Document 71yZ8N6kbnDm5Ern9YOX3oJoe

SC-ELEC-00820 'O (ft 4ik A. I, A. File No. 31-z-672 also No. --------------------------*8?-------------------------- This is the Rockbestos Handbook and Catalog No. 10-E which illustrates and describes wires, cables and flexible cords designed for use where electric wiring, either in conduit or open, is exposed to heat, fire hazard, corrosive fumes, vapors, oil or grease. ' All data subject to change without notice. ROCKBESTOS PRODUCTS CORPORATION Main Office and Works NEW HAVEN 4, CONNECTICUT, U. S. A. District Offices listed on back page ---------------------------------------------------------------- A. 1. A. File No. il-c-6 7 2 also No. Jl-c-679 Catalog No. 10-E March 1 . 1939 RBB 00309 World's largest factory devoted exclusivity to tbr aatrufacturt of ptrmeaently iotufated wires, cobles tod cords. MAIN OFFICE AND WORKS ROCKBESTOS PRODUCTS CORPORATION NEW HAVEN 4, CONNECTICUT, U. S. A. "Rockbestos" is the name of a wide line of wires, cables and cords designed to operate with out failure under severe conditions. In designing the insulation for wires which will be exposed to heat, corrosive fumes, smoke, oil, grease or fire hazard we have found asbestos to be the broad common denominator because this unique material not only remains unchanged under heat and is, therefore, absolutely fireproof but in addition, is inert and therefore unaffected by age. But asbestos is only one ingredient of Rockbestos insulation. Other insulating materials such, for example, as varnished cambric, glass and synthetic resins contribute to the overall performance of a number of Rockbestos wires. Then there is the selection of impregnating compounds -- an entire field by itself. Rodebestos has developed its own time-tested impregnating compounds and finishes with heat, Same and moistureproof characteristics but chemical research in many laboratories is producing dozens of new materials and all these are being tested without prejudice that we may utilize the best characteristics of many materials and produce wire that operates without failure within constantly enlarging limits. Two lines -- A.V.C. and All-Asbestos -- have been standardized and constitute the bulk of the wires shown in this handbook but the explosion-proof AC secondary network cable and the moisture resisting and fireproof non-Ieaded vault cable are examples of the special group of Rockbestos wires where asbestos and other insulating materials or special compounds have been combined to produce a wire which will meet certain rigid specifications. RBB 00310 INDEX BY TABLE LETTER Table Page A AC ACS Rheostat Wire, 600 Volt All-Asbestos.................................. 48 ' Rheostat and Stove Wire, 300 Volt Solid All-Asbestos............................. 47 Rheostat and Stove Wire, 300 Volt Stranded All-Asbestos.....................- 47 B Switchboard Wire, 600 Volt A.V.C................................................. --..... 38 BH Switchboard Hinge Cable, 600 Volt A.V.C.............................................. 40 BS ^Switchboard Cable, 600 Volt, A.V.C........................................................ 39 C CA CAC CV CVC Boiler Room Wire, 600 Volt A.V.C......................... Duplex Flexible Cord, All-Asbestos..................................................... Triplex Flexible Cord, All-Asbestos......................................................... Duplex Flexible Cord, A.V.C Type....................................................... Triplex Flexible Cord, A.V.C Type....................................... 25 55 55 56 56 E Power Cable, 600 Volt A.V.C................................. 26 EC Power Cable, 600 Volt A.V.C., multi-conductor...................................... 27 EL Power Cable, 600 Volt A.V.C, lead sheathed.................. -..................... 28 EM Power Cable, 1000 Volt A.V.C................................................................ 29 F Power Cable, 2000 Volt A.V.C.......................................................... --..... 30 FA Twisted Pair Heat Resisting Flexible Cord............................................... 54 FC Triplex Heat Resisting Flexible Coed.......... .............................. 54 FR Duplex Heat Resisting Flexible Cord........................................................ 54 FR Duplex Heat Resisting Flexible Cord, lacquered......... .......................... 54 FS Fixture Wire, heat resisting......................................................................... 53 G Power Cable, 3000 Volt A.V.C................................. 31 H Power Cable, 5000 Volt A.V.C.................................................................. 32 HD Heater Cord, heavy duty industrial type................................................... 57 L Motor Lead and Apparatus Cable, 600 VoltA.V.C.................................... 33 LH Heating Cable, lead sheathed industrial type............................. 64 MD-MT ML Multi-conductor Control Cable......................................................... Mining Cable, 600 Volt A.V.C................................................... 36-37 34 P Switchboard Bus Cable, 600 Volt A.V.C.................................................... 41 R Rheostat and Power Cable, All-Asbestos................................................... 50 RF Apparatus Cable, All-Asbestos flexible ........................ 51 S Signal Wire ............................................................................................. 58-59 T Headlight Wire.................................................... 59 TC Thermostat Control Wire........................................................................... 61 UL Secondary Network Cable........................................................................... 62 UV Fireproof Vault Cable.................................................................................. 63 VK Elevator Control Cable............................................................................... 35 VT Elevator Lighting Cable...................................................................... 35 W Apparatus Cable, All-Asbestos extra flexible...... .................................... 52 XB XBH XBS Switchboard Wire, 600 Volt, Type SNA.................................................... 44 Switchboard Hinge Cable, 600 Volt, TypeSNA...................................... 46 Switchboard Cable, 600 Volt, Type SNA................................................. 45 YC-YV YS-YA Pyrometer Wire, A.V.C. Type........................................................... .'....... 60 Pyrometer Wire, All-Asbestos.................................................................... 60 RBB 00311 INDEX BY NAME Table Apparatus Cable, All-Asbestos flexible.......................... ...................RF............. Apparatus Cable, All-Asbestos extra flexible................................... W............. Apparatus Cable, A.V.C Type...........................................................L............... Armored Cable..... .................................................................................................. Asbestos, nature of................................................................................................. Boiler Room Wire, 600 Volt A.V.C.............................. ....................C.......... -- Cab Cord, All-Asbestos Duplex................. ....................................... CA ....... .. Cab Cord, All-Asbestos Triplex.........-..............................................CAC........ Cab Cord, A.V.C Type Duplex.........................................................CV ........... Cab Cord, A.V.C Type Triplex.........................................................CVC........ Characteristics of Rockbestos Wire................ ........................................................ Conduit Size Tables.............................................'..................................... ............ Control Cable, Multi-conductor.........................................................MD-MT .. Control Wire, armored......................................................................... TC .......... Control Wire, single conductor........................................................C............... District Offices................................................... .............................. ....................... Elevator Control Cable...................................................... VK .......... Elevator Lighting Cable...................................................................... VT .......... Extension Cord...... ................... ,...CV .......... Fixture Wires, heat resisting............................................................... FS............. Flexible Cords, heat resisting.............................................................FA-FC-FR Flexible Cord, All-Asbestos Duplex ................................. CA .......... Flexible Cord, All-Asbestos Triplex.................................................. CAC......... Flexible Cord, A.V.C. Type Duplex................................................. CV .......... Flexible Cord, A.V.C Type Triplex............ .............................. .......CVC ........ Headlight Wire.....................................................,.................. ...........T............... Heater Cord, heavy duty industrial type........................................... HD........... Heating Cable, lead sheathed industrial type............................... .....LH .......... Hinge Cable, flexible switchboard type............... :........................... BH .......... Index, by Table Letter--by Name............... ..................................................... Jumper Cable, All-Asbestos flexible.................................................. RFi...... . Lead Sheath......................................................................................................... Lighting Wire....................................... ...............................................C......... Mining Cable, 600 Volt A.V.C.........................................................ML ..... Motor Lead and Apparatus Cable.......................................................L......... Power Cable, 600 Volt All-Asbestos...............,................................R....... Power Cable, 600 Volt A.V.C............................................................. E.......... Power Cable, 600 Volt A.V.C. lead sheathed..................................EL......... Power Cable, 600 Volt A.V.C. multi-conductor...............................EC....... Power Cable, 1000 Volt A.V.C........................................................... EM ..... Power Cable, 2000 Volt A.V.C........................................................... F......... Power Cable, 3000 Volt A.V.C........................................................... G.......... Power Cable, 5000 Volt A.V.C........................................................... H ....... . Pyrometer Wire, All-Asbestos ........................................................... YS-YA Pyrometer Wire, A.V.C. Type ........................................................... YC-YV Rheostat and Power Cable, stranded conductor................................. R......... Rheostat and Stove Wire, 300 Volt Solid All-Asbestos..................AC ..... Rheostat and Stove Wire, 300 Volt StrandedAll-Asbestos............. ACS ... Rheostat Wire, solid conductor .........................................................A......... . Secondary Network Cable ........................................................... ......UL ..... Signal Wire, 600 Volt A.V.C..............................................................S........... Specifications for Rockbestos Wires................................................................. Switchboard Bus Cable, asbestos braided.......................................... E......... Switchboard Bus Cable, cotton braided.............................................. P......... Switchboard Cable, cotton braided, stranded conductor.................. BS....... Switchboard Cable, Type SNA...........................................................XBS ... Switchboard Hinge Cable, cotton braided, flexible........................... BH ..... Switchboard Hinge Cable, Type SNA................................................ XBH ... Switchboard Wire, asbestos braided.................................................. C.......... Switchboard Wire, cotton braided.....................................................B :........ Switchboard Wire, Type SNA...........................................................XB ..... Thermostat Control Wire................................................................... TC ..... Uses for Rockbestos Wires................................................................................ Vault Cable, Fireproof....................................................................... UV ..... Page 51 52 33 15 6 25 55 55 56 56 12-13 21-24 36-37 .. 61 .. 25 .. 65 .. 35 .. 35 .. 56 - 53 .. 54 .. 55 .. 55 .. 56 .. 56 .. 59 - 57 .. 64 .. 40 14-20 4-5 51 .. 15 .. 25 .. 34 .. 33 .. 50 .. 26 .. 28 .. 27 - 29 .. 30 .. 31 . 32 .. 60 .. 60 .. 50 .. 47 .. 47 .. 48 .. 62 58-59 15-20 .. 26 .. 41 .. 39 .. 45 .. do .. 46 - 25 .. 38 .. 44 .. 61 7-11 .. 63 RBB 00312 ASBESTOS * . older than the Centuries There's real romance in drawing on the Earth for the asbestos insulation of Rockbestos wires, cables and cords- That unique, non-metallic mineral--a natural formation in the earth--is practic ally as old as Earth itself, formed at the time when glowing clouds hung low over the new planet, when warm, seething,-steamy seas, mud oceans and molten lava ebbed and flowed over the restless surface of our globe during the turmoil of creation . . , when Earth's crust was slowly cooling, hardening; when mountains were being upthrust by subterraneous upheavals and when terrific pressures were combining water, silica and magnesia into rock-like strata which later came to be known as .. . Asbestos. This is what science believes to be the explanation for the wide occurrence of asbestos over the Earth's surface. At any rate, all agree that Asbestos is millions of years old in its present form -- that it has not changed in the memory of Man and that its present form is probably the form it first took back in the dawn of Earth's birth. Hard as a rock in the vein, asbestos is soft as silk when fiberized. Each silky fiber is a crystal 1 /500,000th of an inch in diameter. A million-year-old handful! This asbestos has been completely fiberized and prepared and is now ready to be carded into roving. Asbestos is found on' every continent--generally in commercial quantities. Asbestos deposits vary greatly, however, and not all of it, by any means, is suitable for use as electrical insulation of wires. Some of these deposits are relatively pure, i. e., free from iron content, while others have a high iron content so that the asbestos from these latter, unless cleaned in some way in an attempt to remove the iron particles and other impurities, is useful only for such mechanical asbestos products as shingles, fireproof board and so on. For years we have investigated the world sources of asbestos to find and secure the softest, silkiest, purest, long fibred asbestos--and we find it in certain deposits of Chrysotile (Serpentine Group)--the aristocrat of the asbestos family. This asbestos is mined, broken up, fiberized, subjected to special refining processes and then combed and carded into soft, fluffy roving. In this foam it is applied to the conductor, impregnated with neutral insulating compounds, and compressed into the felted wall which is Rockbestos insula tion -- a protective covering that is not only fireproof but practically impervious to the destruction normally caused by heat, oii, grease, corrosive fumes or age. What a material to use where endur ance and resistance to deterioration are important! RBB 00313 ROCKBESTOS USES for ROCKBESTOS WIRES RHEOSTAT WIRING For connections between grids and from grids to faceplates use Table A and R rheostat wire and cable, pages 48 and $0. These All-Asbestos insulated wires will not deteriorate under constant high temperatures. The very nature of the All-Asbestos insulation prevents its ever growing hard and brittle and cracking as happens with rubber insulation, for example, under heat. Its initial mechanical and electtical characteristics are permanently retained. LIGHTING AND CONTROL CIRCUITS IN CONDUIT Use A.V.C. Boiler Room Wire, Table C, page 25, for solid conductor. For stranded conductor use A.V.C. Power Cable, Table E, page 26, or A.V.C. Control Cable page 36. It experience shows severe condensation allowing water pockets to form and continue fot long periods, use Lead Sheathed A.V.C. Power Cable, Table EL, page 28. This wire will stand up under conditions ranging from complete and continuous submersion to high and dry temperatures. POWER CIRCUITS UP TO 5000 VOLT SERVICE Many times important circuits are located wrhete severe conditions pre vail. Rockbestos A.V.C. Power Cable is designed to stand up without failure under conditions of heat and moisture, corrosive fumes, oil, grease or fire hazard. For applications where cable may be `Submerged in water specify lead sheathing. 600 Volt A.V.C. Power Cable, Table E, is described on page 26. For service voltages above 600 use Table EM, F, G or H cable shown on pages 29, 30, 31 and 32. 7 CONDUIT WIRING AROUND FURNACES, OVENS, SOAKING PITS, LEHRS, TENTER FRAMES, ETC. Use Rockbestos A.V.C. Boiler Room Wire, Table C, or Rockbestos A.V.C. Power Cable, Table E, pages 25 and 26. For service voltages above 600, use Rockbestos A.V.C. Power Cable, Tables EM, F, G ot H shown on pages 29, 30, 31 and 32. RBB 00314 8 ROCKBESTOS SUBWAY CAR AND LOCOMOTIVE WIRING The combination of heat and vibration to which the wiring of subway cats, electrified railway locomotives, electric mine locomotives and steam locomotives is almost constantly subjected, is ruinous to ordinary wire insulation. Rodcbestos A.V.C. Motor Lead and Ap paratus Cable, and A.V.C Mining Cable, designed to meet builders' requirements for heatproof and fireproof cable for railway and mine locomotives, finds several applications in electric cars and locomotives for shoe leads, trolley leads, transformer and motor leads. It remains permanently flexible due to the non-deteriorat ing characteristics of the insulation and its flame, heat and moisture resisting qualities are equally permanent. See pages 33 and 34. Rodcbestos Flexible Coed and Headlight Wire is used by many railroads for cab light ing and gauge lighting as well as fot drcuits to head lights and dassifieation lights. Sec pages 33, 36 and 39. MOTOR LEADS, WINDINGS AND COIL CONNECTIONS Rodcbestos A.V.C Motor Lead and Apparatus Cable -- heat resisting, fireproof and permanently flexible -- is ideal for leads and coil connections. It is widely used by steel mills, on electrified rail roads and on elevated and subway railways. An important point is that it remains permanently flexible because its in sulation does not grow hard or brittle with heat or age. See page 33 Another important point is that A.V.C Cable cannot burn. When A.V.C Cable comes in contact with a hot fire there is a small amount of black smoke given off for a minute or so and after that the cable simply glows red hot. There are no dense douds of smoke at any time -- no choking fumes -- because A.V.C. insulation simply will not burn. The hazard of burning insulation is thereby completely eliminated when a locomotive or car is wired with Rockbestos A.V.C. Motor Lead and Apparatus Cable. We have made spedal studies of motor lead applications on rolling stock from the point of view of determining the maximum flexibility of conductor. As a result of this experience we are in a position to help railroad and railway engineers write a specification for a motor lead cable which will have the maximum flexibility and at the same time possess fireproof and moisture resisting qualities. Windings: The use of heat resisting magnet wire, replating cotton, is on the increase. While it is somewhat higher in price than the more usual types, it is actually less expensive to use if severe operating conditions burn out windings made of ordinary wire. A motor wound with Rodcbestos Magnet Wire and equipped with Rodcbestos A.V.C Cable for leads and coil connections, is just about as failureproof, electrically, as a motor can possibly be. Magnet wire is an item of such im portance that we publish a separate bulletin on it. SWITCHBOARDS AND PANEL BOARDS Rodcbestos originated and patented the first switchboard wire with the A.V.C. insulation. This is a genuinely fireproof wire but besides that witemen like it because it does not crack when sharp bends are made when wiring boards. That is because the felted asbestos wall on top of the varnished cambric (see cut, page 38) acts as a cushion, instead of being stiff and unyielding; result, a smooth, square bend. For jumper connections to hinged panels use Rodcbestos Hinge Cable, page 40, which is similar in appearance, size and electrical characteristics to the Table B Switchboard Wire. Like Rodcbestos Hinge Cable, our A.V.C. Switchboard Bus Cable matches Rodcbestos Switchboard Wire in appearance and characteristics. See page 41. The use of this family of switchboard wires insures a matching appear ance without painting and makes possible a real fireproof wiring job. n RBB 00315 ROCKBESTOS 11 SPECIAL EQUIPMENT Motion picture projectors ire typical of certain classes of apparatus in which wire is exposed to extremely high tem peratures as well as a high degree of fire hazard, Tempera tures of 400F. are not uncommon and the wire used in these installations must possess and maintain absolute incombustibility. In addition a high degree of flexibility is frequently required. The Rockbestos Extra Flexible All Asbestos Apparatus Cable shown on page 52 meets all of these requirements -- it cannot grow hard or brittle under the attack of heat, remains pemanently flexible and positively will not bum. RAILROAD SIGNAL TOWERS AND SWITCHBOARDS Signal towers are the nerve centers of railroads and their smooth and uninterrupted operation is a vital necessity. Many towers contain hundreds of thousands of feet of wire concentrated in a comparatively small space. Wherever wires arc massed or banked together, as they are in signal towers and on the backs of switchboards, a fire hazard exists and it is becoming more and more common for signal engineers to insist upon a genuine fireproof wire for this use regardless of accepted standards of application. Rock bestos A.V.C. Signal Wire described on page 58 is both heatproof and fireproof. SECONDARY NETWORK CABLE The modern method of distributing power in densely populated communities is by means of a low voltage A.C. secondary network distribution system. Power is distributed at the using voltage, currents are heavy and the load is fed from several sources. The successful operation of a system of this kind requires that when cable faults occur they shall clear themselves cleanly and quickly with a minimum of burning and the cable shall not produce smoke, or explosive, inflammable or toxic gases. Rockbestos A. C. Secondary Network Cable was developed as a single .purpose cable for this applica tion. It cannot burn, cannot pro duce smoke or inflammable or toxic gases, dears cleanly and quickly under fault conditions. The unre touched illustrations show what oc curs under fault conditions. The lead sheath has partially melted off the two top cables and the one in the lower foreground reveals an un burned tube of insulation which was left when the copper melted out. The illustration below shows the fault point of a cable from which the cop per melted and ran out, leaving several inches of hollow insulation. See page 62. RBB 00316 12 R O CKBESTOS GENERAL CHARACTERISTICS and ANSWERS TO COMMON QUESTIONS WHERE SHOULD ROCKBESTOS WIRES BE USED? Wherever electric wiring is exposed to heat, heat and moisture, fumes, vapors, oil, grease or fire hazard. Throughout industry there are places where wiring is unavoidably exposed to some of these conditions. . In power stations and industrial plants interruptions to service frequently occur because wire insulation fails due to heat, fumes, vibration or age or a combination of these conditions. The use of Rockbestos wires reduces to a minimum failures from these causes because Rockiestos insulation, being inorganic, is highly resistant to these deteriorating conditions. It is especially important to note that Rockbestos insulation does not dry out with age nor grow hard or brittle, consequently Rockbestos wire can be installed on a truly permanent basis. IS ROCKBESTOS JUST ANOTHER NAME FOR "SLOW-BURNING" WIRE? Not at all. Slow-burning wire -- sometimes referred to in error as "that hard, white asbestos wire" -- contains no asbestos whatever. Slow-burning wire is made by applying two or three cotton braids to a wire and finishing each braid with flameproof paint. The flameproof paint finally dries up, crumbles and separates from the braid because the braid was not impregnated but simply painted with it. The basis of Rockbestos insulation, on the other hand, is the felted wall of asbestos. This felted wall is formed as a continuous impregnated insulating sheath -- uniform in thickness, firm, dense, highly compressed yet flexible and without laps, joints or seams. The ability of asbestos to withstand heat is unquestioned, so the felted wall is not merely a flameproof but a teal heat resisting insulation. Even when subjected to- continuous high temperature there is practically no deterioration -- it does not grow hard or brittle -- does not crack. These non-deteriorating characteristics make Rockbestos unique among wire insulations. The insulating compounds with which the felted wall is impregnated are chemically neutral and were especially developed for asbestos insulation. They are ah integral part of the felted wall-- not painted on afterward -- and, like asbestos, they retain their characteristics indefinitely. The felted wall of asbestos is permanently flexible. Rockbestos A.V.C. insulation is the felted wall of asbestos as just described, reinforced with an embedded high dielectric insert. The characteristics of our insulations are such that the impregnating compounds will not drip from the wire at any temperature. At extremely high temperatures -- 400 to 600 degrees F. for example -- our impregnating compounds begin to vaporize and at the melting point of copper -- 1083 degrees C. -- they will have entirely disappeared, along with the water of crystallization of the asbestos, leaving a perfectly dry tube of insulation which usually covers the conductor but lacks mechanical strength. Exception: Rockbestos A. C. Secondary Network Cable, see page 62. Slow-burning wire has low moisture resistance, yet a good deal of it has been put into conduit in hot places under the mistaken impression that it was Rockbestos. Naturally when condensation occurred, as it almost always does in conduit at some time or other, the moisture found its way through the cotton braided coverings, causing grounds and short circuits. Rockbestos A.V.C. insulated wire and cable on the other hand is distinctly suitable and recom mended for conduit installations. It will successfully resist heat, moisture, fumes, oil and grease and it positively will not burn or transmit flame under any conditions. IS THERE ANY RUBBER IN ROCKBESTOS INSULATION? No. There is, however, a similarity of appearance between a felted wall of asbestos impreg nated with black insulating compound and a rubber belt insulation. Close inspection of the former, however, reveals its fibrous nature. Except in wires and cords for special applications, such as heater cord and some railway wires in which rubber is adequately heat protected with asbestos, we use no rubber whatever in Rockbestos wires. That is because rubber has distinct temperature limitations and is unsuitable for use where a fire hazard exists. o RBB 00317 j ! ' ----- ROCKBESTOS ... HEATING CABLE This cable is ideal for many applications where a mild heat must be distributed even ly over a fairly large area, and can often be used to better advantage than spot, space or strip- heaters. Rockbestos Industrial Heating Cable, origin ally developed`as a heat source for the forc ing of early spring plants in hotbeds and propagating benches, has been used by a number of our customers for the economical reduction of heat-loss. They found that by winding it around pipes, liquids could be kept flowing at points where they congealed. Soap, paint, varnish, chocolate, molasses, ink and sulphur are easily kept at the right con sistency to prevent dogging of conveyor pipes. A steel mill uses it on toll-necks to prevent lubricants from congealing. A power company used a quantity of Rockbestos Heating--Cable in a set of specially designed trash racks in one of its hydro-electric power stations to prevent needle-ice from sticking to the bars. In a most unique installation, the heating cable was embedded in a section of cement side walk for the purpose of keeping it free of snow and ice. Some plants use Rockbestos Heating Cable to prevent wet pipe sprinkler systems, waste pipes and water lines in unheated areas from freezing. Gutters and down spouts can also be kept free and dear of ice with it. See page 64. EXTENSION CORD For general extension work where cord is dragged over floors, sharp corners, stones, gratings, etc. nothing excels a good rubber jacketed cord. However, in some places where other conditions, such as heat, oil or grease, deteriorate the cord and cause failure, we recommend Rockbestos A.V.C. Flexible Cord shown on page 56. For use in dry locations such as on cord pendants, the All-Asbestos Flexible Cord on page 55 will be satisfactory. HEATING APPLIANCES For years we have furnished fine heater cord to many of the country's largest manufacturers of domestic heating appliances. We have also furnished heater cord for many industrial heating appliances such as soldering irons, glue pots, hot plates, heavy flatirons, branding irons, as illustrated, and many special heating forms used in the shoe industry. The cords on these appliances are subject to a good deal more than ordinary wear so that when we recom mend Rockbestos Heavy Duty Heater Cord for these uses, we do so knowing that its use will cut down replacements and cord expense. See page 57. RBB 00318 10 ROCKBESTOS LIGHTING FIXTURES Modern fixture design has produced gas filled high wattage units, indirect lighting and flush type fixtures in which the wire enter ing the socket is exposed to temperatures ranging between 50 and 200C. The resulting induced beat creates high conductor temperatures from 3" to 12" back from the socket which dry out and crack ordinary insulation. Under such conditions uninter rupted service can be assured only by wiring with a genuinely -heatproof wire. For office and domestic fixtures Rodcbestos single conductor heat resisting fixture wire is. recommended. See detailed information on page 53. For cord pendant fixtures the permanently insulated heat resisting Rodcbestos Flexible Cords described on p2ge 54 will be found useful. Power company and industrial plant electricians have installed millions of feet of Rodcbestos A.V.C Boiler Room Wire in the lighting dreuits of boiler rooms, engine rooms, kiln rooms, steel nulls and other hot places where it is giving trouble-free service. Many electridans run this same wire right into the lighting fixtures, which gives them heatproof wiring from the distribution panel to the socket terminals. Although Rodcbestos Boiler Room Wire is a little larger than the wire ordinarily used, industrial fixtures usually have enough dearance to accommodate it. See page 25. NOTE:--Allied to lighting fixtures is the problem of providing the higher currents required by the increase, during the last few years, of the average wattage of lighting fixtures and the increase in the number of fixtures. Frequently the size of the conduit originally installed will not permit an increase in the size of the feeders. A solution in a number of cases has been to replace the old feeders, usually rubber-covered wire, with A.V.C. wires which have a higher carrying capadty rating and can be operated under higher conductor temperatures. Our engineering department will gladly make recommendations. PYROMETER LEADS Wherever pyrometers are installed there are high temperatures to which the wiring is usually exposed. Rodcbestos insulated pyrometer wires, with their de sirable heat resisting and fireproof characteristics, are being increasingly used throughout industry for py rometer leads and fire-ends. See page 60. INTERCOMMUNICATING, SIGNAL AND TEMPERATURE CONTROL CIRCUITS Rodcbestos Thermostat Control Wire has the perma nent heat resisting and fireproof characteristics of out other wires and cables. It fills a demand for a small armored signal and control able for use in steel mills and industrial plants where permanent installations are essential. See page 61. RBB 00319 13 - ROCKBESTOS ---------- HOW MANY TYPES OF ROCKBESTOS INSULATION? There are two standard types -- ' (a) Rockbestos A.V.C insulation, a construction originated, developed and patented by Rockbcstos (U. S. Pat. No. 1,840,282 -- 1,861,404) consisting of a felted and impregnated -wall of asbestos with an insert of high dielectric material embedded is it. (b) Rodcbestos All-Asbestos insulated wires on which the covering consists of a felted and impregnated wall of asbestos. Both types are usually finished with braided coverings of asbestos or cotton yarn. IS ROCKBESTOS SUITABLE FOR CONDUIT INSTALLATIONS? Yes.- Rodcbestos A.V.C wire is designed for conduit installation. See detailed recommendation beginning on page 14. Rodcbestos A.V.C. wire is impregnated to successfully meet moisture conditions in conduit such as are caused by condensation. While it is not a submarine type of wire it has ample margin of safety for all ordinary conduit moisture. In locations where it is known that wire will be sub merged for long periods we recommend lead sheathed A.V.C. constructions. ARE ROCKBESTOS WIRES BIGGER THAN OTHER TYPES? In the larger sizes Rodcbestos cables ran slightly smaller in diameter than other types. In all but a few cases involving the smaller size wires, the same size of conduit which will accommo date a given number of other types of wires, will also take a like number of Rodcbestos A.V.C. wires oc cables. Foe spedfic conditions see conduit size tables for Rodcbestos Boiler Room Wire and Power Cables on pages 21 to 24- WHAT ARE THE CARRYING CAPACITIES OF ROCKBESTOS WIRES? Rodcbestos wires and cables have greater carrying capacity than other types of insulated wires because of the well known heat-resisting characteristics of asbestos which is the basis of Rodcbestos insulation. Specifically, a given size of Rodcbestos insulated conductor will carry a highet current than other types of insulated wires. Conversely, where a given current is to be Carried a smaller size Rodcbestos wire can be safely used than would be required with wire having other types of insulation. See Table of Allowable Current Carrying Capacities on reverse side of Rodcbestos Calcula tor in the back of this catalog. WHAT IS THE VOLTAGE RANGE OF ROCKBESTOS WIRES? Rockbestos wires and cables can be supplied for rated voltages up to 5000. WHAT IS THE SIZE RANGE OF ROCKBESTOS WIRES AND CABLES? The Rodcbestos line indudes virious single conductor constructions ranging up to 2,500,000 CM. in size. Multiple conductor cables can be manufactured up to a diameter of approximately 2Vj inches. ARE ROCKBESTOS WIRES APPROVED BY THE UNDERWRITERS? Yes. All types of wire shown in this bulletin, which come within the jurisdiction of the Under' writers' Laboratories are approved. CAN LEAD AND ARMOR COVERINGS BE SUPPLIED? Any Rodcbestos wire can be sc supplied. Specify lengths desired, otherwise prices will be figured on standard shipping lengths. Lead Sheathed 600 Volt A.V.C. Power Cable is illustrated on page 28, specification information on other types on request. STANDARD SPECIFICATIONS FOR ROCKBESTOS WIRES See page 15 under "How to Select or Specify the Proper Rockbestos wire." RBB 00320 14 ROCKBESTOS HOW TO SELECT OR SPECIFY THE PROPER ROCKBESTOS WIRE GENERAL There are two standard typ?s -of Rodcbestos wires which are specifically recommended to fulfill the usual service conditions of conduit and open wiring: 1. A.V.C insulated Wires, Cables and Cords. 2. All-Asbestos Insulated Wires, Otbles and Cords. In addition to these there are special types which have been developed to meet unusual condi tions in which some particular characteristic must be emphasized. These involve the use of other materials such as rubber, synthetic resins, glass, etc, in combination with asbestos. FOR CONDUIT INSTALLATION For all conduit wiring we recommend the A.V.C group of wires, cables and cords. These have been designed especially for conduit installation and wherever there is a possibility of moisture collecting around the wire. A.V.C insulation has much higher dielectric strength than an equivalent thickness of felted asbestos alone, consequently possesses the necessary extra margin of dielectric strength to stand up without failure under moisture. We have service records on many millions of feet of Rockbestos A.V.C. wires and cables, in both single and multiple conductor form, installed in the conduits of power companies, steel mills, industrial plants, kiln rooms, electrified mining equipment, oil refin eries, marine boiler rooms and continuous ovens and successfully meeting conditions of heat, fumes, oil, grease and fire hazard. FOR OPEN WIRING In dry places we recommend the All-Asbestos wire. It is ideal to use on rheostats -- con nections between grids and from grids to faceplates--for exposed lighting and control circuits, etc. For locations where open wiring will be exposed to high humidity, steam, etc., use same recom mendations as given above for conduit wiring. IMPREGNATION AND BRAIDS In general the felted asbestos insulating walls of ali Rodcbestos wires, cables and cords are impregnated with a chemically neutral, black insulating compound which is heat, moisture and flame resisting. Wherever identifying colors are required on wires having no outer braid the insulation can be furnished in white, black or plain colors. Braids, whether they be asbestos or cotton, are also generally finished black, but white or colored finishes can be supplied on special order. In special cases where a wire will be exposed only to extremely high temperatures and no moisture and where maximum flexibility is desired, white compound may be used both in the im pregnation of the felted asbestos walls and for the finish of the braid. A felted wall so impregnated is slightly mote flexible than when impregnated with moisture resisting compound. Extra Flexible Apparatus Cable illustrated on page 52 provides an example of this construction. If wires are to be exposed to oil or grease it should be mentioned in the specifications to insure the use of the proper compounds in impregnating the insulation. o RBB 00321 ROCKBESTOS SPECIAL BRAIDS AND FINISHES On zny of the standard wires shown in this catalog special cotton twine, linen or jute braids can be substituted if necessary. Also a variety of special finishes such as lacquer, wax, asphalt or aluminum paint, can be applied to any selected braid. SPECIAL CONDUCTORS The following pages show our standard conductors for the various types of wires. On special order we can supply other types of conductors as to material, stranding, tinning, plating, etc. Alloy conductors for pyrometer wire must be supplied by the customer. LEAD AND ARMOR COVERINGS Any wire of our manufacture can be furnished with lead sheath, basket weave metal armor, interlocking steel or bronze armor or almost any type of special covering. Give complete specifica tions and state cutting lengths on order. SPECIAL CONSTRUCTIONS We fabricate special insulations to meet unusual conditions. If your requirements do not seem to be met by any of the types of wire described in the following pages, we will be glad to work out a construction to meet your particular conditions. STANDARD SPECIFICATIONS FOR ROCKBESTOS A.V.C. AND ALL-ASBESTOS WIRES AND CABLES Many companies in adopting Rockbestos insulated wires and cables have requested suggestions for a standard specification. We present the following specification outline which covers all standard types of Rockbestos wires and cables and offer it for your use. NOTE: This specification summarizes the National Electrical Manufacturers Association Standard for Asbestos and Asbestos--Varnished Cambric Insulated Wires and Cables with which all Rockbestos wires and cables of standard construction comply. Copies of the NEMA Standard may be obtained by writing to National Electrical Manufacturers Association, 155 East 44th Street, New York City. I General (a) Purpose: The purpose of these specifications is to insure the furnishing of wire and cable of the best quality, manufactured in accordance with best accepted prac tice. (b) Scope: These specifications cover the manufacturing and test requirements for all asbestos and asbestos--varnished cambric insulated wires and cables. (c) Materials and Workmanship: All materials and workmanship involved in manufac turing wires and cables covered by these specifications shall be of high quality, care fully selected to insure a finished product best suited for the purposes intended. (d) Applications A.V.C. Insulations. Suitable for use af voltages up to 600,1000,2000, 3000 and 5000, open or in con duit, in locations where wiring is exposed to heat and moisture. The high-dielec tric varnished cambric insert, adequately heat-sealed by the felted asbestos, pro vides ample protection against casual moisture. Where complete submersion is encountered specify lead sheathed cables. 15 RBB 00322 16 ROCKBESTOS Standard Specifications --- Continued All-Asbestos Insulations. Suitable for use at voltages up to 300 or 600, as specified, for exposed wiring in high temperature locations where little or no moisture is encountered. Impreg nated with either flame and heat resisting, or flame, heat and moisture resisting compounds. Specify preference. II Conductors (a) Conductors shall be of tinned or plain copper in accordance with ASTM Specifica tions B33-39 or B3-41 respectively, or latest revision thereof, (b) Stranded conductors shall be concentric or rope lay as required. 1. The make-up of stranded or flexible conductors shall conform to accepted stand ards wherever practicable. (c) Conductors other than copper shall be specified to meet individual requirements. (d) Standard enameled copper shall meet the requirements of ASA Spec. C8.7--1936 insofar as it applies. III Insulation (a) Asbestos 1. Material. The asbestos insulation shall consist of best quality, long fibre, chrysotile asbestos commercially free from foreign particles of dirt, cotton seed and metallic oxides. It shall be well carded to prevent lumps and irregularities in the finished cable. The asbestos insulation after extraction of the impregnating compound shall con tain not less than 80% by weight of asbestos. The total iron content shall not exceed 4% by weight of the asbestos and the magnetic iron content shall not ex ceed 2% by weight of the asbestos. The wall of felted asbestos insulation shall be applied to form a smooth wall of uniform thickness as specified in the tables, with the conductor well centered. 2, Impregnation. After the asbestos has been applied to the conductor it shall be thoroughly dried and completely saturated with flame-resisting and heatresisting or moisture resisting compound as specified, then compressed and polished to form a dense, uniform felted asbestos wall of the specified thickness. The impregnating compound shall consist of suitable high grade ingredients and shall retain its initial qualities during the normal life of the cable. The compound shall develop no injurious chemical reaction within itself or with any component parts of the cable. RBB 00323 =---- ROCKBESTOS Standard Specifications -- Continued (b) Varnished Cambric 1. Material. The varnished cambric insulation, where used in these wires and cables, shall consist of a high grade varnished doth substantially free from blisters or other imperfections. It shall comply with the requirements for varnished cloth in existing NEMA Standards for Varnished Cambric Insulated Cables, ex cept that test requirements on tape removed from the finished cable shall be <50% of the values on unused tape. 2, Application. The varnished cambric insulation shall be applied with lubricating compound between layers and to the wall thickness spedfied. 17 IV Braids (a) Asbestos 1. Material. The asbestos from which the yam is made shall be of good quality long-fibre chrysotile asbestos which meets the requirements of ASTM specifica tion D-375-42 Underwriters* Grade, containing not less than 80% by weight of as bestos. The total iron content shall not exceed 6% by weight of the asbestos. The magnetic iron content shall not exceed 2% by weight of the asbestos 2. Application. Asbestos yarn of the proper number of ends to insure a uniform tig smooth covering of the thickness specified, shall be closely woven into an asbestos outer braid. 3. Saturation. Asbestos outer braid shall be saturated with either a suitable flame and heat resisting, or flame, heat and moisture resisting compound as specified (b) Cotton Cotton braids shall be closely woven of the proper number of ends of thread to insure a uniform smooth covering, and shall comply with the Standard Braid re quirements of ASA Specification for Cotton Braid for Insulated Wires and Cables, C8.12-1935 or the latest revision thereof. Outside cotton braids shall be finished with either a suitable flame and heat resisting compound, or saturated and finished with a flame, heat and moisture resisting compound as specified. V Finishes (a) Classification. The outer covering of wires and cables under this specification, whether plain felted asbestos or braid covered, shall be finished to show a smooth even surface of uniform color as specified and shall enable the finished wire to meet the test requirements specified in the following paragraphs 1 and 2. The following classification indicates the type of finish required for different classes of wire. RBB 00324 IS ROCKBESTOS Standard Specifications -- Continued 1, Flame and Heat Resisting, This finish shall be standard for white or colored braided All-Asbestos insulated wires. It shall consist of suitable compounds to produce a smooth tough outer finish. It shall not be specified on wires sub jected to moisture conditions. 2. Flame, Heat and Moisture Resisting, This finish shall be standard for black, white and colored A.V.C. wires and for black All-Asbestos braided wires and cables. It shall consist of saturating the insulation or braid with black, white or colored flame, heat and moisture resisting compound. VI Special Coverings (a) Special coverings such as spiral, basket weave and interlocking armor for unusual applications shall be so specified on the order with applicable specifications. Cut ting lengths should also be stated. (b) Lead Sheath. The lead sheath shall consist of commercially pure lead (unless an alloyed sheath is specified) and shall be tightly formed around the core. It shall comply in all respects with the requirements for lead sheath appearing in exist ing NEMA Standards for Varnished Cambric Cables. The thickness shall be in conformity with that required for varnished cambric cables of corresponding core diameter. VII Cabling (a) For cables consisting of more than one conductor (except flat twin cables) the separately insulated conductors shall be concentrically cabled together. The lay of the conductors in each layer shall not exceed 16 times the diameter over that particular layer. The lay of the conductors in each successive layer shall be reversed and the outer layer shall have a left hand lay. (b) The single conductors shall have A.V.C. or All-Asbestos insulation as indicated on the order. For circuit identification the insulation of the individual conductors shall be impregnated with colored compounds or covered with cotton or rayon marker braids coded to the NEMA color chart. (c) When required, fillers shall be used and shall be of jute or asbestos, dry or impreg nated with a moisture resisting compound as specified on the order. (d) In Cables with coded conductors and elsewhere when required for manufacturing reasons, the cabled conductors shall be wrapped with tape. VIII Tests A. Physical 1. Materials. The various materials used in the manufacture of wires and cables under this specification, shall meet the requirements listed in the individual sections. n RBB 00325 ROCKBESTOS Standard Specifications -- Continued 2. Finished Product (a) Dimensions. Inspection for dimensional requirements shall consist of four measurements, two to be made near each end of the sample of which the average shall comply with the requirements given in the tables. The measurements of cable in diameter and smaller shall be made with a ratchet micrometer having 14" diameter faces. For cable larger than %" in diameter the measurement shall be made with a circumference tape. Diameter determinations when made with the micrometer shall be the average of two measurements made at right angles to each other. The average diameter over any component layer of the insulation and braid shall not vary more than plus or minus 5 percent from the theoretical dia meter over that layer based on the nominal wall thicknesses shown in the table. (b) Resistance to Flame. All of these wires and cables shall have such fire resisting properties that the test specimens will not convey Same, nor con tinue to burn for more than one minute after five fifteen second applica tions of a standard test flame, the period between applications of the flame being fifteen seconds. NOTE: Compliance of the wire with the requirements of the preceding paragraph shall be determined with the apparatus and according to the methods described in paragraphs c and d. (c) Apparatus for Testing Flame-Retarding Properties. The apparatus for this test consists of a test chamber of sheet metal 12" wide, 14" deep and 24" high, open at top and front and provided with means for supporting the test sample in a vertical position. A Tirrill burner having a bore of and a length of 4" above the primary air inlets, a 20 angle block for supporting the burner, a supply of ordinary illuminating gas at normal pressure, a watch or clock with a hand which makes one complete revolu tion each minute and flame indicators consisting of strips of gummed Kraft paper 5 mils in nominal thickness and l/j" in width. (d) Method of Testing Flame-Retarding Properties. The test is made in a room from which all drafts are excluded. An 18" sample of wire is sup ported from the upper end in the test chamber and is held in vertical position by a four pound weight attached to the lower end of the wire. A paper indicator is applied to the sample so that the lower edge is 10" above the point to which the flame is to be applied. The indicator is wrapped once around the sample with the gummed side toward the con ductor and the ends pasted evenly together and projecting %" away from the wire, on the opposite side of the wire to that to which the flame is to be applied. 19 RBB 00326 20 ROCKBESTOS Standard Specifications -- Continued The height of the flame with the burner vertical is adjusted to 5" with an inner blue cone 1I/2" high. The burner is then tilted to an angle of 20c from vertical and the flame applied to the sample so that the tip of the inner blue cone touches the sample at a point approximately 3" above its lower end. The side of the flame is brought up to the sample in such a manner that the vertical plane through the axis of the burner is perpen dicular to the line of approach. The flame is applied for 15 seconds and then removed for 15 seconds. This process is repeated four times. If more than 25% of the extended portion of the indicator is burned, the wire is considered to have conveyed flame. B. Electrical 1. Initial Dielectric Strength Tests (a) All wires and cables specified herein and rated at 600 volts or more: Test voltages as specified in the tables. Test to be made on 5 ft. lengths of finished cable with the center 3 ft. section wrapped in metal foil, voltage to be applied five minutes. (b) 300 volt rated wires and cables: One thousand volts applied for one minute. Test to be made on 5 ft. lengths of finished cable with the center 5 ft. section wrapped in metal foil. 2. Dielectric Strength After Flame Tests. <*) Samples of cables having been previously subjected to the Flame Test shall be prepared with the charred area of sizes No. 6 and larger wrapped in metal foil, and sizes smaller than No. 6 buried in iron filings or fine shot and tested for one minute as follows: (1) Asbestos -- varnished cambric insulated wires and cables rated at 600 volts or more, 11/2 times rated voltage. (2) All-Asbestos insulated wires and cables rated at 600 volts, 21/2 times the rated voltage. (3) 300 volt rated wires and cables, 1000 volts. 3. Dielectric Strength While Immersed. A 5 ft. sample of finished cable having flame, heat and moisture resisting finish shall be immersed, except ends, for one hour in tap water at room temperature and while still immersed, shall withstand a dielectric test of twice the rated voltage between conductor and water for one minute. IX Sampling (a) Each of the required tests shall be made on one sample of each size and type of wire from each lot of 10,000 feet or fraction thereof, unless other wise specified. (b) If a sample fails to meet any of the prescribed requirements, two addi tional samples shall be taken from the same length. If either of these samples fail the length may be rejected. (c) If any of the lengths fail to meet any of the requirements, samples shall be taken from each length or reel of the lot and tested for this particular requirement to determine acceptance of each reel. RBB 00327 ROCKBESTOS 21 CONDUIT SIZE TABLES TABLE C 600 VOLT A.V.C BOILER ROOM WIRE Sice 0. D-* in Inchon i 2 NUMBER OF WIRES 3 4 ....1 * 6. 7 A.W.G. MINIMUM SIZE OF CONDUIT 16 .220 m M k Vi 1 1 16 .US M M Yt 1 11 14 .245 M M Vi Yt 1 l 1 12 .265 Vi Yt Yt 1 1*4 Wa 10 t .215 Vi Yt 1 J10 Vi Vi 1 1 IV* 1M 1*4 1% IW 6 JSJ V* 1 4 m im I Yt IW $ .405 Yt 1 IM IV* 1*4 1*4 2 " 4 .425 a 1 IVi 1 Vi. 1*4 2 2 S .450 >/. 1 IM i M i*4 2 2 2 1 0 00 000 0000 .400 Vi IM IVi IVi 2 2 2 J10 Vi IVi IM 2 2 2 IM .565 Vi IM IW 2 2 2V 2*4 .605 1 1% IM 2 im 2*4 3 .<50 1 IM 2 2 2W 3 3 .700 1 1W 2 !M 3 53 * Subject to plot of miaua $% tolerance due to variation* in manufacturing procesiea. 8 1 Wa Wa Wa Wa Wa 2 2 2 2 2V9 IM 3 3 3 3U 9 1 1*4 1*4 1*4 Wa m 2 2 2 2 V> 2*4 3 3 3 3*4 3 V TABLE E 600 VOLT A.V.C. POWER CABLE Size O. D.* in Inche* i 2 NUMBER OF WIRES 63 4 | 5 7 MINIMUM SIZE OF CONDUIT A.W.C. 13 16 14 12 to t 6 5 4 3 2 1 0 00 000 0000 .255 *4 M Yt Ya 1 1 IVi ,270 Yt Yt Vi 1 1 1 W* .215 *4 ?) *s 1 1 IVi IVi .305 *4 V< M 1 IVi IVi 1*4 430 M i 460 M 1 1 1 1 IVi IVi Hi IVi IVi IVi 154 495 a 1 1 IVi IVi IV* 2 .420 Yk IVi IM IVi IVi 2 2 .445 V. 1*4 IVi IV. IV* 2 2 .470 Vi IM IVi IVi 2 2 2 405 Yt IM 1W ivi 2 2 2 Vi .US V4 IM IM 2 2Vi 2Vi 2 VS .625 1 Wt 2 2 2Vt 2Vi 3 .670 1 22 2VS 2 Vi 3 3 .720 1 2 2 2Vi 3 3 3 .710 Wa 22 2V 3 3 3*4 250,000C.M. ,6>5 Iw 2M IM 3 3 VS 3 Vi 4 300.000 .940 Wa IM 3 3 IM 4 4 3S0.000 .995 m 3 3 3 Vi 3 Vi 4 4 Vi 400,000 1.040 IM 3 3 3 V* 4 4M 4Vi 450,000 1.065 IVj 4 3 IM 4 4'/. 5 500,000 1.125 IM 3 3 4 4 4V4 5 550,000 600,000 1.165 1.205 IM 2 3 3 3 Vi 4 3 VS 4 4VS 5 454 5 5 5 650.000 1440 2 IM 3 Vi 4 4VS 5 6 700.000 1.275 2 3*4 IM 4M 5 5 6 750.000 1410 2 3 W 3 Vi 4*4 5 6 6 >00.000 1445 2 3*4 4 4V. 5 6 6 >50,000 900.000 950.000 1,000.000 1475 1.405 1.435 1.465 2 2 2 2 IM 4 44 44 44 4V* 5 4V. 5 56 56 6 6 6 6 6 6 6 * Subject to plut or miaua $% tolerance due to ariations in manufacturing processes. 8 1*4 IVi IVi 1*4 IM IV* 2 2 2 2 VS 2 Vi 3 3 3 3 VS 3 VS 4 4W 4M 5 5 5 6 6 6 6 6 6 9 IVi IVi IV* IVi IM 2 2 2 2 VS 2 VS 2V 3 3 3 Vi 3 Vi 4 4 Vi 4*4 5 5 6 6 6 6 6 6 RBB 00328 22 ===== ROCKBESTOS = CONDUIT SIZE TABLES TABLE EL 600 VOLT LEAD SHEATHED A.V.C. POWER CABLE O.D.* Size in Inches i 2 NUMBER OF WIRES 3|4 | 5 61 7 minimum; size of conduit A.W.G. **1$ .290 W M K 1 i'/i 1*4 1*4 **16 *14 *12 10 8 .305 V. M1 1 l'/. IV4 1*4 .320 W 1 1 1 1 VS IVi IV, .340 W .360 VS 1 1 1 1 1M 1*4 m 1V m 1V4 1W m .390 W 1 i y* IVi IVi 2 2 6 5 4 2 .430 .450 .480 'A, 44 1*4 1*4 IVi m m 1VS lW i*4 1'/. 2 2 2 .505 Vi iVi IV, 2 2 22 22 2 2 Vi 2 VS 2VS 2 .570 W 1*4 IV, 2 2V, 2*4 3 1 0 00 000 -620 .660 .705 .755 1 1 1 1 IV, 2 2 2Vi 3 3 2 2 2Vi 3 3 3 2 2 2 2Vi 3 IV. 2V, 3 3 3VS 3*4 3 Vi 0000 2.50.000 C.M, 300.000 350.000 400.000 .815 .955 1.010 1.060 1.105 m 1 Vi 1W 1IV*4, 2 Vi 3 3 3 3 2*4 3 2 3 3 3 3 vi IV. 3 */i 4 3 Vi 4 4 4 4 Vi 3 VS 4 4 VS 4*4 5 4 4 VS 5 5 450.000 500.000 550.000 600.000 650.000 1.150 1.190 1.265 1.305 Wt 2 2 1 3 3H iy. 3 Vs 3W 154 3 V, 4 4 4 4 V, 4V, 4*4 4*4 5 S s 5 6 6 1.340 2 3 54 4 4*4 6 6 6 6 6 6 6 700,000 1.375 2 4 4 4 Vi 6 6 750.000 1.410 2 4 4 5 6 6 >00.000 1.440 2 4 4 5 6 6 650.000 900.000 950,000 1,000.000 1.470 2 4 4 5 1.505 1.535 1.560 2 VS 2V* *W 4 4 *w 4<VwS *v. 5 5 6 6 6 6 6 * Subject to plus or minus tolerance due to variations in manufacturing processes. ** Sixes No- 12 A.W.G. end smaller can be supplied with 2/64* lead. 8 IVi 1*4 IM 2 2 2 2 2Vi 2 VS 2Vi 3 3 3 Vi iU * 4 5 5 6 6 6 6 6 9 IV, 1'/. 2 2 2 2 2 Vi 2 Vi 2 V, 3 3 3 Vi 3 Vi 4 4 4 Vi 5 6 6 6 6 6 TABLE EM 1000 VOLT A.V.C. POWER CABLE Size O. D.* in Inches i A.W.G. 18 16 14 12 8 6 S 4 3 2 0 00 000 ZSO0.O00O0Q C.M. 300.000 350,000 400,000 450,000 soo.ooo 550,000 600,000 650.000 700,000 750,000 800,000 900,000 1.000,000 .285 .300 .315 .335 .360 .390 .425 .450 .475 .500 .535 .615 .655 .700 .750 .110 .895 .950 1.00$ 1,050 1.995 1.136 1.175 1.215 1.250 1.285 1.320 1.355 1.415 1.475 V4 V> lA VvSs Vvs) K *4 w 84 1 1 1l i1**44 1*4 1*4 1*4 1*4 1*4 2 2 2 2 2 2 2 2 2 84 94 84 1 1 1 1*4 1;w*4 1*4 m 1*4 2 2 2 2 aaww 333 3 3 3*4 3 VS 3*4 3*4 3 Vi 4 4 NUMBER OF WIRES 3 4f5 6 7 MINIMUM SIZE OF CONDUIT V, 1 1 IVi 1*4 84 1 1*4 1*4 1*4 1 1 1 l i*4 1*4 1*4 m IV, 114 1*4 IV) IV, 1*4 1*4 l iw 1*4 IVi 1*4 IV, 1W 2 2 2 1*4 IM 1*4 2 2 IV, 1W 2 2 2 H 1W 2 2 2*4 1*4 2 2 2 2 2a*w4 333 2 2 2aaVwwS 3 32 3a*w4 2 % 533 3*4 3*4 4 4 2*4 3233 *4 3*4 3VS 4 4 4*4 32 Vi 333 V, 3*4 4 4 4 Vi 4 3 3*4 4, 4*4 5 3 4 4 4*4 5 3*4 4 4*4 5 3*4 4 4*4 5 6 3Vi 4 4*4 5 6 3*4 4*4 5 5 6 3 V, 4Vi 5 4 4Vi 5 6 6 66 4 \y, 5 6 4 66 * Subject to plus or minus tolerance due to variations in manufacturing processes. 8 1*4 IV* 1*4 IV* 1*4 2 2 2 2*4 2*4 2*4 3 3*4 3*4 4 4 4*4 4*4 5 5 6 6 6 9 1*4 1W IV) 1*4 2 2 2 2*4 2*4 32*4 3 3a*w4 4 4 4*4 5$ i 6 6 6 6 rBB 00329 -- ROCKBESTOS - CONDUIT SIZE TABLES TABLE F 2000 VOLT A.V.C. POWER CABLE Sue O. D,* in Inches i 2 NUMBER OF WIRES 3 4|5 !6 7 MINIMUM SIZE OF CONDUIT A.W.G. 24 .355 k 1 1 Wi iy* IK IK 12 .385 H 1 1 154 IW 154 10 .410 W 1 Wi Wi 154 l% 2 8 .440 iy. iy. w 154 : 2 2 6 .475 Vi Wi i y. IK 2 '2 2 5 ,500 Vi Wi Wi 1W 2 2 254 4 .525 Vi Wi VA 2 2 2 254 3 .350 Vi i y. IK 2 2 2'/* 2V, 2 ,585 IK Wi 2 2VIi 254 254 i .845 1 2 2 2 2 Vi 3 3 0 .885 1 2 2 254 254 3 3 00 .730 1 2 2 2*/, 3 3 3 000 .780 iy. 2 2 333 354 0000 .840 154 VA JK 3 3 3 Vi 354 230,000 CM. .925 m 2'A 2Vi 3 354 4 4 300,000 .980 iV* 3 3 3 Vi 3K : 4 454 350,000 1.035 1V4 3 3 3 V, 4 4 454 400,000 430,000 500,000 1.080 1.125 1.185 IV* ly* iy* 3 3 3 3 3 3K *54 4 4 4 4 454 K 45 54 5 5 5 550.000 000,000 050.000 700,000 750,000 1.205 1.245 1.280 1.315 1.350 2 2 2 2 2 3 3M 4 4V5 *54 IK 3Vt *54 iVi 3 54 sy. 4 4 414 454 4V, 454 5 5 5 6 6 5 6 4 6 6 800,000 000,000 1,000.000 1.385 1.445 1.505 2 2 2 j y. 4 4 4 4* 4554 56 6 6 566 6 6 * Subject to pJu* or minut tolerance due to variations in manufacturing processes. 8 2 2 2 2 2Vt IK 254 2y* 3 3 3 j /. 3 Vi 4 4K 4y* 5 5 5 6 6 6 6 6 $ 9 2 2 2 *K 2 Vi 254 3 3 3 3 3*/, 4 4 454 5 5 6 6 4 8 6 TABLE G 3000 VOLT A.V.C. POWER CABLE O. D.* Size in Incites i 2 NUMBER OF WIRES 3 4I 5!6 7 MINIMUM SIZE OF CONDUIT A.W.G. 14 12 10 .425 Vi .445 .470 uVi IM 1V4 1V4 IK m iy4 Wi IK 154 154 iy. ,2 2 22 2 2 2 S 6 .500 iVi 154 154 2 .335 K iy4 IVi 2 2 2 *y. 2V 2Vr 5 .580 H IK JK 2 2 , 2 Vi 2 Vi 4 .585 K IK 1VS 2 2*4 IV* 2 Vi 3 .810 1 iy. iy. 2 2 Vt n't 3 2 .645 1 2 2 2 2*/, 3 3 1 .705 1 2 2 2y, 3 , 3 3 0 .745 1 2 2 2V4 3 . 3 3 Vi 00 .790 iy4 2 2 Vi 3 3 *3 3Vi 000 0000 .840 iy4 jy. sy> 3 .900 iy4 JK JK 3 3 ; 3i4 3K 1 3 V* iy. 4 250,000 C.M. .985 YA 3 3 3 Vi 3 Vi 1 4 4K 300,000 1.040 iK 3 3 Wz 4 : 4 Vi 4 Vi 350,000 1.095 IK 3 3 IK 4 1 4 Vi 5 400.000 450,000 500.000 550,000 800,000 850,000 700,000 750,000 800,000 61.140 IV* 3 3 4 1.115 2 3 3 Vi 4 1.225 2 K 3 vi 4 1.265 2 3 V4 354 4 4*/, 1 4Vi 4Vi 1 s 4K ; 5 4'/> 5 8 6 1.305 1.340 1.375 1.410 1.445 2 2 2 2 2 354 3V4 3 Vi 3 Vi 4 Vi 4 Vi i 5 16 K 4 41/, 5 ; 6 4 4 4Vi 5 4 4 56 8 8 6 8 8 900,000 1.505 2 4 4 5 6 8 1,000,000 1.585 2 Vi 4 */ 5 6 6 * Subject to plus or minus 5% tolerance due to variations in manufacturing proceases. 8 2 2 2 Vi 2V4 2Vt 3 3 3 3 IK IM 354 4 4 4K 5 6 66 8 6 6 9 2 2y, 2 Vi 2'/* 3 3 3 3 3 3Vt 4 4 4 4Vz S s 6 8 8 8 6 RBB 00330 24 ROCKBESTOS CONDUIT SIZE TABLES TABLE H 5000 VOLT A.V.C. POWER CABLE Sire O. D.* Indie* i 2 NUMBER OF WIRES 34 ___ 6 7 MINIMUM SIZE OF CONDUIT A.W.C. 14 12 8 \i10 s &6 5 4 .415 .505 IiQK i*4 IK IK 2 2 2 2 2 .520 .560 Yt IK lK 1 Yt 2 2 .595 IK IK 2 ,620 1 .645 1 w* 2 2 2 2 2 22 2 2 VS 2V 2Vi 2 Vi 2y, 2 Vi 3 2 Vi 2 Vi 3 3 3 3 2 00 000 0000 250,000 C.M. 200,000 250*000 400.000 450,000 500,000 550,000 600,000 650,000 700,000 .670 .705 .765 .105 ,650 .900 .960 1.045 1.100 1.155 1.200 1.245 1.265 1.225 t.265 1.400 1.425 1 1 1% 154 i*4 m IK IK \Y* IK 2 2 2 2 2 2 2 2 2 2 2 2y; JK 2W 3 2 3 3 *K 3V. 3H 3 V. 4 4 2 2 2 JK 2 V, J9 K 3 3 33YVaS 3V, 3 Vi 3 Vi 4 4 4 JK JK JK 3 3 3 3 3 VS 3 Vi 4 4 4 44>VA, 4 Vi 4 Vi JK 3 3 3 3 5VS 3VS 4 4 4 Vi 4 Vi 4VS 5 j 5 6 3 3 3 3 VS 3 Vi 3 VS 4 4 Vi 4 Vi 5 5 5 5 6 6 3 3 3 VS 3 Vi 4 4 4 4 Vi 5s 6 6 750,000 1.470 2 4 4 5 600,000 900,000 1,000,000 m1.505 1,565 1.625 2 445 4 4Vi 5 4K 4 VS 6 6 6 6 * Subject to plut or minui 5% tolerance due to variation* in manufacturing procetie*. 8 inJK 3 3 3 3 3 J Vi 3 Vi 4 4 4 4 Vi j 6 6 9 18 3 5 3 3 3 3V4 3 VS 4 4 4K 5 6 RBB 00331 ROCKBESTOS = 600 VOLT . A.V.C. BOILER ROOM WIRE ' GENERAL LIGHTING AND CONTROL CIRCUITS, WIRING AROUND OVENS, - FURNACES. LEHRS, TENTER FRAMES, BOILER ROOMS, SOAKING PITS, ELEVATOR , AND LOCOMOTIVE CONTROL PANEL WIRING, ETC. THU It Tut COHtTtUCTlOH OT SIZES It TO TKH It TH( CSMTIUCnOO Or SIZES TO tit 25 t. SOLID TLSIN COrtTS CONDUCTOR i. EELTCO ASBESTOS TtmtHID CAN title t. rtUCO ttlltTOI I. tSIElTOt ONAID This wire is recommended for open wiring tnd general conduit work where wiring is or may be subjected to heat, corrosive fumes, oil, grease or fire hazard. It will operate without failure under constant high temperatures, and at the same time possesses sufficient moisture resistance to Operate without failure under average conduit moisture conditions. However, if it is known that parts of a circuit will be sub merged for long periods, use Table EL, Lead Sheathed A.V.C Power Cable shown on page 28. A.V.C. Boiler Room Wire handles and pulls into conduit the same as any other wire. See Conduit Size Table on page 21. For the same application, but where a stranded conductor is required, use A.V.C. Power Cable, Table E, shown on page 26. Recommended also for switchboard wiring when an asbestos braided wire is required. This wire is National Electrical Code Type AVA, listed by Underwriters' Laboratories. Size A.W.G. 0000 000 00 0 1 2 3 4 5 6 8 10 12 14 16 18 TYPE AVA--TABLE C--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 37) Bare Diam* Inches .460 .410 .365 .325 .289 .258 .229 .204 .182 .162 .128 .102 .081 .064 .051 .040 Nominal Thickness First Felted Wall Nominal Thickness V. C. Insert Nominal Thickness Second Felted Wall Ed Nmm d < Nominal Finished Diam<* Mils Mils Mils BE Inches o[fc 15 30 30 .700 15 30 30 S .650 s15 15 30 30 30 30 Qmm .605 .565 15 30 30 .530 15 30 20 a .480 15 30 20 fit Cd .450 15 30 20 h .425 15 30 20 S o .405 15 30 20 Cfa .385 25 20 o .310 25 25 20 20 cn 2 .285 .265 25 20 a .245 25 20 Umm .235 e25 20 .220 Approx. Net Weight per M ft. Pounds 800 657 543 422 348 279 231 193 160 138 87 62 47 38 31 27 Standard Shipping Lengths (Feet) Coils Reels 500 500 1000 1000 1000 1000 1000 450 500 500 500 500 500 1000 1000 1000 1000 1000 1500 1500 2000 2000 2000 * Finished diameters Riven above are average. A tolerance of plus or minus is necessary due to variations in process of manufacture. NEMA dielectric test volutes in kilovolts, 2,5 for sixes 18 to 8 and 3.0 for 6 to 4/0. RBB 00332 16 ROCKBESTOS 600 VOLT A.V.C. POWER CABLE ASHPITS AND ASH ALLEYS, AROUND SOAKING PITS, FUBNACES, OVENS, LEHRS, TENTER FRAMES, STEAM TUNNELS, ALL BOILER ROOM CIRCUITS AND FOR GENERAL HOT-SPOT WIRING G I STAAMbfD PLA1* COM* tOMfUCTOS 2 3i l. ffUID AMCSTOS * A. YAMltSMfD CAMItIC . *11(110$ %. AtirtTOS MAID This cable is recommended for general power circuits as well as for the same applications as given for Table C Boiler Room Wire on the preceding page. A.V.G Power Cable handles and pulls into conduit the same as any other cable. See conduit size able on page 21, It will operate continuously without failure under constant high temperatures, yet can also meet ordinary conduit moisture conditions without failure. If, however, it is known that parts of a circuit will be submerged for long periods, such as circuits around ashpits where ashes are wet down, we recommend Table EL Lead Sheathed A.V.G Power Cable shown on pace 26. Rodcbestos A.V.C. 600 Volt Power Cable is also available up to 2,000,000 CM. For the same type ot cable for service voltages up to 5000 see Tables EM, F, G and H on pages 29, 30, 31 and 32v This cable is National Electrical Code Type AVA. listed by Underwriters' Laboratories. TYPE AVA--TABLE E--600 VLT SERVICE (NEMA Standard No. 39-54 Table I) Size Stranding l.OOO.OOOCM 950,000 900,000 850,000 800,000 750,000 700,000 650,000 600,000 550,000 500,000 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 1 2 3 4 5 6 8 10 12 14 16 18 61/.1280 61/.1248 61 AI2I5 61/. 1180 61/.1145 6!/.1109 6!/. 1071 61/.1032 61/.0992 61/.0950 37/.1162 37/.1103 37/. 1040 37/. 0973 37/. 0900 37/.0822 19/.1055 19/.0940 19/.0837 19/.0745 19/0664 7/.0974 7/.0867 7/.0772 7/.0688 7/.0612 7/.0486 7/.0385 7/.0305 7/.0242 7/.0193 7/.0151 Bure Uiints Nominal Nominal Nominal Thickset* First Thickness Thickness Second Felted V. C Felted Wall Insert Wall Nominal Finished Diam.* Net Weight per M ft. Inches 1.152 1.123 1.093 1.062 1.031 .998 .964 .929 .893 .855 .814 .772 .728 .681 .630 .575 Mils 30 30 ' 30 30 30 30 30 30 30 30 30 30 30 30 30 30 Mils 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 AO Mils 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 Inches Pound* U2 N 1 465 Cfl 1 435 5 1.405 < 1.375 a 1.345 1.310 1.275 s 1.240 gj 1.205 1.165 1 125 1.085 us 1 040 .995 0 .940 it, .885 3510 3346 3182 3018 285-1 2689 2524 2359 2193 2027 1860 1692 1525 1357 1188 1017 .528 20 30 30 Vi US .780 839 .470 20 30 30 z .720 690 .418 20 30 30 .670 571 P 373 20 30 30 ** .625 476 -332 20 30 30 .585 371 .292 15 30 15 .505 287 ,260 15 30 15 .470 238 .232 15 30 15 .445 198 .206 15 30 15 .420 166 .184 15 30 15 .395 141 .146 15 30 15 .360 100 .116 15 30 15 .330 76 .092 15 30 15 .305 59 .073 15 30 15 .285 46 ,058 15 30 15 .270 39 .045 15 30 15 .255 33 Shipping Lengths (Feel) Coils Reels 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 1000 1000 1000 1000 1000 1000 i poo 1000 1000 1000 1000 1000 10QQ 1000 * Finishes diameters given above are average. A tolerance of plus or minus 5% is necessary due to variation! in proccsa ot manufacture. NEMA dielectric test voltages in kilovolts. 2.S lor sites It to S. 3.0 for 6 to 4/0 and 4.0 for 250.000 to 1.000.000 CM. RBB 00333 ROCKBESTOS THREE CONDUCTOR 600 VOLT A.V.C. POWER CABLE for{ SAME USES AS TABLE "E" WHERE MULTI-CONDUCTOR CABLE IS REQUIRED I1 1 4I 7 I. RT.AHOEO PUIN COPPER CONDUCTOR 1 PELTED A..E.TO. . CARLE TAPE T- V4DNISHE0 CA...IC T. AERERTOA RRAID A. PELTED ACRfCTOS * ANTE PILLEAI This construction consists of three Table E 600 Volt Power Cables minus their outer braids, cabled to gether with jute fillers, taped and covered with a heavy asbestos braid. Asbestos filters, lead sheathing or armoring can be furnished on specification. NOTE:--Multi-conductor power cables for higher rated voltages, with individual conductors made up like Tables EM, F, G and H (in the following pages) though not cataloged here, are available. Specifications of any particular size on request. TABLE EC -- 600 VOLT SERVICE Size Stranding Bare DUiti, Inches Nominal Single Diam.* Inches Nominal Finished Diam,* Inches Approx. Net. Wt, per M ft. Pounds Standard Shipping Length. (Feet) Reels 500,000 CM 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 1 2 3 4 5 6 8 10 12 37/. 1162 37/. 1103 37/.1040 37/.0973 37/.0900 37/.0822 19/1055 19/.094Q 19/.0837 19/.0745 19/.0664 7/.0974 7/.0867 7/.0772 7/.0688 7/.0612 7/.0486 7/.0385 7 / 0305 .814 .772 .728 .681 .630 .575 .528 .470 .418 .373 .332 .292 .260 .232 .206 .184 .146 .116 .092 1.035 .995 .950 .905 .850 .795 .690 .630 .580 .535 .495 .415 .380 .355 -330 .305 .270 .240 .215 .350 2.265 2.170 2.070 1.955 1.835 1.610 1.480 1.370 1.275 1.190 1.015 .940 .885 .835 .780 .705 .640 585 6076 5527 4979 4426 3869 3298 2680 2189 1806 1486 1238 952 793 661 560 474 352 270 217 500 500 500 500 500 500 500 500 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 * Finished diameters given above are avenge. A tolerance of plui or minus it necessary due to variations in process of manufacture, Dielectric test voltages between conductors in kilovolts. $.0 for sires It to 8. 6.0 for 6 to 4/0 and 8.0 for 250.000 to 500,000 CM. Dielectric test voltages from conductor to ground in kilovolts. 2.5 for sixes 18 to 8, 5.0 for 6 to 4/0 and 4.0 for 250,000 to 500,000 CM- RBB 00334 ROCKBESTOS 600 VOLT LEAD SHEATHED A. V. C. POWER CABLE LIGHTING, CONTROL AND POWER CIRCUITS UNDER ANY CONDITION FROM COMPLETE SUBMERSION TO CONSTANT HIGH TEMPERATURES it at i i. tTniKott pun cornu conducts* i. mate urirrot a. namsurD uiuii t. rub nufiu a. hid This wire is our standard A.V.C. construction except that a lead sheath has been substituted for the asbestos braid. The lead sheath does not affect the ability of the construction to withstand high temperatures, but does enable it to stand up successfully when completely and continually submerged. This is the wire to use where a conduit run is exposed to. widely varying conditions throughout its length. Thus it is particularly suitable fOt power stations located on tidewater where certain ducts are sometimes flooded, but where another part of the same circuit is exposed to high temperature. Recommended also where conden sation is especially heavy as in ashpits where it is the practice to wet down the ashes. Specify lengths desired, otherwise prices will be figured on standard shipping lengths. This cable is National Electrical Code Type AVL, listed by underwriters' Laboratories. NOTE: - Other power and contra! cables are also available with lead sheath, though not specifically cataloged. TYPE AVL--TABLE EL--600 VOLT SERVICE (NEMA Standard No, 39.54 Table 2) Sue Stnndittf Bare Diatu. Nominal Thickness Fiesl Nominal Thickness Nominal Thickness Second Felled V. C. Felled Lead Wall Insert Wall Thiduieu Nominal Finished Diam.* Approx. Net Weight per M ft. Staneiard Shipping Lengths (Feet) Inches Mila Mila Mila Intkei Inches Pounds Reels 1,000,000 CM 61/.1280 1.152 30 40 40 6/64 1.560 5613 500 950,000 61/.1248 1.123 30 40 40 6/64 1.535 5407 500 900,000 61/.12I5 1-093 30 40 40 6/64 1.505 5201 500 850,000 61/.1180 1.062 30 40 40 6/64 1.470 5042 500 800,000 61/.1145 1.031 30 40 40 6/64 1.440 4783 500 750,000 61/. 1109 -998 30 40 40 6/64 1.410 4570 500 700,000 61/.1071 .964 30 40 40 6/64 1-375 4356 500 650,000 61/.1032 .929 30 40 40 6/64 1.340 4140 500 600,000 61/.0992 .893 30 40 40 6/64 1.305 3923 500 550,000 61/.0950 .855 30 40 40 6/64 1.265 3786 500 500,000 37/.1162 .814 30 40 40 5/64 1.190 3161 500 450,000 37/.1103 .772 30 40 40 5/64 1-150 2944 500 400,000 37/. 1040 .728 30 40 40 5/64 1.105 2724 500 350,000 37/.0973 .681 30 40 40 5/64 1.060 2500 500 300,000 37/.0900 .630 30 40 40 5/64 1.010 2269 500 250,000 37/.0822 .575 30 40 40 5/64 -955 2033 500 A.W.G. 0000 I9/.1055 .528 20 30 30 4/64 .815 1516 1000 000 19/.0940 .470 20 30 30 4/64 .755 1313 1000 00 19/.0837 .418 20 30 30 4/64 .705 1144 1000 0 19/.0745 373 20 30 30 4/64 ,660 1005 1000 1 19/-0664 .332 20 30 30 4/64 .620 890 1000 2 7/.0974 .292 15 30 30 4/64 .570 774 1000 3 7/.0867 .260 15 30 30 3/64 .505 563 1000 4 7/.0772 .232 15 30 30 3/64 .480 504 1000 5 7/.0688 .206 15 30 30 3/64 .450 454 1000 6 7/.0612 .184 15 30 30 3/64 .430 412 1000 8 7/. 0486 .146 15 30 30 3/64 .390 348 1000 10 7/.0385 .116 15 30 30 3/64 .160 301 1000 12** 7/.03O5 .092 15 30 30 3/64 .340 267 1000 14** 7/.0242 .073 15 30 30 3/64 .320 243 1000 16** 7/.0193 .058 15 30 30 3/64 .305 224 1000 18** 7/.0151 .045 15 30 30 3/64 .290 209 1000 Fituahtd diameters given above are averaie. A tolerance o( pin* or minus is necessity due to variations in process of manufacture. Sties Ho. 12 A.W.G. and smaller can be supplied with 2/M' lead tbeith. HBMA dielectric test volute for all sires 1.5 kilovolts for &ve minutes on a full reel. RBB 00335 ROCKBESTOS 1000 VOLT A.V.C. POWER CABLE GENERAL POWER WIRING IN BOILER ROOMS, POWER PLANTS, STEEL MILLS AND INDUSTRIAL PLANTS 29 1114 1 1. STBANDSO RLA1. CORRCB CONDUCTOR *. FH.TC0 ASBtSTOS 3. VRRNlSNSD CANSRlC 3. FCLTCD ASBESTOS 3. ASSCSTOS BRAID This.cable is recommended for the same general applications as Rockbestos 600 Volt A.V.C. Power Cable, Table E, except that it is designee! to operate at 1000 volts or less. Lead sheathed or armored if desired. Also available in multi -conductor construction. Specification for any given si2e on request. TABLE EM -- 1000 VOLT SERVICE (NEMA Standard No. 39-54 Table 3) Size Stranding Bare Dism. Nomina! Nominal Nominal Thickness First Thickness Thickness Second Felted V. C Felted Wall Insert Well Nominal Finished Diam.* Approx. Net Weight per M ft. Standard Shipping Lengths (Feet) Inches Mils Mils Mils Inches Pounds Coils | Reels 1.000,000 CM 61/. 1280 1.152 30 45 40 cn 1.475 3521 500 950,000 61/.1248 1.123 30 45 40 M 1.445 3354 900,000 61/. 1215 1.093 30 45 40 (ft 1.415 3187 500 500 850,000 800,000 61/.1180 61 /.1145 1.062 1.031 30 30 45 45 40 40 < 1.385 1.355 3020 2853 750,000 61/.1109 .998 30 45 40 fit 1.320 2687 700,000 61/.1Q71 .964 30 45 40 1.285 2521 500 500 500 500 650,000 61/.1032 .929 30 45 40 th 1.250 2355 600,000 61/.0992 .893 30 45 40 s 1.215 2189 500 500 550,000 61/.0950 .855 30 45 40 ft 1.175 2023 500,000 450,000 37/.1162 37/.1103 .814 .772 30 30 45 45 40 40 o5d 1.135 1.095 1857 1691 500 500 500 400,000 37/. 1040 .728 30 45 40 1.050 1525 500 350,000 37/.0973 .681 30 45 40 1.005 1359 500 300,000 250,000 37/.0900 37/.0822 .630 .575 30 30 45 45 40 40 cS .950 .895 1193 1024 500 500 A.W.G. O 0000 000 19/. 1055 19/.0940 .528 .470 20 20 45 45 30 30 ((fftt .810 .750 857 708 00 19/. 0837 .418 20 45 30 z .700 588 0 19/.0745 .373 20 45 30 u .655 491 1 19/.0664 .332 20 2 7/.0974 .292 15 45 45 30 15 MHe .615 .535 413 299 lobo 1000 1000 1000 1000 1000 3 7/. 0867 .260 15 45 15 .500 250 1000 4 7/.0772 .232 15 45 15 .475 209 1000 5 7/.0688 .206 15 45 15 .450 176 1000 6 7/. 0612 .184 15 45 15 .425 151 500 1000 8 7/.0486 .146 15 45 15 .390 109 500 10 7/.0385 .116 15 45 15 .360 84 500 12 7/.0305 .092 15 45 15 .335 67 1000 14 7/.0242 .073 15 45 15 .315 54 1000 ' Pinished diameters riven Above Are average. A tolerance of plus or minus SCe is neecssary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts, 3.S for sires 14 to 3 and 4.3 for 6 to 1.000,000 CM, RBB 00336 30 ROC K B E S T O S 2000 VOLT A.V.C. POWER CABLE GENERAL POWER WIRING IN BOILER ROOMS, POWER PLANTS, STEEL MILLS AND INDUSTRIAL PLANTS 5/ 12 I. STIMHOES SLA'K COSSE, COK0UCTQ* )` t. fCLTCO ,t,t%TOS 3. ViL.HtSMED ClltlC $ * FtlTCC 1IIUTOI 3. ,s,t,F0s SMID This cable is recommended for the same general applications as Rockbestos 600 Volt A.V.C. Power Cable, Table E, except that it is designed to operate at 2000 volts or less. Lead sheathed or armored if desired. Also available in multi-conductor construction. Specification for any given size on request. TABLE F -- 2000 VOLT SERVICE (NEMA Stmdatd No. *9-54 Tabic 4) Size Stranding Bare Dim. Nominal Nominal Nominal Thickness First Thickness Thiekneas Second Felted V. C. Felled Wail Insert Wall inches Mils Mils MUs Nominal Finished Dimm.* Approx. Net Weight per M ft. Inches Pounds Stan dard Ship ping Ungths F 0 Coils Reels 1,000,000 CM 61/. 1280 1.152 30 60 40 tfi 1.505 3558 500 900,000 61/.1215 1.093 30 60 40 N 1.445 3230 500 800,000 61/.1145 1.031 ' 30 60 40 7 1.385 2907 500 750,000 61/. 1109 .998 30 60 40 2 1.350 2738 700,000 61/. 1071 .964 30 60 40 < 1.315 2569 650,000 600,000 61/.1032 61/. 0992 .929 .893 30 30 60 40 E 1,280 2403 60 40 1.245 2236 550,000 61/.0950 .855 30 60 40 1.205 2066 500,000 37/. 1162 .814 30 60 40 S 1.165 1897 450,000 37/.1103 .772 30 60 40 1.125 1728 400,000 37/.1040 .728 30 60 40 M 1.080 1564 350,000 37/.0973 .681 30 60 40 e 1.035 1390 300,000 37/.0900 .630 30 60 40 -- .980 1225 250,000 37/.0822 .575 30 60 40 .925 1060 A.W.G. s- 500 500 500 500 500 500 500 500 500 500 500 0000 19/. 1055 .528 20 60 30 o .840 878 000 19/.0940 .470 20 60 30 ba .780 715 1000 1000 00 19/.0837 .418 20 0 19/.0745 .373 20 1 19/.0664 .332 20 2 7/.0974 .292 15 3 7/.0867 .260 15 60 30 .730 594 60 30 t/5 .685 492 60 30 5 .645 412 60 25 s .585 324 60 25 2 .550 269 1000 1000 1000 1000 1000 4 7/.0772 .232 15 60 25 5 7/. 0688 .206 15 60 25 6 7/.0612 .184 15 60 25 8 7/.0486 .146 15 60 25 10 7/.0385 .116 15 60 25 12 7/.0305 .092 15 60 25 14 7/.0242 .073 15 60 25 .525 .500 .475 .440 .410 -385 .365 233 1000 197 1000 172 1000 130 1000 104 1000 85 500 1000 70 500 1000 * urw*^ diameter* Eiven above are average, A tolerance of plus of minus is necessary due to variations in process of manufacture. NEMA dielectric test voltages in ktiovphs. 4.S for sizes 1* to S, $.0 J0r 6 and 5, S.S for 4 to 2 and 6.0 for 1 to 1,000.000 CM. RBB 00337 ===== ROCKBESTOS ===== 3000 VOLT A.V.C. POWER CABLE GENERAL POWER WIRING IN BOILER ROOMS, POWER PLANTS, STEEL MILLS AND INDUSTRIAL PLANTS 31 12 I. STRAMOCD PLAIK COPPCR CONDUCTOR rtLTCO AIIHTOf 3. VARNISH CD CAKBRtC riitee unttoi ASRtSTOS RRAIO This cable is recommended for the same general applications as Rodcbestos 600 Volt A.V.C. Power Cable, Table E, except that it is designed to operate at 3000 volts or less. Lead sheathed or armored if desired. Also available in multi -conductor construction. Specification for any given size on request. Site 1,000,000 CM 900,000 800,000 750,000 700,000 650,000 600,000 550,000 500,000 450,000 . 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 I 2 3 4 5 6 10 12 14 TABLE G -- 3000 VOLT SERVICE (NEMA Standard No. 39-54 Table 5) Stranding Bare Diam. Inches Nominal Nominal Nominal Thickness Pint Thickneas Thickness Second Felted V, c. Felted Wall Inaert Wall Mil, Milt Mils Nominal Finished Diam,* Inches Approxs Net Weight per M Ft, Pounds Standard Shipping Lengths {Feel) Reels 61/.1280 1.152 30 90 40 ifi 1.565. 3635 500 61/.1215 1.093 30 90 40 N 1.505 3302 500 61/.1145 1.031 30 90 40 tfi 1.445 2969 500 61/.1109 .998 30 90 40 2 1.410 2800 61/.1071 61/.1032 .964 .929 30 30 90 90 40 40 < 1.375 tc 1.340 2631 2457 61/.0992 .893 30 90 40 1.305 2293 500 500 500 500 61/.0950 .855 30 90 40 U) 1.265 2119 500 37/.1162 .814 30 90 40 s 1.225 1955 500 37/.1103 37/.1040 57/.0973 .772 .728 .681 30 30 30 90 90 90 40 40 Qc oi 1.185 1.140 40 1.095 1786 1612 1443 500 500 500 37/.0900 .630 30 90 40 1.040 1269 500 37/.0822 .575 30 90 40 u .985 1094 H 500 3 19/. 105 5 .528 20 90 30 .900 920 1000 19/.0940 .470 20 90 30 tarn o .840 766 1000 19/.08 37 .418 20 90 30 V) .790 642 1000 19/.0745 -373 20 90 30 .745 543 1000 19/.0664 .332 20 90 30 1C .705 459 1000 7/.0974 .292 15 90 25 w .645 383 1000 7/.0867 .260 15 90 25 .610 331 1000 7/.0772 .232 15 90 25 .585 260 1000 7/.0688 .206 15 90 25 .560 225 1000 7/.0612 .184 15 90 25 -535 195 1000 7/.0486 .146 15 90 25 .500 155 1000 7/.0385 .116 15 90 25 .470 125 100C 7/.0305 .092 15 90 25 .445 105 1000 7/.0242 .073 15 90 25 .425 90 1000 * Finished diameters given above are avenge. A tolerance of plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts, 7.0 for sixes 14 to $, 7.S for 6 and 3, 4.0 for 4 to 2, 1.5 for 1 to 4/0 and 0.0 for 230,000 to 1,000.000 CM. RBB 00338 32 ROCKBESTOS 5000 VOLT A*V.C. POWER CABLE for GENERAL POWER WIRING IN BOILER ROOMS, POWER PLANTS, STEEL MILLS, INDUSTRIAL PLANTS, ETC- 1, fTftAHpco Plain coppcm conductor PtLTEO ASSfSTOi IliMtO CAHIftlC 4. FClTCO AISKCT6* $. ASBESTOS BBAID This cable is recommended for the same general applications as Rockbestos 600 Volt A.V.C. Power Cable, Table E, except that it is designed to operate at 5000 volts or less. Lead sheathed or armored If desired. Also available in multi-conductor construction. Specification for any given size on request. Size 1,000,000 CM 900,000 800,000 750,000 700,000 650,000 600,000 550,000 500,000 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 1 2 3 4 5 6 8 10 12 14 TABLE H -- 5000 VOLT SERVICE (NEMA Standard No. 39-54 Table 6) Stranding Bare Diatn. Nominal Nominal Thickness First Thickness Thickness Second Felted V. C. Felted Wall Insert Wall Nominal Finished Diwn.* Approx* Net Weight per M Ft. Standard Shipping Lengths (Feet) Inches Mils Mils Mils Inches Pounds Reelii 61/.1280 1.152 30 120 40 t6f*3i 1.625 3721 61/.1215 1.093 30 120 40 N 1.565 3379 61/.1145 1.031 30 120 40 V) 1.505 3040 500 500 500 61/.1109 .998 30 120 40 1.470 2876 500 61/.1071 .964 30 120 40 1.435 2701 500 61/.1032 .929 30 120 40 o 1.400 2532 61/.0992 -893 30 120 40 Us 1.365 2362 500 500 61/.0950 .855 30 120 40 ih 1.325 2190 37/. 1162 .814 30 120 40 s 1.285 2018 500 500 37/.1103 .772 30 120 40 a 1.245 1844 500 37/. 1040 37/.0973 .728 .681 30 30 120 120 40 40 3Ksa 1.200 1.155 1674 1500 37/.0900 .630 30 120 40 fiS 1.100 1324 37/.0822 .575 30 120 40 1.045 1153 500 500 500 500 a 19/.1055 .528 20 120 30 o .960 967 1000 19/.0940 .470 20 120 30 c .900 19/.0837 .418 20 120 30 /> .850 812 1000 687 1000 19/.0745 373 20 120 30 6*3 .805 19/.0664 .332 20 120 30 z. .765 582 1000 497 1000 7/.0974 7/.0867 .292 .260 15 120 25 O .705 15 120 25 l .670 402 1000 363 1000 7/.0772 .232 15 120 25 .645 319 1000 7/.0688 .206 15 120 25 .620 285 1000 7/.0612 .184 15 120 25 .595 251 1000 7/.0486 .146 15 120 25 .560 182 1000 7/.0385 .116 15 120 25 7/.0305 .092 15 120 25 7/.0242 .073 15 120 25 .530 .505 .485 152 1000 132 1000 117 1000 * Finished diameters given above are average. A tolerance of plus or minus NEMA dielectric rest voltage 12.0 kilovolts on all sizes. is necessary due to variations in process of manufacture. RBB 00339 ROCKBESTOS 600 VOLT A.V.C. MOTOR LEAD and APPARATUS CABLE COIL CONNECTIONS, STEEL MILL MOTORS, TRANSFORMER LEADS, ELECTRIC LOCOMOTIVES AND SUBWAY CARS 33 *1' *V-,>V***y**:> 1X94 , FLCXfVlI TINKIP CQFFCR COHOUCTO* t, FILTfD ASRCfTO* 4. VARNISHED CAN0RIC 4. FCLTCD IlKtrOS S. ASREStDS MA(D Rockbestos A.V.C. Motor Lead and Apparatus Cable was developed to meet a demand for a cable capable of standing up without failure under severe heat and fire hazard conditions, as encountered in steel mills, boiler houses, electrified railway equipment, subway cats, etc. . This cable is positively fireproof -- it will not burn under any condition, consequently fire cannot travel along its insulation. It withstands the attack of heat without drying out or becoming brittle and it remains permanently flexible. Can be installed the same as other cables and will not tot, bloom or swell as it is practically unaffected by fumes, vapors, oils or greases. Also supplied with extra flexible plain copper con ductor, stranded as shown in Table W on page 52. This cable is National Electrical Code Type AVA. NOTE: Although this is the cable generally recommended for motor leads, Rockbestos Flexible All-Asbestos Apparatus Cable Is sometimes used where only high' temperatures arc encountered. See page 51. TYPE AVA --TABLE L--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 53) SUe Stranding Bare Tinned . Diam. Nominal Nominal Thickness First Thickness Thickness Second Felted V. G Felted Wall Insert Wall ; Nominal Finished Diam.* Approx. Net Weight per M It. Standard Shipping Length* (Feel) 1,000,000 CM 950,000 900,000 850,000 800,000 750,000 700,000 650,000 600,000 550,000 500,000 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 I 2 3 4 5 6 S 10 12 14 16 18 427/.0480 427 / 0472 427/.0453 427/.0446 427/.0427 427/.0420 427/.0403 427 '.0390 427/.0 380 427/.0359 427/.0342 427/.0325 427/.0306 427/.0286 427/.0265 427/,0242 259/.0286 259/.0255 259/.0227 259/.0202 259/-0180 133/.0224 133/.0199 133/.0177 I33/.0158 133/.0141 133/.0112 105/.010 65/.010 41/.010 26/.010 16/010 Inches 1.295 1.274 1.222 1.204 1.153 1.134 1.088 1.053 1.027 .969 .923 .878 .826 .772 .716 .653 .600 .536 .477 .424 378 .336 .299 .266 .237 .212 .168 .120 .095 .075 .059 .045 Mils 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 15 15 15 15 15 10 10 10 to 10 10 10 10 10 10 10 Mib 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 30 30 30 30 30 30 30 30 30 30 30 30 30 30 50 30 Mil, 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 30 30 30 30 30 15 15 15 15 15 15 15 15 15 15 15 . Inrhea 1.585 1.565 Vi 2 1.515 K 1.495 1.445 J 1.425 < 1.380 fif ' 1.345 c 1.320 1.260 1.215 e 1.170 a 1.120 1.065 2 1 010 tim .945 C Vi Vi .840 $2 .775 .720 L> .665 = .620 .540 .500 .470 .440 .415 .370 .320 .295 .275 .260 .245 Pounds 3628 3533 3294 3199 2961 2794 2622 2428 2289 2087 1935 1764 1586 1404 1233 1055 875 721 592 492 415 300 248 210 173 147 104 76 59 45 38 32 Coil* 500 500 500 1000 1000 1000 1000 Reel* 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 1000 1000 1000 1000 iooo 1000 1000 1000 1Q00 1000 Finished diameters given above are average. A tolerance of plus or minus 5% is necessary due to variations in process of manufacture. hMA dielectric test voltages in kilovolts, 2.5 for sixes 18 to 8, 3.0 for 6 to 4/0 and 4.0 for 250,000 to 1,000,000 CM. RBB 00340 i 34 ROCKBESTOS 600 VOLT A.V.C. MINING CABLE ALL INTERNAL CIRCUITS OF ELECTRIFIED MINING EQUIPMENT I 1. FICIISU TINNED CDFFEt CONDUCTOR ** 4 t. FELTED ASIESTDt S 3. VAftNtSHED CANMlC 4. FELTED ASSEtVOS ASSESTOl MAIO This construction is simply our standard Table L, A.V.C. Motor Lead and Apparatus Cable with dia meters altered slightly so as to accurately fit the standardized bushing sizes of electrified mining equipment. It has been used for several years by manufacturers of mine locomotives, loaders and coal cutters for motor resistor and controller connections. It is also in constant use in the maintenance operations of hun dreds of mines. . Mining customers should definitely specify Table ML when requisitioning cable for all internal circuits of electrified mining equipment. NOTE: Rockbestos A.V.C. Mining Cable is not recommended or intended for use as drag or reel cable. TABLE ML-- 600 VOLT SERVICE Sire Stranding Tinned Bare Diam. Nominal Nominal Approx. Thickness Nominal Thickness First Thickness Second Max* Net Weight Felted V. C. Felted Finished per Wall Insert Wall Diam** M Ft+ Standard Shipping Lengths (Feet) Inches Mils Mils Mils Inches Pounds Coils Reels 500,000 CM 427, 61x7 (.0342) .923 20 40 40 1.274 1935 500 450,000 427, 61x7 (.0325) .878 20 40 40 1.226 1764 500 400,000 427, 61x7 (.0306) ,826 20 40 40 1.172 1586 500 350,000 427, 61x7 (.0286) .772 20 40 40 1.115 1404 500 300,000 427, 61x7 (.0265) .716 20 40 40 1.056 1233 500 250,000 427, 61x7 (.0242) .653 20 40 40 .988 1055 500 A.W.G. 0000 259, 37x7 (.0286) .600 15 40 15 .849 832 1000 000 259, 37x7 (.0255) .536 15 40 15 .779 682 00 259, 37x7 (.0227) All 15 40 15 .716 553 0 259, 37x7 (.0202) .424 15 40 15 .669 455 1 259, 37x7 (.0180) .378 15 40 15 .620 377 2 133, 19x7 (.0224) .336 10 40 10 .546 300 1000 1000 1000 1000 1000 3 133, 19x7 (.0199) .299 10 4 133, 19x7 (.0177) .266 10 5 133, 19x7 (.0158) .237 10 6 133, 19x7 (.0141) .212 10 8 133, 19x7 (.0112) .168 10 10 105/.010 .120 10 12 65/-010 .095 10 14 4I/.010 .075 10 40 40 40 40 40 40 40 40 10 .506 248 1000 10 .473 203 1000 10 .428 160 1000 10 .405 137 500 1000 10 .359 98 500 10 .313 71 500 to .294 54 1000 10 .273 43 1000 * Minimum diameter of maximum diameter. RBB 00341 ROCKBESTOS = FIREPROOF ELEVATOR CONTROL CABLE 35 I2 1. FLCllILf tTICi CORE 5. PELTED ASBESTOS 3 45 : a. COTTON SERVING . STRAMOEO PLAIN COPPER CONDUCTOR 6. RATON ORAID t. ASBESTOS FILLERS 4. CABLE TAPE 4. SPECIAL RUBBER . ASBESTOS 1RAI0 Enough eicrstor fires hive occurred so that there is a growing conviction among elevator manufacturers, building mans* ger* and architects that a fireproof elevator control or travailing cable is a necessity- In addition to being fireproof, it is important in this application that the cable shall be flexible and highly resistant to the deteriorating effect of almost constant flexing, heat and age. After considerable experimenting with various constructions Rockbestos developed an elevator cable the individual con ductors of which are insulated with a combination of latex and felted asbestos, surmounted by a polarized rayon braid. The individual conductors are cabled around a heavily protected flexible steel core wire with the proper lay to obtain the maximum degree of flexibility. The cable assembly is then covered with a lapped, moisture-resisting cable tape and finished with a tough, abrasion-resisting asbestos yarn braid, processed with special moisture-resisting and flameproof compounds co increase its inherent fireproof characteristics. The flexible stranded steel core running through the center of the cabling is the shortest member of the assembly and thus takes the weight of the cable plus any tension to which it may be subjected. It is recommended regard less of the length of the cable required but cable can be made up without the steel core if it is to ordered. The braids of the individual conductors are polarized according to the N.E.M.A. control cable color code unless otherwise specified. TABLE VK of Conductors Nominal Finished Diameter* Inches No. 16 A.W.G. No. 18 A.W.G. Approx, Net Weight per M ft. Pounds No. 16 No. 18 Standard Shipping Length* (Feet) Reels 2 .640 3 .640 4 .640 6 .640 8 .760 10 .860 12 .980 14 1.100 16 1.130 18 1.130 20 1.230 30 1.330 * Finished diameters given above are average. .610 .610 .610 .610 .730 .780 .880 .980 1.070 1.070 1.170 1.270 169 189 209 249 332 391 454 513 593 635 736 1015 156 171 186 In 226 288 Lengths 330 383 426 as 503 535 Specified 625 853 A tolerance of plus or minus 5% is necessary due to variations in process of manufacture FIREPROOF ELEVATOR LIGHTING CABLE STRAMPC& PLAIN COFFER CONDUCTOR 1. SPECIAL RUSSES 3. FCLTEO ASBESTOS 4. RATON RRAIO S. ASBESTOS FILLERS S. ASBESTOS BRAID This two conductor Rockbestos Elevator Lighting Cable is made up with individual conductors insulated the same as the conductors of the control cable, then cabled with fillers to make a round assembly and covered with a moiiturc-rcsisting and flameproof asbestos braid. Since the cable is comparatively light no steel supporting core is required. Size No. 14 AWG is usually ample for elevator lighting requirements. TABLE VT Number of Conductors Nominal Finished Diameter* Inches No. 14 A.W.G. Approx- Net Weight per M ft. Pounds Standard Shipping Lengths (Feet) Reels 2 .490 in tn Lengths as Specified * Finished diameters given above are average. `A tolerance of plus or minus 5% is necessary due to variations in process of manufacture. RBB 00342 36 ROCKBESTOS 600 VOLT A.V.C. CONTROL CABLE BOILER ROOMS, POWER STATIONS, KILN ROOMS AND OTHER LOCATIONS WHERE CONTROL OR SIGNAL WIRING IS EXPOSED TO HEAT 1, TIN BED C0ffC C0*6IIT0 HCTtO AlICfTOS 1. B. CABLE TABC *. *11-111, lUlllU T. ASBttTOB IRAtP t- COLD* COOED COTTON 1**101 APPLICATIONS Rockbestos Control Cable is designed for use under conditions too severe for control cables with other types of insulation. It is especially recommended for boiler rooms, kiln rooms and steel mills as a substitute for control cable with other insulations which deteriorate rapidly when exposed to the high temperatures prevailing in these places. In addition, it will operate successfully under conditions of oil, grease and corrosive fumes. It is suitable for installation either open or in conduit. CONSTRUCTION The insulation on the individual conductors is Rockbestos A.V.C. construction, as illustrated. The varnished cambric is sealed between the dense, impregnated walls of felted asbestos and the entire insulation is permanently flexible. Moistureproof tape is wrapped over the cabling and this is covered with a tough jacket of braided asbestos yarn finished with special flame, heat and moisture resisting insulating compounds. The special tape wrapping adds to the moisture resisting properties of the cable and prevents the braid-finishing compounds from going through and soiling the colored cotton braids on the indi vidual conductors. CONDUCTORS: Number and Size Standard standings are 19/22 (No. 9 A.W.G.) and 19 25 (No. 12 A.W.G.) but any strand ing can be furnished to order. Can be made in these strandings with any required number of con ductors. CODING Individual wires are cotton braided in colors according to the N.E.M.A, standard color code for multi-conductor cable, which is reproduced below. Special color combinations will be supplied if desired. Conductors 1 2 3 4 5 6 Base Color Black White Red Green Orange Blue Conductors 7 8 9 10 11 12 13 Base Color White Red Green Orange Blue Black Red Tracer Black t i. White " Conductors 14 15 ; 16 ; 17 ; 18 , 19 Base Color Green Blue Black White Orange Blue Tracer White * Red 41 u " FINISH The standard finish of the outer braided asbestos jacke is black -- flame, heat and moisture resisting. A polished white finish may be supplied, however, impregnated with either flame and heat resisting, or flame, heat and moisture resisting compounds. Specify preference. LEAD OR ARMOR COVERING Rockbestos A.V.C. Control Cable can be supplied with lead sheath or armored covering to customer's specifications. Lead sheathing is applied directly over the tape in place of the asbestos braid. Armor can be applied either with or without lead sheath as specified See page 37 for specifications rBB 00343 ROCKBESTOS Specifications for A,VX* CONTROL CABLE Nominal Sizes 9 and 12 A.W.G. 1 to 19 Conductors (See page 36 tor general information) 57 CONSTRUCTION Standard conductor sizes are A.W.G. No 9 19/22 and No. 12 - 19/25 tinned copper, in sulated -with a 10 mil wall of felted and impregnated asbestos, 25 mil wall varnished cambric insert, another 15 mil wall of felted asbestos and a cotton braid colored according to the N.E.M.A. Control Cable Color Code for multi-conductor cables, shown on page 36. The individual conductors are then cabled with jute fillers where necessary, a layer of cable tape is applied and finally an asbestos braid finished with black flameproof and moisture resisting compound. The diameters of the single conductors, taken over the cotton bratd, are: No. 9 -- .265" No. 12 --.230" Number of Conductors **i 3 4 5 6 .7 S 9 10 11 12 13 14 15 16 17 13 19 TABLE MD (NEMA Standard No. 39-54 Table 16) A.W.G. No. 12 - 19/25 Finished Diameter* -- Inches Approx. Net Weight per M feet -- Pounds Standard Shipping Lengths (Feet) -- Keels .290 56 1000 .570 176 500 .605 204 500 .660 249 500 .735 281 500 .795 333 500 .795 343 500 .870 395 500 .935 441 500 1.020 468 500 1.055 516 500 1.055 1.110 539 592 500 500 1.110 6l6 500 1.175 675 500 1.175 699 500 1.245 748 500 1.245 111 500 1.245 795 500 TABLE MT (NEMA Standard No. 39-54 Table 17) A.W.G. No. 9 -19/22 Nominal Finished Diameter* -- Inches Approx. Net Weight per M feet -- Pound* Standard Shipping Lengths (Feet) -------- Keels .330 .645 .685 .755 .830 .905 .905 .990 1.070 1.170 1.205 1.205 1.275 1.275 1.350 1.350 1.430 1.430 1.430 81 233 288 358 412 491 516 555 670 715 790 832 915 948 1047 1100 1168 1210 1253 1000 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 * Finished diameters given above are average. A tolerance of plus or minus S% is necessary due to variations in process of manufacture. ** Single conductor has no cotton braid. Asbestos braid U applied directly over insulation *+* Can be furnished either parallel or twisted. Specify which. . NEMA dielectric test voltage on tingle conductors. 2.5 kilovolts. RBB 00344 J8 ... -- ROCKBESTOS ===== 600 VOLT SOLID A.V.C. SWITCHBOARD WIRE 5. 14 1. SOLID TINNED COSHER CONDUCTOR 3 X. VARNISHED CANIRIC 4 >. FELTED ASStSIOS A. FLAMEPROOF COTTON RRAIP Switchboards which are wired with rubber insulated or slow burning wires are, in the opinion of many engineers, fire hazards that should be eliminated. The use of Rockbestos Switchboard Wire is the cheapest kind of fire-insurance. It is guaranteed not to communicate fire even if it is exposed to contact with an electric arc. Standard construction of this wire consists of a tinned copper conductor, a waif of varnished cambric, a heavy wall of felted asbestos insulation- impregnated with flame and moisture resisting insulating compounds, and a closely woven cotton braid finished with flame resisting compound. This construction complies with the N.E.M.A. Small Wiring for Switchboards Standard. There are several distinct advantages in using Rockbestos Switchboard Wire. It is absolutely fireproof. Regardless of the amount of flame applied to it, it cannot burn and will not transmit flame because of the fireproof wall of felted asbestos lying beneath the cotton braid. Low surface leakage when the wire is damp is another desirable characteristic of Rockbestos Switchboard Wire. Fine appearance can be secured on the completed board because no matter how sharply Rock bestos Switchboard Wire is bent, it will not crack or break open. Even if a bend is made several times in the same place the braid will not crack. The reason for this unusual performance is the felted wail of asbestos which acts like a cushion and "gives" slightly when a sharp bend is made. For this reason, boards can be wired faster than with ordinary all-cambric switchboard wire which must be handled carefully if breaks are to be avoided. The braid, made of the best grades of selected cotton and impregnated with special finishing compounds, is burnished to a smooth finish, free of moisture and dust-collecting fibres or whiskers. On switchboards installed in locations where the wiring is exposed to high temperatures we recommend the use of our Table C, A.V.C. Boiler Room Wire shown on page 25. APPROVED Rockbestos Switchboard Wire, N. E- Code Type AVB is listed by the Underwriters' Laboratories and is approved by Factory Mutual Laboratories, most switchboard manufacturers and many power companies. BRAID COLORS Standard (stock) btaid colors are gray and black. Red, yellow, blue, green, brown and white braids in plain colors or striped patterns can be furnished on special order. Be sure to specify braid color desired on order. This also applies to Switchboard Cable, Hinge Cable and Bus Cable. Size A.W.G. TYPE AVB--TABLE B --600 VOLT SERVICE (NEMA Standard No 39-54 Table 12) Bare Diam. i Nominal Thickness V. c. Nominal Thickness Felled Wall Nominal Finished Diam-* Approx. Net Weight per M Ft. Star dard Shippinj Lengths (F eeO Inches Mils Mils. Inchon Pound? Coils Reels 0000 000 00 0 1 2 4 6 8 10 12 14 16 18 .460 .410 .365 325 .289 .258 .204 .162 .128 .102 .081 .064 .051 .040 40 40 40 40 40 40 40 40 30 30 30 30 30 30 40 .665 800 450 40 .615 650 500 40 .570 530 500 40 . .530 435 500 40 .495 365 1000 40 .465 300 1000 40 .410 210 1000 40 .370 155 1000 20 .270 82 500 1000 20 .245 59 500 1500 20 .225 44 500 2000 20 .205 34 500 2500 20 .195 27 1000 2500 20 .180 23 1000 3000 * Finished diameters given above ire average A Tolerance of plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts, 3.0 for sizes 18 to 8 and 4.0 for 6 to 4/0. RBB 00345 ROCKBESTOS 600 VOLT STRANDED A. V. C. SWITCHBOARD CABLE This wire is identical in all characteristics to our Table B, A.V.C. Switchboard Wire, except that it has a coarse stranded conductor. Many engineers ate of the opinion that the possibility of a broken conductor, due to a nick which may occur when skinning, is far less with a stranded than with a solid conductor. APPROVED Rockbestos A.V.C. Switch-ward Cable, National Electrical Code Type AVB, is listed by the Under writers' Laboratories, and is approved by Factory Mutual Laboratories, most switchboard manufacturers and many power companies. BRAID COLORS Standard (stock) braid colors are gray and black. Red, yellow, blue, green, brown and white braids in plain colors or striped patterns can be furnished on special order. Be sure to specify braid color desired cm order. This also applies to Switchboard Wire, Hinge Cable and Bus Cable. Sice A.W.G. TYPE AVB--TABLE BS--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 11) Stranding Tinned Bare Ittaxn. Nominal Thickneu V. C. Nominal Thickness Felled Wall Nominal Finished DUm>* Approx. Net Weight per MFU Stan dnrd Shipping Lengtha (Fiet> Inched Mila Mils Inches Pounds Coils Reels 0000 19A1055 .528 40 40 .735 835 500 000 19/.O940 .470 40 40 .675 675 500 00 19/.0837 .418 40 40 .625 555 500 0 19/.0745 .373 40 40 .580 460 500 1 19/.0664 .332 40 40 .540 380 1000 2 7/.0974 .292 40 40 .500 315 1000 3 7/.0867 .260 40 40 .465 263 1000 4 7/.0772 .232 40 40 .440 225 1000 6 7/.0612 .184 40 40 .390 163 1000 8 7/.0486 .146 30 20 .290 87 500 1000 10 7/.0385 .116 30 20 .260 63 500 1500 12 7/.0305 .092 30 20 .235 47 500 2000 14 7/.0242 .073 30 20 .215 36 500 2500 16 7/.0193 .058 30 20 .200 28 1000 2500 18 7/.015I .045 30 20 .185 23 1000 3000 Finished diameters given above are average. A tolerance of plus or minus is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts. 3,0 for sizes IS to I and 4.0 for 6 to 4/0. RBB 00346 -40 ROCKBESTOS 600 VOLT FLEXIBLE A. V. C. SWITCHBOARD HINGE CABLE for{ SWITCHBOARDS, PANELBOARDS AND ALSO FOR CONDUIT WIRING WHERE A SMALL O.D. IS REQUIRED I. STRAHOEC TINNED COPPER CONDUCTOR 1. PCCTEO PPREITOS 1. VARNIIHED CAN RRIC A. RCtTEO ARPEETOE A. PUAHEPROOP COTTON RRAID As a companion wire to Rockbestos Switchboard Wire, we offer Rockbestos Hinge Cable, a heat resisting and fireproof, extra flexible wire, developed and used primarily for hinge or jumper connections on swinging panels, connections to swinging synchronizing meters, lamps and the like. It is also used for conduit wiring where the larger diameters of Table; E and L cannot be accommodated. Standard construction employs a flexible stranded, tinned copper conductor, insulated with a felted wall of asbestos, an insert of varnished cambric tape, another wall of felted asbestos, impregnated with flameproof and moisture resisting insulating compounds, and a flameproof cotton braid overall. The diameter of Rockbestos Hinge Cable is about the same as that of Table B Switchboard Wire. The same black, gray and colored finish compounds that are used on Table B wire are also used on Hinge Cable, so that when they are used on the same board they match. Showing application, of Rockbestos Table BH 600 Volt Hinge Cable to swinging instrument panel on a switchboard. approved Rockbestos A.V.C, Hinge Cable, National Electrical Code Type AVB, is listed by the Underwriters' Laboratories and is approved by Factory Mutual Laboratories, most switchboard manufacturers and many power companies. BRAID COLORS The standard braid finishes are gray and black, the same as for Switchboard Wire or Cable and Bus Cable. Red, yellow, blue, green, brown and white braids in plain colors or striped pat terns can be furnished on special order. Be sure to specify braid color desired on order. Sice A.W.Ga TYPE AVB--TABLE BH--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 13) Stranding Tinned Bare DUn. Nominal Thickness First Felted Wall Nominal Thickneu V. C. Inaert Nominal Thickness Second Felled Wall Nominal Finished Diam.* Approx. Net Weight per M Ft. Standard Shippini Lengths (F.*t> Inches Mil* Mild Mil* Inches Pound* Coils Reels 8 133/.OU2 .168 10 105/.01Q .120 12 65/.010 .095 14 41/.010 .075 16 26/.010 .059 18 16/.010 .045 10 10 10 10 10 10 25 15 .310 89 500 1000 25 15 .260 63 500 1500 25 15 -235 43 500 2000 25 15 .215 54 500 2500 25 15 .200 27 1000 2500 25 15 .185 22 1000 3000 * Finished diafttrtcra given Above Are Average. A tolerance of plus or minus Stye i* necessary due lo variations in process of manufacture. NEMA dielectric test voltage 2.S kilovolts on all sizes. RBB 00347 ROCKBESTOS 600 VOLT A.V.C. SWITCHBOARD BUS CABLE 41 1 I, fTRANDID PLAIN COfKI CONDUCTOR t9 t. PCLTID AMCfTOS ** VARNISMCO CAMBRIC I A, PCtTCD AlltlTOI I. FLAMCPROOF COTTON IRAIO As Rodcbestos A.V.C Switchboard Wire and A.V.C Hinge Cable have become more generally used by switchboard builders and power companies, requests have been received for insulated cable with a finish and characteristics matching these wires, to be used for bus work. For this purpose we offer Rodcbestos A.V.C Switchboard Bus Cable, made to the same specifications as A.V.C Power Cable except that instead of a braided asbestos jacket it has a braided cotton jacket, finished in either standard gray or blade to match our Switchboard Wire and Cable or Hinge Cable. White or colored braids also avail able on spedal order. Golors same as Table B on page 38. The use of this family of switchboard wires makes unnecessary the painting of the completed wiring to insure a matching appearance. This cable is National Electrical Code Type AVB, listed by Undecwriters' Laboratories. Size TYPE AVB--TABLE P--600 VQLT SERVICE (NEMA Standard No. 39-54 Table 10 Stranding Bare Diam. Nominal Nominal Nominal Thieknec* ThiekneM Thiekne** First Felted Wall v.c. Inaert Second Felted Wall Nominal Finished Diam.* Approx. Net Weight M^. Standard Shipping Length (Feet) Inches Mila Mil* Mil, Inches Pounds Coil* Reel* 1,000,000 CM 950,000 900,000 850,000 800,000 750,000 700,000 650,000 600,000 550,000 500,000 450,000 400,000 350,000 300,000 250,000 AW.G. 0000 000 00 0 1 2 3 4 5 6 8 10 12 14 16 18 61/.1280 61/.1248 61/.1215 61/. 1180 61/.1145 61/. 1109 61/. 1071 61/. 1032 61/.0992 61/.0950 37/.1162 37/. 1103 37/.1040 37/.0973 37/.0900 37/.0822 19/.1055 19/.0940 19/-0837 19/.0745 19/.0664 7/.0974 7/.0867 7/.0772 7/.0688 7/.0612 7/.0486 7/.0385 7/.0305 7/.0242 7/.0193 7/.0151 1.152 1.123 1.093 1.062 1.031 .998 .964 .929 .893 .855 .814 .772 .728 .681 .630 .575 .528 .470 .418 .373 .332 .292 .260 .232 .206 .184 .146 .116 .092 .073 .058 .045 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 20 20 20 20 20 15 15 15 15 15 15 15 15 15 15 15 40 40 1.435 3524 40 40 1.405 3357 40 40 1.375 3190 40 40 1.345 3023 40 40 1.315 2856 40 40 1.280 2695 40 40 1.245 2522 40 40 1.210 2355 40 40 1.175 2188 40 40 1.135 2021 40 40 1.095 1854 40 40 1.055 1687 40 40 1.010 1522 40 40 .965 1351 40 40 .910 1186 40 40 -855 1019 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 30 30 .735 820 loop 30 30 .675 670 1000 30 30 .625 555 1000 30 30 .580 455 1000 30 30 .540 350 1000 30 15 .460 284 1000 30 15 .425 234 1000 30 15 .395 194 1000 30 15 .370 163 1000 30 15 .345 136 500 1000 30 15 .310 98 500 30 15 .280 71 500 30 15 .255 55 1000 30 15 .235 43 1000 30 15 .220 36 1000 30 15 .205 30 1000 * Finished dimeter* given above are average. A tolerance of plus or minus 4% it necessary due to variations in process of manufactureNEMA dielectric test voltages in kilovolts, 2.5 for sizes IS to S. 3.0 for 6 to 4/0 and 4.0 for 250,000 to 1,000,000 CM. RBB 00348 42 ROCKBESTOS Wired for Insurance against Fires RBB 00349 ROCKBESTOS . Typical Rockbestos Wired Boards 43 Rockbestos Switchboard Wire is uniform in -finish. When future expansion necessitates additional wiring on this board, it will exactly match the existing wiring. Beautiful wiring jobs can be done with Rockbestos Switchboard Wire. RBB 00350 44 ROCKBESTOS 600 VOLT SOLID National Electrical Code Type SNA SWITCHBOARD WIRE iii * I. tout TINN(D COFFl* COHSUCTOI t. tfUTntTie HtlN 1. FILTH ASAIITOS A. FUafFNOflF COTTON SAAID SYNTHETIC RESIN AND FELTED ASBESTOS INSULATION This new Rodebestos Switchboard Wire, insulated with a Seamless synthetic sheath, felted asbestos and a flameproof cotton braid is resistant to beat, flame, oil, grease, corrosive fumes and moisture. It skins easily, takes right angle bends without cracking, and is approved for applications in temperatures ranging up to 194F. The same insulation construction is also available in Rodebestos Type SNA Switchboard Cable with coarse stranded conductor shown on page 4), and Rockbestos Type SNA Flexible Switchboard Hinge Cable with flexible stranded conductors shown on page 46. TWO DIAMETERS Made in two' diameters, "Small" (Table XB) for installations requiring the grouping of many wires of minimum size and weight is limited space, or "Standard" (Table XBO) in the same diameters as Rockbestos A.V.C Switchboard Wire, Table B shown on Page )S, to permit perfect matching with previous wiring and a snug At in cleats, damps and fittings designed for the larger diameter. APPROVED This Wire is National Electrical Code Type SNA and is listed by the Underwriters' Laboratories. BRAID COLORS Standard braid colors are gray and black. Red, yellow, blue, green, brown and white braids in plain colors and striped pat terns can be furnished on special orders. Be sure to specify braid color, size, quantity, type name, and table letters on your order. This also applies to Rodebestos Type SNA Switchboard Cable and Hinge Cable. Size A.W.C. Bare Diem. Inches Nominal Thickscm Synthetic Botin Mila Nominal Thickness Felted Aibeato* Mila Nominal Thickness Cotton Braid Mila Nominal Finished Diam+" Inch** Approx. Net Weight per M fi. Pounds Standard Shipping Length* (Feet) Coil* Reela TYPE SNA--TABLE XB--SMALL DIAMETER--(NEMA Standard, No. 39-54 Table HA) S .128 22.5 20 10 .102 22.5 20 12 .081 22.5 20 14 .064 22.5 20 16 .051 22,5 20 18 .040 22.5 20 17.5 .250 15.0 .220 15.0 .200 15.0 .185 15.0 .170 15.0 .160 75 54 39 30 24 19 500 500 500 500 1000 1000 TYPE SNA--TABLE XBO--STANDARD DIAMETER--(Same diam* t$ our Table B. NEMA Table 12) 8 .128 22.5 27.5 20 .270 1 .102 22.5 27.5 20 .245 79 56 500 500 12 .081 22.5 27.5 20 .225 42 500 14 .064 22.5 27.5 20 .205 31 500 16 .051 22.5 27.5 20 .195 26 1000 18 .040 22.5 27.5 20 .180 21 1000 1 1000 1500 2000 2500 2500 3000 1000 1500 2000 2500 2500 3000 * Finished diameters given above are average. A tolerance of plus or minus S<fo is necessary due to variations in process oi manufacture. tfEMA dielectric teat volt<c 3.0 kilovolts on *11 sizes. RBB 00351 ROCKBESTOS 600 VOLT STRANDED National Electrical Code Type SNA SWITCHBOARD CABLE 45 113 1 I. miun TINNED CONPEN CONDUCTOl I. (TNTHtTlC NI1IH 3. PEIT llliroi 1. PUBEPIOOP COTTON Il.lD SYNTHETIC RESIN AND FELTED ASBESTOS INSULATION A new Rockbestos Switchboard Cable insulated exactly the same as R-ockbestos Type SNA Switchboard Wire, on page 44, but put up with a coarse stranded conductor for those who prefer that type to a solid wire. The laminated insulation, consisting of a seamless synthetic sheath, felted asbestos and flameproof cotton braid, skins easily, takes sharp bends without cracking, is resistant to heat, flame, oil, grease, corrosive fumes and moisture, and is approved for temperatures up to 194F. For matching solid and flexible conductor constructions see Rockbestos Type SNA Switchboard Wire shown on page 44 and Rodcbestos Type SNA Flexible Hinge Cable shown on page 46. TWO DIAMETERS Available in two diameters. "Small" (Table X8S) for applications necessitating the bunching of many wires in confined spaces and where weight reduction is a factor. "Standard" (Table XBSO) in the same diameters as our. Rockbestos A.V.C. Switchboard Cable, Table BS, shown on page 39, to permit matching up present wiring and proper fitting of cleats and clamps designed for the larger diameter. APPROVED This Cable is National Electrical Code Type SNA and is listed by the Underwriters' Laboratories. BRAID COLORS Standard braid colors are gray and black. Red, yellow, blue, green, brown and white braids in plain colors and striped pat terns can be furnished on special orders. Be sure to specify braid color, size, quantity, type name, and table letters on your order. This also applies to Rockbestos Type SNA Switchboard Wire and Hinge Cable. Size Stranding A.W.G. Tinned Bare Diam, Inches Nominal Thickness Synthetic Reein Nominal Thickness Felted Asbestos Nominal Thickness Cotton Braid Mils Mils Mils Nominal Finished Diam** inches Approx. Net 'Weight per M ft Pounds Standard Shipping Lengths (Feet) Coils Reels TYPE SNA--TABLE XBS--SMALL DIAMETER-- (NEMA Standard, No. 39-54 Table 14) 8 7/.0486 .146 22.5 20 17.5 .270 79 500 10 7/.0385 .116 22.5 20 17.5 .240 56 500 12 7/.0305 .092 22.5 20 15.0 .210 41 500 14 7/.0242 .073 22.5 20 15.0 .190 31 500 16 7/.0193 .058 22.5 20 15.0 .175 24 1000 18 7/.0151 .045 22.5 20 15.0 .165 20 1000 TYPE SNA-- TABLE XBSO--STANDARD DIAMETER---(Same diam. as our Table BS, NEMA Table 11) 8 7/.0486 .146 22.5 27.5 20 .290 82 500 10 7/.0385 .116 22.5 27.5 20 .260 59 12 7/.0305 .092 22.5 27.5 20 .235 43 500 ' 14 7/.0242 .073 22.5 27.5 20 .215 33 500 16 7/.0193 .058 22.5 27.5 20 .200 27 1000 18 7/.0151 .045 22.5 27.5 20 .185 21 1000 1000 1500 2000 2500 2500 3000 1000 1500 2000 2500 2500 3000 * Finished diameters given above are average. A tolerance of plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric test voltage 3.0 kilovolts on alt sites. RBB 00352 46 ROCKBESTOS = 600 VOLT FLEXIBLE National Electrical Code Type SNA SWITCHBOARD HINGE CABLE m ii> ' I. STNANOED TINNED COEEC* CONDUCTON z. (THTKETIC EESIN j. EELTEO SSBEfroS 4. ELaMEEtOOE COTTON ENAIO SYNTHETIC RESIN AND FELTED ASBESTOS INSULATION Insulated with a seamless synthetic sheath, felted asbestos and flameproof cotton braid just lilce its companion wires, Rockbcstos Type SNA Switchboard Wire and Cable, this Flexible Rockbestos Type SNA Switchboard Hinge Cable is also resistant to heat, flame, oil, grease, corrosive fumes and moisture. It is ideal for hinge or jumpet connections on swinging panels, connections to swinging synchronizing meters, lamps and for general switchboard and panel work requiring a flexible con ductor. Approved for installations in temperatures ranging to I94F. Match your board wiring by using it with either Rockbestos Type SNA Switchboard Wire shown on page 44 ot Rockbestos Type SNA Switchboard Cable shown on page 45. TWO DIAMETERS You can obtain this cable in Small and standard diameters. 'Small" (Table XBH) for installations requiring the grouping of many wires of minimum size and weight in limited space. "Standard" (Table XBHO) in the same diameters as Rock bestos Switchboard Hinge Cable, Table BH shown on page 40, to permit perfect matching with previous wiring and a snug (it in board fittings designed for the larger diameter. APPROVED This cable is National Electrical Code Type SNA and is listed by the Underwriters' Laboratories. BRAID COLORS Standard braid colors are gray and black. Red, yellow, blue, green, brown and white braids in plain colors and striped pat terns can be furnished on special orders. Be sure to specify braid color, sire, quantity, type name, and table letters on your order. This also applies to Rockbestos Type SNA Switchboard Wire and Cable. Sire A.W.G. 1 Stranding Tinned | Bure DUm. Inches Nominal Nominal Nominal Thicluiew Thickness Thickness Synthetic Felted Colton Rain Asbestos Braid Mil* Mils Mils Nominal Finished Diam.* Inches Approx. Net Weight per M ft. Pounds Standard Shipping Lengths (Feel) Coils Keeis TYPE SNA--TABLE XBH--SMALL DIAMETER--(NEMA Standard. No. 39-54 Table IS) 8 133/-0112 .168 22.5 20 17.5 .300 85 500 10 105/.010 .120 22.5 20 17.5 .250 58 500 12 65/.010 .095 22.5 20 15.0 .220 42 500 14 41/.010 .075 22.5 20 15.0 .200 31 500 16 26/.01Q .059 22.5 20 15.0 .185 25 1000 18 16/.010 .045 22.5 20 15.0 .170 21 1000 TYPE SNA--TABLE XBHO--STANDARD DIAMETER--{Same diam as our Table BH, NEMA Table 13} 8 133/-0112 .168 10 105/.010 .120 12 65/.010 .095 14 41/.010 .075 16 26/.010 .059 18 16/.0I0 .045 22.5 22.5 22.5 22.5 22.5 22,5 25 25 25 25 25 25 20 .310 87 500 20 .260 60 500 20 .235 44 500 20 .215 33 500 20 200 27 1000 20 .185 22 1000 1000 1500 2000 2500 2500 3000 1000 1500 2000 2500 2500 3000 * Finished diameters given Above are avenge. A tolerance of plus or minus }% is necessary due to variations in process of manufacture NEMA dielectric test voltage 3.0 kilovolts on all sizes. RBB 00353 ROCKBESTOS 47 300 VOLT ALL - ASBESTOS RHEOSTAT AND STOVE WIRES ELECTRIC RANGES. LABORATORY OVENS, COOKERS. HOTPLATES. STOVES. AND MANY OTHER ELECTRICAL HEATING DEVICES. 9* with Solid Plain Copper, Nickel or Monel Conductor! s Eft***'** with Stranded Plain Copper, Nickel or Monel Conductors a a3ssk?,. An aJI-asbestos stove wire designed for use in electric ranges, laboratory ovens, cookers, hotplates, and many other electrical heating devices requiting a heat resistant wire of this type for service voltages of 300 or lower. Ample dielectric strength is provided by the dense, seamless, impregnated wall of felted asbestos which i$ applied to con ductors of either solid plain copper, nickel or monel. A tough, rugged asbestos braid of 43 mils thickness, tightly woven over the impregnated felted asbestos wall, supplies mechanical strength and additional resistance to heat and flame, or heat, flame and moisture, depending upon the impregnating compound used, "Hi- temp'* or "Moistemp." Hi-temp impregnated insulation is heat and flame resistant, whereas insulation impregnated with Moistemp compound is heat, flame and moisture resistant. Be sure to specify your preference for either "Hi-temp" or "Moi$* temp" on your order; also the table letters indicating the type of conductor you prefer, and the braid color desired. Plain cop per, nickel and monel conductors are standard, but tinned or plated copper conductors and alloy conductors other than nickel or monel can be supplied on special order. Black, white, red, blue or grey are the standard braid finishes. Other colored braids can be processed on special order. For the same construction types for 600 volt service see pages 48 and 50. Site A.W.G* 4 5 6 8 10 12 14 16 18 SOLID--Specify Table AC for Copper--Table AM for Monel--Table AN for Nickel Bare Diam. lncbn .204 .182 .162 .128 .102 .081 .064 .Oil .040 Nominal Thickness Felted Wall Mila 40 40 40 31 31 31 31 31 31 3! E,, i B1 ! 12*1 ! C? ! : e I 1 !. 1 i .5 g ' \ Nominal Finished Diameter* Indie* .375 .355 .335 .280 .255 .235 220 .205 -195 Approx. Net Weight Per M Ft. Pounds 177 148 124 78 56 43 33 27 23 Standard Shipping Length* (F.set) Coils 500 500 1000 1000 1000 1000 1000 Reel* 1000 1000 1000 1000 2000 2000 2000 2000 3000 STRANDED--Specify Table ACS for Copper--Table AMS for Monel--Table ANS for Nickel Size A.W.C. 4 5 6 8 10 12 14 16 18 Stranding 7/.0772 7/.0688 7/.0612 7/.0486 7/.0385 7/.0305 7/.0242 7/.0193 7/.0151 Bare Diam. Inches .232 .206 .184 .146 .116 .092 .073 .058 .045 Nominal Thieknei* Felted Wall Mils 40 40 40 31 3L 31 31 31 31 ] e fi V N it V 55 o< b t ifi *t Finished diameters given above are average. A tolcrjnce of plus or minus Nominal Finished Diameter* Approx. Net Weight Per M Ft* Standard Shipping Lengths (Feet) Inche* Pounds Coil* .405 183 .380 152 .355 128 500 .300 82 500 .270 59 1000 .245 44 1000 .225 35 1000 .210 28 1000 .200 23 1000 is necessary due to varianons in process of manufacture. Reels 1000 1000 1000 1000 2000 2000 2000 2000 3000 RBB 00354 48 -- ROCKBESTOS " 600 VOLT ALL-ASBESTOS RHEOSTAT WIRE GRID JUMPER CONNECTIONS CONNECTIONS FROM GRIDS TO FACEPLATES SWITCHBOARD WIRING IN HOT LOCATIONS ELEVATOR AND LOCOMOTIVE CONTROL PANEL WIRING AND GENERAL OPEN WIRING EXPOSED TO HEAT, FUMES, FIRE HAZARD, OIL OR GREASE i* * 1. lout FUMN CCFfH C0F0UCT0K i, pelted Atitrros i, umroi maio Asbestos rheostat wire was originally produced by put ting two or three braids of asbestos yarn on the wire and finishing each braid with compound. This had several disadvantages. For example, its moisture resistance was very low due to the comparatively open covering so that many engineers considered that spaced wiring was neces sary in order to prevent possible leakage under damp conditions. The labor cost of doing this type of wiring is high. Another disadvantage -- though really more of an annoyance --r was that in working with this wire a good deal of the compound flaked off and continued to do so after the installation was completed, spoiling the appear ance of an otherwise nice job. The Roekbestos development of the felted and im pregnated wall of asbestos insulation was a distinct im provement. Instead of a relatively open covering on the wire, the asbestos is applied in the form of a homogene ous insulation. The dielectric strength is thereby increased. Next, the impregnating compound is an integral part of the insulating wall, not painted on after the wall is formed. That means that, through repeated heating and cooling cycles, the compound can never fall away from the asbestos. The dielectric strength and moisture resist ance of Roekbestos Rheostat Wire are, therefore, practic ally constant. And there is none of the usual flaking when working with Roekbestos Rheostat Wire and Cable, with cither white or black braid. Because of its comparatively high moisture resistance Roekbestos Rheostat Wire may be bunch-wired with per fect safety. The illustrations on page 49 show several examples of rheostats bunch-wired -with Roekbestos Rheostat Wire and Cable in several of the country's large power stations. Roekbestos Rheostat Wire is recommended for all open work at 600 volts or less where wiring will be subject to heat, fumes, oil, grease ot fite hazard. The insulation is generally impregnated with black compound, but the braid finish can be either black or white. Specify which. Colors may be furnished on special otder, N, E. Code Type AI, listed by Underwriters' Lab. Size A.W.C. 0000 000 00 0 1 2 3 4 5 6 8 10 12 14 16 18 TYPE AI--TABLE A --600 VOLT SERVICE <NEMA Standard No. 39-54 Table 20} Bare Biam. Nominal cr. N .Nomina! Felted Finished Well Diam.* Approx. Net Weight per M Ft, standard Shipping Lengths (Feet) Inches .460 .410 .365 -325 .289 .258 .229 .204 .182 .162 .128 .102 .081 .064 .051 .040 Mils 60 60 60 60 60 40 40 40 40 40 31 31 31 31 31 31 C Inches b< L* .670 g .620 .575 c .535 < .500 cc .430 sc .400 w .375 o .355 u, .335 .280 V*. .255 isl .235 '* .220 .205 H -195 Pounds 761 620 All 388 316 248 202 167 138 121 79 58 42 34 28 24 Colls 500 500 1000 1000 1000 1000 1000 Reels 450 500 500 500 500 1000 1000 1000 1000 1000 1000 1500 1500 2000 2000 2000 * `shed diameter* given above are avenge- A tolerance of plus Of minus 5# is necessary due to variations in process of manufacture. NEMA dielectric test voltage 1.5 kilovolts on all si*es. RBB 00355 ROCKBESTOS Typical Rockbestos Rheostat Wiring Installations 49 Labor costs are high on jobs like these. Make the labor investment but once by using Rockbestos Rheostat Wire -- "the wire with permanent insulation." (Tables A and R) RBB 00356 50 -- ROCKBESTOS === 600 VOLT ALL-ASBESTOS POWER AND RHEOSTAT CABLE M SAME USES AS TABLE "A" WIRE WHERE STRANDED CONDUCTOR IS REQUIRED ii i, iiiueib plain coppfr coiouctoi i l. rtirte mieimi i. asiestos braid This cable is National Electrical Code Type AI, listed by the Underwriters' Laboratories. Standard braid finishes arc black or white, colors on special order. TYPE Al--TABLE R--600 VOLT SERVICE (NEMA Standard No 59-54 Table 2t) Nominal Thitkneu Stee Stranding Bare Diant. Faked Wall Nominal Finished Dianas* Approx. Net Weight per M Ft. Stan dard Shipping Length* <F ret) Inches Mil* Indict Pound* Coils Reels 1,000,000 CM 950,000 900,000 850,000 800,000 750,000 700,000 650,000 600,000 550,000 500,000 450,000 400,000 550,000 300,000 250,000 A.W.G. 0000 000 00 0 1 2 3 4 5 6 S 10 12 14 16 18 61/. 1280 61/.1248 61/.I215 61/.1180 61/.1145 61/. 1109 61/.1071 61/. 1032 61/.0992 61/.0950 37/.1162 37/.U03 37/.1040 37/.0973 37/.0900 37/.0822 19/-1055 19/-0940 19/.0837 19/.0745 I9/.0664 7/.0974 7/.0S67 7/.0772 7/.0688 7/.0612 7/.0486 7/.0385 7/.0305 7/.0242 7/.0193 7/.0151 1.152 1.123 1.093 1.062 1.031 .998 .964 .929 .893 .855 .814 .772 .728 .681 .630 ,575 .528 .470 .418 .373 .332 .292 ,260 .232 .206 .184 .146 .116 .092 .073 .058 .045 120 1.485 120 1.455 120 So 1.425 120 120 >M<9 1.395 1.365 120 1.330 120 1.295 120 1.260 120 LVO 1.225 120 1.185 120 Q 1.145 120 < 1.105 120 A 1.060 120 CC 1.015 120 .960 120 z> o .905 90 b. .800 90 </> .740 90 u .690 90 Z. .645 90 u .605 60 .505 60 .470 60 .445 60 .420 60 .395 40 .320 40 .290 40 .265 40 .245 40 .230 40 .215 3456 3291 3126 2961 2796 2631 2470 2307 2142 1977 1812 1647 1482 1317 1219 982 819 672 555 462 388 274 227 188 157 132 87 63 48 38 31 26 500 500 500 1000 1000 1000 1000 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 1000 1000 1000 100D 1000 1000 1000 1000 1000 1000 * ffiven above are average. A tolerance of pin* or minus S% it necessary due to variations in proetss of mttvufattuTe NEMA. dielectric mi vohags- i.s kilovolts on all sizes. RBB 00357 ROCKBESTOS 600 VOLT FLEXIBLE ALL-ASBESTOS APPARATUS CABLE ( SAME USES AS RECOMMENDED FOR TABLE "a" AND *'R" WIRES WHERE A FLEXIBLE CONDUCTOR IS REQUIRED 51 Is 1 PLniBLC TIMMCO COMC* COMOUCTO* * . flLTCO A**E*TOS 4. AMCSTOS *M> This cable has the sami general uses as the solid and coarse stranded Rheostat Wires shown on pages 48 and 30. It is recommended wherever a flexible lead must be installed under high temperature conditions and where there will be no great amount of moisture. Although we recommend the A.V.C Motor Lead and Apparatus Cable shown on page 33 for general motor use, some steel mills use this flexible stranded All-Asbestos cable where leads will be exposed only to high temperatures and where the possibility of moisture is remote. This cable will not deteriorate under constant high temperatures. It positively will not burn. It will be found useful, therefore, for open work, such as jumper leads, etc., at voltages of 600 or less, under condi tions of heat and fire hazard. Neither grease nor oil can rot this cable nor cause it to bloom or swell. This cable is National Electrical Code Type AI, listed by Underwriters' Laboratories. The insulation is usually supplied impregnated with black compound but the braid finish can be either white or black. Specify which. Colored finishes on special order. TYPE AI--TABLE RF--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 34) Sice 500,000 CM 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 1 2 3 4 5 6 8 10 12 14 16 18 Stranding Tinned 427/.0342 427/.0325 427/.O306 427/.0286 427/.0265 427/.0242 259/-0286 259/.0255 259/.0227 259/.0202 259/.0180 I33/.0224 133/.0199 133/-0177 133/.0158 133/.0141 I33/.0112 I05/.010 65/.010 41/010 26/.0I0 16/.010 1 Bare Diazn. Incite* .923 .878 .826 .772 .716 .653 .600 .536 .477 .424 .378 .336 .299 .266 .237 .212 .168 .120 .095 .075 .059 .045 Nominal Thickness Felted WaU Mils 120 120 120 120 120 120 Vu) < os 90 90 3 90 e 90 < 90 SS 60 ce 60 Ic2 60 & 60 G 60 hi o 40 40 u 40 z 40 40 E 40 Nominal Finished Diatn.* Inches 1.255 1.210 1.160 1.105 1.050 .985 .870 .810 .750 .695 .650 .550 .510 .480 .450 -425 .340 .290 .265 .245 .230 .215 Approx. Net Weight per M Ft. Pounds 1910 1735 1560 1385 1211 1035 860 708 581 482 407 290 240 203 166 140 92 65 49 38 31 27 Stan dard Shipping r Length* <F eet) Coil* 500 500 500 1000 1000 1000 1000 Reels 500 500 500 500 500 500 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 * S'vn above are averafe. A tolerance of plus or minua 5% ia neceaaary due to variationa in procett of manufacture. Ni&M A dielectric tot voltage 1.5 kilevotu on all tizes. 1 RBB 00358 52 ===== ROCKBESTOS 300 VOLT EXTRA FLEXIBLE ALL-ASBESTOS APPARATUS CABLE MOTION PICTURE PROJECTORS, SUN ARCS, EFFECT MACHINES, M HIGH TEMPERATURE LIGHTING FIXTURES, SPOT LIGHTS, ETC AHOPE LAY ITtAN DCO ALAI tOAACA COHDuCTOA 1. FCLTrO AfmiOI a. AIIIS70S *1D This cable was originally developed to meet a specific application in the lamp houses of motion picture projectors and in sun-arc lamps. Hence its frequently used name "Motion Picture Cable." This is a more flexible version of the Table RF cable shown on page 51. Where a 259 stranding is used in Table RF siie 2/0, for example, this cable has a stranding of 5292 -- the most flexible cable it is possible to design. In standard construction both the felted asbestos insulation and the asbestos braid are impreg nated with standard white heat-resisting compound. Either the insulation or the braid, or both, can be impregnated with moisture-resisting compound but with the sacrifice of some flexibility. Rockbcstos Extra Flexible All-Asbestos Apparatus Cable in dry places, such as lamp houses, arc lamps, etc., can be operated under continuous high temperatures yet will stay permanently flexible. It positively cannot support combustion even when subjected to direct contact with an electric arc. This cable is National Electrical Code Type A, listed by the Underwriters' Laboratories. NOTE: This extra flexible stranding can also be supplied with A.V.C. insulation as shown in Table L illustration on page 33. Size A.W.G. 0000 000 00 0 1 2 4 6 8 10 12 14 16 18 TYPE A--TABLE W --300 VOLT SERVICE (NEMA Standard No. 39 54 Table 30) Slrandint Bare Diant, Inches Nominal Thickness Felted Wall Mil* i <efa Nominal Finished Diam.* Inches Carrying Capacity in Amps, Approx. Net Weight per M ft. Pounds Standard Shipping Lengths Coils 8464/36 6713/36 5292/36 4214/36 3332/36 2646/36 1666/36 1050/36 661/36 413/36 259/36 105/34 65/34 41/34 .675 .600 .550 .47C .425 .365 .280 -215 .165 .130 .102 .077 .061 .047 55 55 s 55 55 55 40 t 40 3 0 40 31 wC 31 E 31 31 31 'z p 31 S-'S .800 .750 .670 .625 .535 .450 .385 .320 .285 .255 .230 .215 .200 325 815 150 275 660 150 225 535 150 200 430 200 150 340 200 125 260 200 90 175 250 70 125 500 50 80 500 35 55 500 30 39 1000 20 30 1000 10 24 1000 6 20 1000 Finiahed diameters given above are average. A tolerance of plus or minus KEMA dielectric teat voltage 1.0 kilovolt for all is necessary due to variations in procevs o? manutacture. RBB 00359 ===== ROCKBESTOS ----- 300 VOLT HEAT RESISTING FIXTURE WIRES LIGHTING FIXTURES, SMALL MOTOR LEADS, WIRING OF ELECTRIC RANGES, {ELECTRIFIED OFFICE EQUIPMENT, RADIO APPARATUS, MINIATURE SWITCHBOARDS NATIONAL ELECTRICAL CODE TYPE AF -- PLAIN (NO BRAID) W"i. White Asbestos Insulation Black Asbestos Insulation NATIONAL ELECTRICAL CODE TYPE AF--BRAIDED 5J Solid Color Braid Solid Color Braid with Marker Electrical maintenance men are frequently called on to BRAIDED type wires should alao be used in pairs, the repair burned out lighting fixtures and to make up and wire with the marker thread going in the grounded side of install new fixtures in plants, offices and public buildings. the circuit and connecting to screw shell socket terminals. To assist them in using the proper type of wire to meet Code regulations we publish this data on Rockbestos ORDERING INFORMATION Fixture Wires and Flexible Cords. Standard Packing: Both Plain and Braided Fixture CODE REGULATION Article 410, Section 4159 of the National Electrical Code stipulates that fixtures operating at not more than 300 volta Wire arc put up on metal spools and in coils, and where quantity warrants (5000`to 10,000 ft. depending on size! on factory reels. between conductors, which may be subject to temperatures Concur*ent Winding: When Plain Black and a Plain is excess of 104* Fn (90* C.) must be wired with Type AF White Wire, for example, will be used together it is con fixture wire, or Type AFC, AFPO or AFPD flexible cord. venient to have both wires wound on the same spool or reel. See page S4 for cords. To get this package specify ^concurrently wound." The Hi APPROVED BY UNDERWRITERS' LABORATORIES Rockbestos Fixture Wires are approved by the Under writers' Laboratories for lighting fixture use and bear tbeir labels. Insulated as they are with asbestos, the basic heatresisting and fireproof material, Rockbestos Fixture Wires are ideal for lighting fixtures because at socket tempera tures (frequently as high as 350 F. in modem flush type same applies to braided wires. A concurrently wound spool of 1000 ft. of plain single conductor wire contains 500 ft. of black and 500 ft. of white wire wound together and so stated on the tag or spool label. Stock Colors and Braids: Rockbestos PLAIN Fixture Wire is carried in stock in Black and White in the sizes listed in the table below. fixtures) the insulation presents no fire hazard whatever nor In addition to the Black and White, Rockbestos PLAIN will it dry out and become hard and brittle. Furthermore, Fixture Wire can also be supplied in Red, Blue, Green, this insulation has higu moisture resisting character Yellow. Gray, Brown, etc., on special order at no extra cost. istics, an important factor where fixtures hang in damp atmospheres. Rockbestos BRAIDED Fixture Wire is available in solid colors of Mahogany Brown, Brush Brass and Black in both HOW TO SELECT For fixtures where the wiring is concealed in stems or brackets, the PLAIN type wire is recommended. It has no braid. Made in Black and White to indicate polarity. When wiring is exposed, such as on a chain pendant glazed cotton and rayon. These colors are also available with marker threads in the braids; Red marker in the Mahogany Brown and Black braids and Olive Green marker in the Brush Brass braid. In ordering specify; fixture, the BRAIDED wire is recommended. Made in A.W.G. size and stranding. solid color braids and solid color with marker thread to indicate polarity. Whether Plain type or Braided type. If Plain, whether half the order Black, other half CODE METHOD OF WIRING White finish, or all one color. The PLAIN type wire should be used in pairs, one White If Braided type, whether half order solid color braid, and one Black. The White wire should be placed in the other half with marker or all one way. grounded side of the circuit and connected to the screw Color of Braid shell terminals of the sockets. Whether Rayon or Cotton Braid. Size A.W.G. TYPE AF--TABLE FS --300 VOLT SERVICE (NEMA Standard No. 39-54 Table 50) Minimum Ave. Wall Finished Stranding Thickness Diam.* Inaul. Plain Ave. Finished Diam.* Cotton Covered Ave, Finished Duun,* Rayon Covered Approximate Net Weight per M feet Pound* Standard Shipping Lengths (Feet) Inches Inches Inches Inchea Plain Cotton Rayon Spools Coils 10* * 105/30 .040 .205 .230 .220 47 51 50 250 500 10 105/30 .047 220 .245 -235 51 55 53 250 500 12** 65/30 .040 .180 .205 195 33 37 36 250 500 12 65/30 .047 .195 .220 .210 36 40 38 250 500 14 41/30 .031 .140 .165 .155 20 23 22 500 1000 16 26/30 .031 .125 .150 .140 15 17 16 500 1000 18 16/30 031 .110 .135 -125 11 13 12 500 1000 * Finished diameters given shove are average- A tolerance of plus or minus i% is necessary due to variations in process of manufacture. * Not approved by the Undvwritert' Laboratories as fixture -wire. RBB 00360 54 ROCKBESTOS HEAT 300 VOLT RESISTING FLEXIBLE CORDS PENDANT CORD LIGHTING FIXTURES, INSTRUMENT LEADS, GLUE POTS AND OTHER SMALL HEATING DEVICES TWISTED PAIR TABLE FA tlAXfO COTTON 0* ftATON SMID N. E. CODE TYPE AFC DUPLEX--TABLE FR Ignition Lacquer Finish PLAIN COMtlt CONDUCTOR AfiVSTM Ot RATON Alt N, E. CODE TYPE AFPD PLAIN COPPCft eoxouetOR ClAJED COTTON (CttlTIOM LACQUtt FINISH N. E4 CODE TYPE AFPD r0u"o" AlltSTOS OR RATQK RRAtO N. E. CODE TYPE AFPD These cords are useful for lighting pendants and for apparatus and test leads where * non-deteriorating heat resisting cord is required. . CODE REGULATION Article 410, Section 4139 of the National Electrical Code stipulates chat fixtures operating at not more than 300 volts be tween conductors, which may be subjected to temperatures in excess of 194 *F. (90 *C), must be wired with Type AF fixture wire, or Type AFC AFPO or AFPD flexible cord. See page 53 for fixture wire. APPROVED BY UNDERWRITERS' LABORATORIES Rockbestos Heat Resisting Flexible Cords are approved by the Underwriters' Laboratories for lighting fixture wiring under the type symbols shown beneath the illustrations. APPLICATIONS In lamp sockets the usual temperature rise is from 30 to 2004 C. above ambient depending upon the lamp wattage, type of shade and other factors. Experience has shown that with rubber fixture cord in use, the insulation of the wires in and immediately above the socket dries up and becomes brittle until finally, with the repeated movement of the pendant* due to opera tion of the chain puli socket or from vibration, the insulation just above the socket cracks and crumbles, permitting the wires to short circuit. in consideration of this condition, therefore, it is especially im portant to use genuinely heat-resisting cord whose insulation will not dry UP *od thus crack and eventually cause shore circuits. Rockbestos Duplex or Twisted Pair Cord is ideal for this purpose. The Twisted Pair and Triplex Cords have similar uses to the Duplex- The Triplex is for lighting fixtures having pendant outlet-switches, two filament lamp fixtures, three heat appliances and leads for apparatusi meters and testing. POLARITY MARKING In the Twisted Pair Cord the marker thread in the braid of one wire indicates polarity. In Duplex and Triplex Cords the insula tion of the individual conductors is impregnated in different colors for the same purpose. CODE METHOD OF WIRING The wire with the marker thread in the Twisted Pair Cord and the white wire in the Duplex Cord should be connected to the grounded side of the circuit and to the screw shell terminals of the socket. STOCK COLORS AND BRAIDS Twisted Pair: Mahogany Brown with Red Tracer, Black with Red Tracer, Brush Brass with Olive Green Tracer in both rayon and glued cotton. Duplex: Black glazed cotton only. Triplex: Black glazed cotton only. Other colors and rayon braids can be supplied on special order. IN ORDERING Specify A.V.G. size, stranding (see tables) whether twisted pair, duplex or triplex, color of braid and whether glazed cotton or rayon. Size A.W.G. Stranding Approx. Finished Diameter* inches Cotton Braid Rayon Braid Tahle Table Table Tahle Table FR FC FA FR FC Approx. Net Weight per M Feet Pounds Cotton Braid Rayon Braid Table Table Table Table Table Table FA FR FC FA FR FC Standard Shipping Lengths (Feet) Spool, Coils 4> I 10** 10 12** 12 14 16 18 105/30 .460 .435 .470 .440 .425 .460 104 102 151 101 100 148 105 '30 .490 .465 .500 .470 .455 '.490 111 109 161 108 107 158 65/30 .410 -385 .415 .390 .375 ,405 74 72 106 72 70 104 65 '30 .440 .415 .445 .420 .405 .435 80 78 115 78 76 113 41 .'30 .330 .305 .330 .310 .295 .320 45 45 66 44 43 64 26/30 .300 .275 .295 .280 .265 .285 33 33 49 32 31 47 16/30 .270 .245 .265 .250 .235 .255 25 25 36 24 23 34 500 500 500 500 250 500 250 500 250 500 * Finished diameters given above are average. A tolctanct of plus ot minus S% is necessary due to variations in process of manufacture. * Not approved by the Underwriters* Laboratories as flexible cord. RBB 00361 ROCKBESTOS 300 VOLT ALL-ASBESTOS FLEXIBLE CORDS PENDANT DROP LIGHTING FIXTURES, LOCOMOTIVES, BLUE PRINT MACHINES, FLOODLIGHTS, APPARATUS LEADS, ETC. TWO CONDUCTOR 55 IZ 3 1. ST.ANDED PLAIN COPPCM ZOHOUCTtlft rcLTto muni AtfcEttSS ..AID Rockbestos All-Asbestos Cord was originally de veloped for cab and gauge lighting circuits of steam locomotives to replace rubber insulated cords which failed to stand up under heat and vibration. Because of this use it is widely known in the railroad field as Cab Cord. There is no rubber whatever in this construction. Instead the basis of the insulation is asbestos, applied to the wire by our unique insulating process and im pregnated and compressed to form the felted asbestos wall. It meets a demand for a heat-resisting, fire proof, permanently flexible cord which will operate without failure under exposure to heat, corrosive fumes, oil, grease or fire hazard. Because it will not dry and crack under heat, it makes an ideal heavy duty cord for pendant lighting fixtures located in high temperature areas in steel mills, boiler rooms, kilns, glass plants, etc. It is also used for leads in heat-developing apparatus and for the wiring of blueprint machines, flood and spot lights and other high wattage units which develop temperatures that are ruinous to other types of insula ted wires. For applications in which moisture may be encoun tered, use Rockbestos A.V.C. Flexible Cord described on page 56. Both types can be supplied with polarized conductors if so desired. If a perfectly round construc tion is desired it can be made up with fillers on special order at a slight additional cost. RAILROADS NOTE: For lighting circuits in locomotives equipped with train control apparatus we recommend using Rockbestos A.V.C. Flexible Cord because of its higher insulation resistance. 300 VOLT SERVICE Table CA--Two Conductor (NEMA Standard No. 39-54 Table 25) Table CAC--Three Conductor Size A.W.G. 10 12 14 16 18 Stranding 105/30 65/30 41/30 26/30 16/30 Nominal Thickness Felted Wall Mil's Nominal Thickness Asbestos Braid Mils 31 45 31 45 31 45 31 45 31 45 Two Conductor -- Table CA Nomina) Finished Diam.* Approx. Net Weight PerM Ft. Standard Shipping Lengths (Coils) Inches Pounds Feet .460 121 250 . .400 84 500 .350 63 500 .320 50 500 .295 41 500 Three Conductor -- Table CAC Nominal Finished Diam.* Approx. Net Weight Per M Ft. Standard Shipping Lengths (Coils) Inches Pounds Feet .485 168 250 .430 118 250 .385 85 500 .350 65 500 .320 51 500 * Finished diameter* given above are average. A tolerance of plus or minus 59J- is necessary due to variations in process of manufacture. HEMA dielectric test voltage 1-0 kilovolt on all sites. RBB 00362 56 = ROCKBESTOS --" 600 VOLT A. V. C. FLEXIBLE CORDS for f EXTENSION CORDS EXPOSED TO HEAT, OIL AND GREASE IN STEEL MILLS, BOILER ROOMS, LOCOMOTIVES, REFINERIES, ETC. ALSO FOR PENDANT DROP LIGHTING FIXTURES AND FLOODLIGHTS EXPOSED TO HEAT AND MOISTURE TWO CONDUCTOR THREE CONDUCTOR Wr i j j < 1, TINNED CONDUCTOR *. FCITED AtiMTO* S. VAa*l*ND CANIftlC A, FtLTCD ASBESTOS S. ASSCSTOS IRAID Rockbestos A.V.C. Flexible Cord was a natural development of the All-Asbestos Cab Cord and be cause of its much higher insulation resistance found a special application in railroad locomotives equipped with train control apparatus. This rugged cold has ample moisture resistance in its combination of thoroughly impregnated felted asbestos and the embedded high-dielectric insert which makes up the familiar A.V.C. insulation. It has a heavy asbestos braid, the same heat-resistant and fireproof qualities as the All-Asbestos type and is practically impervious to deterioration which ordinari ly results from exposure to corrosive fumes or con tact with oil or grease. Rockbestos A.V.C. Flexible Cord should be used for the wiring of industrial type pendant lighting fixtures in hot locations where high humidity or mois ture is prevalent. It is also the correct type of cord to use in heat-developing electrical equipment and high wattage lighting units that may be operated where moisture exists. Approved for these uses, with polarized conductors, by the Underwriters' Labora tories under a 300 volt rating as Style V flexible cord. If so desired specify on order. For general extension use where cord may be dragged over masonry and rough floors nothing is better than a good rubber Jacketed cord but in places where it is exposed to heat, oil and grease such cords often fail electrically before they wear out mechanic ally. In such service Rockbestos A.V.C. Flexible Cord frequently lasts longer. For high dry temperatures use Rockbestos All Asbestos Flexible Cord described on page 55, Both cords can be supplied with polarized conductors if so ordered. If a perfectly round construction is desired it can be made with fillers at a slight additional cost. 600 VOLT SERVICE Table CV -- Two Conductor (NEMA Standard No. 39-54 Table 26) Table CVC -- Three Conductor Size A.W.G, Nominal Nominal Thickness Nominal Thickness Stranding First Thickness Second Asbestos Tinned Felted V* c. Felted Braid Wall Insert Wall Thickness Two Conductor -- Table CV Three Conductor -- Table CVC Nominal Finished Diam.* Approx. Net Weight Per M Ft. Standard Shipping Lengths (Coilii) Nominal Finished Diam.* Approx. Net Weight PerM Ft. Standard Shipping Lengths (Coils) Mils Mils Mils Mils Inches Pounds Feet Inches Pounds Feet 10 105/30 10 25 15 45 .515 134 250 .565 185 250 12 65/30 10 25 15 45 .470 101 500 .510 136 250 14 41/30 10 25 15 45 .430 79 500 .465 104 500 16 26/30 10 25 15 45 .390 64 500 .430 84 500 18 16/30 10 25 15 45 .360 41 500 .400 70 500 * Finished diameters given above are average. A tolerance of plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric test voltage 2,$ kilovolts on all sims. RBB 00363 ROCKBESTOS ^... A.V.C. SIGNAL WIRE -- continued from page 58 59 Coarse Stranding TABLE SC--600 VOLT SERVICE--TABLE SF Flexible Stranding Sice A.W.G* Stranding Tinned Bare Diam. Nominal Nominal Thickn't Nominal Approx* Standard Thickn'R Felled Braid Finished Net Vi* Shipping Lengths V. C. Wall Thickness Duun** per M Ft* (Feet) Coarse Flexible Inches Milt Milt Mila Inches Pounds Coils Reels 0000 19/. 105 5 37/.0756 .528 40 40 000 19/.0940 37/.0673 .470 40 40 00 19/.08J7 37/.0600 .418 40 40 0 19/.0745 37/.0534 .373 40 40 1 19/-0664 37/.0476 .332 40 40 2 7/.0974- 19/.0591 .292 40 40 3 7/.0867 19/.0526 .260 40 40 4 7/.0772 19/.0469 .232 40 40 5 7/.0688 19/.0417 .206 40 40 6 7/.0612 19/.0372 .184 40 40 8 7/.0486 19/.0295 .146 30 25 10 7/.0385 19/.0234 .116 30 25 12 7/.0305 19/0185 .092 30 25 14 7/.0242 19/.0147 .073 30 25 16 7/.0193 19/-0117 .058 30 25 18 7/.0151 19/.0092 .045 30 25 27 .745 862 500 27 .685 700 500 27 .635 578 500 27 .590 481 500 27 .550 400 1000 27 .510 334 1000 27 .475 285 1000 27 .450 242 1000 27 .425 208 1000 27 .400 178 1000 25 -310 96 500 1000 25 .280 71 500 1000 25 .255 54 500 2000 25 .235 41 500 2000 25 .220 33 500 2000 25 .205 27 500 2500 Finished diameter* given above are average. A tolerance of plus or minui 5% it necessary due to variations in process of manufacture- 600 VOLT A. V. C. HEADLIGHT WIRE t / LOCOMOTIVE LIGHTING AND CONTROL CIRCUITS TOY' ' \ IN WHICH A SINGLE CONDUCTOR WIRE IS PREFERRED. 113 1. STRAHDrO TINNED COPPER CONDUCTOR 1. VARRIEHED CAMBRIC 4 3. PELTED A3IEST03 4. FLAMEPROOF COTTON RRAIO For certain applications on railway locomotives a single conductor wire is more convenient to use than duplex A.V.C. Flexible Cord construction shown on page 56, Rockbestos A.V.C. Headlight Wire has the same characteristics that are to be found in other A.V.C. con structions -- ample dielectric strength and insulation resistance, absolutely fireproof and highly resistant to heat and moisture, oil, grease and corrosive fumes. Under high temperatures the insulation will not flow or bloom to cause plugging of pipes or conduit. Recommended for all locomotive lighting circuits and similar applications where a single conductor wire of small diameter is preferred. TABLE T -- 600 VOLT SERVICE (NEMA Standard No. 39-54 Table 29) Size A.W.G. Stranding Tinned Nominal Thickness V. Ct Mils Nominal Thickness Felted Wall Mih Nominal Finished Diameter* Inches Approx. Net Weight Per M Ft. Pound* Stan dard Shipping Lengths (Fct) Coils Reels 10 19/.0234 25 12 19/.0185 25 14 19/.0147 25 16 19/.0117 25 18 19/.0092 25 25 .255 59 500 1500 25 .230 44 500 2000 25 .210 34 500 2500 25 .195 28 1000 2500 25 .185 24 1000 3000 * Finished diameters given above are average. A tolerance of plus or minus 595- is necessary due to variations in process of manufacture. NEMA dielectric test voltage 2.5 kilovolts on all sizes. RBB 00364 60 ROCKBESTOS A.V.C. AND ALL-ASBESTOS PYROMETER WIRE All-Asbestos Type Single Conductor -- Table YS a A.V.C. Type Single Cendudar -- Table YC Two Conductor -- Table YA Two Conductor -- Table YV nun uiuroi 4. AsurTOf eajue In brick plants, steel mills and petroleum refineries pyrometer lead wire, variously known as com pensating lead or extension wire, has always been a source of considerable trouble. Rubber insulated wire was generally used, either with or without a lead sheath, or with a so- called "slow-burning" covering consisting of two or three cotton braids finished with flameproof paint. These constructions were unsatisfactory because heat dried out 'and cracked the rubber and oil caused it to bloom and rot, setting up short circuit possibilities and permitting the picking up of stray ground potentials and admission of moisture which affected the accuracy of the readings. The lead sheath construction took cate of moisture and protected the rubber from oil and fumes but proved to be a liability when fires involving pyrometer circuits melted the lead and rubber. This frequently plugged the conduit to such an extent that it was often impossible to remove the wire, and conduit as well as wire had to be replaced. When engineers sought to avoid this trouble by using "slow-burning" insulation they found that it had no moisture resistance and that it took up moisture which was occasionally present in the conduit with the result that the readings were thrown off. Thermocouples or "fire-ends" have also presented a problem as those in which the wire is insu lated with lava beads require considerable time for assembly, are fragile and slow in delivery. In another type the conductor is tediously wound with asbestos yarn and then dipped several times in silicate of soda to produce a poor makeshift for an homogenous wall of insulation. Obviously, these applications require a wire that is not only heat and moisture resisting but fireproof as well, and that is what we offer in Rockbestos Pyrometer Wire. It will not grow hard or brittle iior crack under temperatures that would be destructive to other types of insulation, neither will it tot or bloom even if exposed constantly to oil, oil fumes or grease. If fires involve the circuits there will be no plugging of conduit and in many cases the wire will con tinue to operate properly. These qualities are inherent because the insulation is made from asbestos, the basic heat-resisting and fireproof material. TWO TYPES OF INSULATION Ve offer Rockbestos Pyrometer insulation in two types the same as we apply to cable. If preferred either construction may be had with lacquer finished cotton braid instead of an asbestos braid. HOW TO SELECT THE PROPER TYPE If the conduits in which the leads are located are all indoors with no very Jong runs, and generally subjected only to heat, oil or fumes and no more than casual moisture, the All-Asbc*tos insulation will be satisfactory. If the conduit run is both outside and inside heavy condensation is likely and in chit case, and whenever you are doubtful, we recommend the A. V, C insulation. Varnished cambric embedded in the felted asbestos wall of the A. V. C. insulation gives the extra dielec tric strength necessary under moisture conditions. For thermocouples the use of single conductor All-Asbestos Pyrometer Wire is invariably dictated by the high tempera tures to which they are exposed but for applications where the thermocouple is extended to form a lead the A. V. C. type is recommended because of the possibility of excessive humidity or moisture. HOW TO ORDER We can supply All-Asbestos or A. V. C. insulated single conductor pyrometer wire with solid or stranded iron, or solid or stranded copper conductors. These insulations are also applied to conductors furnished by the customer. *See last para graph. ^ We also offer the parallel construction illustrated above but can furnish a duplex construction if the conductors are stranded. Both are coveted with an asbestos braid and polarity identification can be had without extra charge by means of either colored asbestos insulation or a marker thread. There are so many combinations of solid or stranded Conductors and dissimilar metals that it is impossible to tabulate them but we will quote prices on any combination on request. Let us know liee, whether solid or stranded, enameled or plain copper, what, combination of copper, iron or alloy conductors you are using, and whether you want to use two single conductors or to combine both under one braid and we will draw up specifications and quote. NOTE: When specifications call for an alloy conductor it must be furnished by the customer as we can not accept the responsibility of supplying alloy conductor having the proper thermoelectric characteristics. RBB 00365 ROCKBESTOS THERMOSTAT CONTROL WIRE LOT VOLTAGE SIGNAL AND INTERCOMMUNICATING SYSTEMS, AUTOMATIC FUEL BURNER CONTROL, ETC. <1 t. nnitn csrrn eoaoueTQt t. pouaitto piltid uititoi i Usama putio (TitL apso* op tmncd coppia an*ts The wiring of the control systems of early automatic coal and oil burning installations formerly gave frequent trouble. To get short runs it was often installed close to, or actually resting on, hot water or steam pipes and the heat naturally deteriorated ordinary insulated wire to the point where trouble fre quently occurred. Cases are on record where serious damage has resulted from faulty control wiring. Abrasion, too, has always been a source of trouble when fishing ordinary control wire, particularly in buildings already up. Sharp comers, brickwork, plaster, protruding nails and rough beams all tend to damage the insulation. ' With these conditions in mind, and with the wide adoption of automatic fuel burning systems, a large manufacturer of heat control apparatus asked us to design a wire which would be heatproof and abrasion resisting -- and Rockbestos Thermostat Control Wire was the result. Rockbestos Thermostat Control Wire is very strong mechanically because of its firm felted asbestos insulation arid its rugged, abrasion resisting spiral steel armor or metal braid. It is heatproof and will not dry out under heat or with age. It eliminates fire hazard because it cannot burn. Neither can rats damage it as has been known to happen occasionally with unprotected wires. Where resistance to abrasion or pro tection against rodents is not essential, a cotton braid may be specified instead of metallic sheath. With these advantages it is of value for Control and intercommunicating systems or for any similar application where a low voltage, multi-conductor cable is required. Rockbestos Thermostat Control Wire is designed to be used at low voltages, usually fed by a stepdown transformer. For this application the 12l/2 mil wall insulation is generally used. However, some users prefer the 25 mil insulation thickness for its added mechanical and dielectric strength. Where this cable is to be used direct on 115 volt circuits a minimum insulation thickness of 31 mils is required. Data for cables with all three insulations is listed in _he table below. Note-. The braid covering tnctuioned in the fourth paragraph is an optional suggestion. Size A.T.G. 16 16 16 16 18 18 18 18 20 20 20 20 TABLE TC Nominal Wall HikIumnm Ftakbcd Diameter** (fnehea) Number of Conductors Foe Low Vehaae Service 115 Volt Senfee 1234 MU O. D. 25 Mil O.D. 31 Mil O. D. 2 .175 -225 .265 3 .185 .240 .285 4 .210 .270 .315 5 .235 .305 .355 2 .155 .205 .245 3 .165 .215 .260 4 .180 .240 .290 5 .205 .275 .325 2 .135 .185 .225 3 .145 .200 .240 4 .160 .220 .270 5 .180 .250 .300 Approximate Net Weight* per M Feet (Pound*) 115 Voh For Low Voltage Service Service 1216 Mil 25 Mil 31 Mil 35 45 47 46 56 62 58 69 79 69 84 97 26 34 37 34 43 49 43 53 61 50 64 75 21 28 31 26 35 40 32 42 50 38 51 61 Standard Shipping Leoftb (Feet) Coils 500 500 500 500 500 500 500 500 500 500 500 500 * Finished diameter* given above are average. A tolerance of plu* or minus 59o it necessary due to variations in process of manufacture. RBB 00366 62 ===== ROCKBESTOS ~ 125 VOLT A. C. SECONDARY NETWORK CABLE ti I, ITMRDID PLAID COPPER COKOUCTOI 1 CPCCIAL ROCElCCTOR IHRULATIOR 1. L1AL. DNCATH Rockbestos Low Voltage A.C. Secondary Network Under the worst fault conditions, whether single, Cable was developed exclusively for secondary network two, or three-phase, loose or solid, Rockbestos A.C. distribution systems but several utility companies have Secondary Network Cable will dear cleanly and quickly extended its use, where regulations permit, to include without burning or generating toxic, inflammable or service installations in which limited space, high ambi explosive gases. It also definitely eliminates the smoke ent temperature and emergency overloads must be nuisance because ndffier fhe insulation, which is pure considered. asbestos, nor the impregnating compounds will burn. The problem of power companies operating second ary network distribution systems is to distribute power at high currents and low voltage. The circuits are tied in solid without the usual protective devices. When a fault occurs in a cable, which may happen from any one of a number of causes, the successful operation of the network system depends upon the cable clearing itself. Obviously there should be sufficient transformer capacity to permit of this taking place. Another advantage is positive resistance to deteriora tion normally resulting from age or heat. Under over loads, when the cables become warm, there need be no fear of failure as the insulation will remain intact up to the melting point of copper. Practically, however, the melting point of the solder joints and the C9pper tem perature at which regulation difficulties would be experienced, determine the load the cable can carry. If, instead of clearing at once, the insulation of the cable bums, produces smoke, generates toxic, inflam JOINT TAPE: m mable and explosive gases, experience has repeatedly We have developed an asbestos tape especially for shown that the arc is supported by the gas and smoke this new secondary network cable. It has similar char so that large amounts of cable and manhole equipment acteristics to the new cable insulation so that its use is are sometimes destroyed. More important, the smoke- consistent with the use of Rockbestos A.C Secondary fiiled manholes delay ttouble crews in making repairs Network Cable. Made in %" width, foil wrapped, 5 and restoring service. yards to the package. Size 500,000 CM 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 1 2 3 4 Stranding 37/. 1162 37/.1103 37/.1040 37/.0973 37/.0900 37/.0822 19/.1055 19/.0940 19/.0837 19/.0745 19/.0664 7/.0974 7/.0867 7/.0772 Bare Diam. Inches .814 .772 .728 .681 .630 .575 .528 .470 .418 .373 .332 .292 .260 .232 TABLE UL Nominal Insulation Thickness Nominal Diameter over Insulation Thickness of Lead Sheath Mils Inches Inches Nominal Diameter over Lead* Inches Approx* Weight with Lead Maximum Manufac turing Lengths Pounds (Feet) 93 1.000 93 .958 93 .914 93 .867 93 .816 93 .761 7/64 6/64 6/64 6/64 6/64 6/64 1.220 1.150 1.105 1.055 1.005 .950 3640 3130 2895 2665 2425 2175 1500 1500 2000 2500 2500 3000 93 .714 6/64 .905 1980 3000 93 .656 6/64 .845 1745 3000 93 .604 6/64 .795 1555 3000 93 .559 6/64 .750 1390 3500 93 .518 6/64 .710 1255 4000 93 .478 6/64 .670 1140 4000 93 .446. 6/64 .635 1045 4000 93 .418 6/64 .610 980 4000 * Finished diameters given above are average. A tolerance c{ plus or minus is necessary due to variations in process ol manulacture. RBB 00367 ROCKBESTOS FIREPROOF LOW VOLTAGE VAULT CABLE 63 111 * RTRAHOEB FLAIK COFFER CONOUCT0R X ARECEAL ROCERESTOE IMtUCETlOH 4 1, STHTRETIC WALL A REEEETOS RRAIO Rockbestos low voltage vault cable was designed to provide a heatproof, fireproof and moistureproof cable for bus installation in underground vaults of low voltage distribution systems. The typical instal lation is between transformers and network protectors, mounted on porcelain insulators without phase to phase or phase to ground contact. The special insulation on Rockbestos Vault Cable is like the insulation in Rodcbestos Secondary Net work Cable -- impregnated pure asbestos which is unaffected by heat or age and positively will not burn. In addition, to seal the insulation against the moisture so often encountered in underground vaults, a thin layer of waterproof synthetic tape material is applied over the asbestos insulation, under the asbestos braid. With extreme overheating or actual fault conditions the only smoke or gas generated is from the decomposition of the synthetic waterproof tape layer, and is of such small quantity, due to the thin layer, that it is negligible and does not interfere with prompt access to the vault for service restoration. Supplied with standard concentric stranding or segmental conductor. TABLE UV Sue Stranding 2,000,000 CM 1,500,000 1,000,000 750,000 500,000 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 127/.1255 91/. 1284 61/. 1280 61/.1109 37/. 1162 37/. 1103 37/. 1040 37/.0973 37/.0900 37/.0822 19/.1055 19/-0940 19/.0837 19/.0745 Bare Diem. Inchea 1.632 1.412 1.152 .998 .814 .772 .728 .681 .630 .575 .528 .470 .418 .373 Nominal Thiekneaa Felted Wall Mil. Nominal Thickneu Synthetic Wall Mila 155 20 155 20 120 20 120 20 93 20 93 20 93 20 93 20 93 20 93 20 93 20 93 20 93 20 93 20 1 7i & -c s 0 c m l XV X Nominal FinUbed Diiun* Inches 2.075 1.855 1.525 1.370 1.130 1.090 1.045 1.000 .950 .895 Approx. Net Weight Per M Ft. Pounds Maximum Manufac turing Length* Feet 6838 5209 3482 2667 1796 1631 1467 1301 1135 967 500 500 1000 1000 1500 1500 2000 2500 2500 3000 .845 ,790 .735 .690 838 3000 689 3000 570 3000 474 3500 * Finished diameter* given above are average* A tolerance of p!u* or minus 5% is necestafy due to variation* in process of manufacture. RBB 00368 <4 ROCKBESTOS INDUSTRIAL HEATING CABLE the even distribution of MMILD HEAT OVER. A LARGE AREA \ LUD IHKATH SPECIAL ALLOT Witt Originally developed to provide a controllable heat source for forcing early plants in hotbeds, millions of feet of this heating cable is put in operation each spring by market gar deners, florists and amateur horticulturists. . Industry too, has discovered that this unique hearing cable can be used in many applications to better advantage and more economically than spot or strip heaters. Pliable, easily bent and formed, it can be threaded through apertures, made to conform with irregular shaped objects and wound around pipe to accomplish the even distribution of mild heat over a large area. We can only touch on a few typical applications but they may give you an idea of the varied uses that can be made of the cable. In many plants the cable is used as a safeguard against frozen water pipes making unnecessary the rearrangement of piping or costly replacement. Waste pipes, gutters and down spouts can also be kept free and clear of ice. Paint, soap, varnish, ink, chocolate, molasses and sulphur, to name a few, can be kept at fluid temperatures, insuring against irregular flow and clogged conveyor pipes. Wet pipe sprinkler systems located in unheated areas are easily heated and kept at non-freezing temperatures that assure positive operation. #sS Steel mills use it around roll-necks to prevent the lubri cant from congealing and a utilities engineer wound the cable around the pipes connecting the conservator tank to the main tank of a conservator type transformer, covered it with lag ging, and eliminated congealing of oil and freezing of con densate. The resistance of Rockbestos Industrial Heating Cable is approximately 0.5 ohms per foot. In order to keep the temperature low enough so that the insulation will not be injured, the generally recommended length across 115 volts, is 60 feet. However, installations as short as 40 feet have been made with no evident harm to the insulation resulting from the higher temperature. The recommended wattage limit is 7 watts per foot. At 115 volts a 60 ft. length is rated at 400 watts, 6.66 watts per ft. Across 2 50 volts use a 120 ft. length for the same current value and double the total wattage. When installed permanently, Rockbestos Industrial Heating Cable should be covered by some form of heat insu lating material for operating economy. Precise temperature control is established by means of a low priced thermostat available from a number of manufacturers. We will be glad to refer you to several. ' The characteristics of this particular heating cable ate given simply because it is a standard product and usually available from stock. We are equipped, however, to make up heating cable with special characteristics to your specifications. (We have literature describing and illuatratint induttriel and veil heating application*. Tell ua which you are interested in.) Size A,W*G, Conductor Approx* Resistance Ohms per ft. TABLE LH Bare Diam. Nominal Thiekneaa Felted Wall Indie*. Mil* Lead Sheath Inches Nominal Finished Diaxn.* Inches Approx. Net Weight per M Ft. Pound* Standard Shipping Lengths (Feet) 19 Nickel Chrome .5015 .036 40 4/64 .245 60 and 120 198 and in bulk on reds * Finished diameters riven above are average- A tolerance of plus or minus J% is Accessary due to variations in process of manufacture. RBB 00369 ROCKBESTOS Permanently Insulated WIRES, CABLES AND CORDS not included in this bulletin are ROCKBESTOS FIREWALL AVIATION WIRE ROCKBESTOS FIREWALL RADIO HOOKUP WIRE and NUMEROUS SEMI-SPECIAL AND SPECIAL CONSTRUCTIONS THAT HAVE BEEN DEVELOPED FOR THE MANUFACTURERS OF: AIRCRAFT EQUIPMENT MARITIME EQUIPMENT AUTOMOTIVE EQUIPMENT MINING MACHINERY ELECTRICAL APPARATUS RADIO APPARATUS ELECTRONIC CONTROLS RAILROAD EQUIPMENT LIGHTING FIXTURES STEEL MILL MACHINERY SWITCHGEAR And For The Maintenance of Equipment and Power. Lighting and Control Circuits Exposed to Severe Operating Conditions in Electrical Power Plants and Miscellaneous Industries. If a solution to your puzzling wiring problems is suggested by the listing above, write to us or the district office nearest you, fjtrnisbtng ns much detail as possible and we will be glad to make a recommendation. ROCKBESTOS PRODUCTS CORPORATION P. O. Drawer 1102, New Haven 4, Connecticut, U. S. A, DISTRICT SALES OFFICES NEW YORK 17, 5942 Grand Central Terminal LOS ANGELES n, 520 Easr Third St. CLEVELAND 1159 Union Commerce Bldg. CHICAGO J, 1449 Field Bldg. PORTLAND -i. ORE. 209 S. Vi'. Fir>: Avc. BUFFALO a, 5m Ellicot: Nj. Bldg. PITTSBURGH 19, 2137 Kopr*r' Bldg. ST. LOUIS 1, Railway Exchange Bldg. SAN FRANCISCO 3, 567 Ninth Si. SEATTLE 4, l"U First Avc.. So. Manufactured in Canada by Phillips Electrical Work>. Ltd- and distributed by Automatic Electric {Canada) Limited. -$4 King Street, "ft'etc. Toronto Montreal--Brockville--Ottawa--Hamilton*--Winnipeg--Regina--Edmontun--Vancouver Manufactured in England and distributed by fin:i>h Insulated Cables Ltd,, PrcsCot. Lancashire Bulletin No. 10-E. 5M. E*45 Printed in United States of America RBB 00370 ROCKBESTOS CALCULATOR FOR CABLE SIZE-CIRCUIT LENGTH-LOAD-VOLTAGE DROP FOR ANY TYPE OF 600 VOLT INSULATED CONDUCTOR IN IRON CONDUIT REGARDLESS OF TYPE OF CIRCUIT--BOOM TEMPERATURE --NUMBER OF CONDUCTORS OR POWER FACTOR. BASED ON 3--I/C CABLES IN A CONDUIT--ROOM TEMPERATURE 30*C.--100% POWER FACTOR--BALANCED CIRCUITS. factor TO FIND CABLE SIZE REQUIRED FOR ANY LOAD--CIRCUIT LENGTH--VOLTAGE DROP Divide known Circuit Length by value of Vk in table for type of circuit and Circuit Voltage to find FACTOR M. Follow line for FACTOR M thus found until it intersects the line for the known Circuit Amperes. From this point READ the cable siie. If this point is between two vertical cable size lines, the line to the right of the point should be the cable lire. Example: Find size cable required to carry SO Amperes on a 3-wire single phase 120-volts branch circuit. 240 ft. long and to have 1% Voltage Drop. From table, value of Vk is 1.2. Then FACTOR M= =200. Reading from Chart, the FACTOR M LINE tor 200 intersects the SO Ampere line between wire sizes 0 and 00; therefore a 00 cable would be required. TO FIND CIRCUIT LENGTH FOR ANY LOAD--CABLE SIZE--VOLTAGE DROP From chart find FACTOR M from the intersection of the known cable size and load in amperes. Multiply the FACTOR M thus found by the value Vk found in the table for the type of circuit and circuit voltage to get the Circuit Length. Example: Find Circuit Length permissible for 1% voltage drop on a 2-wire 110-volt circuit of #8 conductors with a load of 25 Amperes. From chart, the line lor a #8 conductor intersects the 25 Ampere line to give a FACTOR M value of 57. Value of Vk from table for a 2-wire 110-volt circuit and 1% voltage drop is .550. Then the permissible circuit length is 57 x .550=31.3 feet. RBB 00371 TO FIND MAXIMUM LOAD FOB ANY CABLE SIZE--CffiCUIT LENGTH--VOLTAGE DBOP \; Divide known Circuit Length by value of Vk in table lor type of circuit and circuit voltage to find FACTOB ft Follow' Una 'for FACTOR M thui iound until it intersects the line for the known cable eixe and read the permissible Ampere Load. Example: Find the maximum load in atnpane that con be carried on a three-phaie 440-volt circuit using #2 conductor for a circuit length oi 600 feet and not exceeding 3% Voltage Drop. From the note under the table, the value el Vk must be increased due to 3% voltage drop permissible by Therefore, the value of Vk will be 2.54 the value shown in the table for a three phase 440-volt circuit multiplied by 3 or 2.54 x 3=7.62. FACTOR M with therefore, bey^y =78.7. Following FACTOB M line for 78.7 until it intersects the line for a #2 conductor the maximum Ampere Load is found to be 70 Ampere*. TO FIND THE VOLTAGE DBOP FOR ANY LOAD--CABLE SEE-CIRCUIT LENGTH , . " v From chart, find FACTOR M from the intersection of the known oable size and load in amperee. Divide the Circuit Length by FACTOB M thus iound and then divide this result by the value oi k (not Vk) shown in the table for the type of circuit. This gives the voltage drop in volts. To find the per cent regulation, divide the voltage drop thus found by the system voltage. . Example: Find the voltage drop for a 2-wire 115-volt circuit of #2 conductor with a load of 20 amperes and a circuit length of 150 feet. From the chart, FACTOB M tor the intersection of #2 conductor and 20 amperes is 295. Then dividing the circuit length of 150 feet by FACTOR M thus found gives =.508. Then dividing this by value of k for a 2-wire circuit which is .5 gives ^fiS.=l,016 volts drop. TO FIND ABOVE VALUES FOH OTHER BOOM TEMPERATURES The current rating of conductors are reduced when operating at a room temperature above 30 *C. also if more thorn three conductor* are in the conduit. So in using chart, be sure current value used or iound does not exceed the value permitted by the National Electrical Code for these condition*. The accuracy of the chart may be affected as much as five percent when using these reduced current rating*, but will usually give a voltage drop higher rather than lower, so it is therefore conservative. FOB OTHER POWER FACTORS THAN 100% POWER FACTORS Divide the value of k or Vk shown in the table by the POWER FACTOR Correction Factor given in the table af Current Ratings. Actually a separate table oi Rower Factor Correction Factors for conductors sire 0 and larger should be given for each type af insulation. The maximum degree of error iar 1000 HCM by using the single table below is only about 10 percent and a* the table gives a higher rather than lower voltage drop for insulated conductors having high copper temperature ratings, it is on the safe side. ALLOWABLE CURRENT CARRYING CAPACITIES OF CONDUCTORS IN AMPERES Based on National Electrical Code For Not More Than Three Conductors in Boosway or Cable ________ (Based on Boom Temperature of 30*C. 86*F.)________ Paper Size AWG MCM Rubber Type RW Type R Type * Synthetic tTM_sn Latex Type HPT Type RP Rubber Type RHT Type RH Synthetic Type SNA A&estos Var-Cam. Type V Asbestos* Var-Cam. Type AVA AVI - POWER FACTOR CORRECTION FACTORS 90* 80* n% 60* 14 15 18 22 23 28 12 20 23 27 29 36 10 25 3! 37 38 47 e 35 41 4$ 50 60 6 45 54 65 68 SO .91 .81 .72 .62 .91 .82 .73 .62 .92 .82 .74 .63 .75 .65 .93 .86 .77 .67 5 52 63 75 78 94 4 60 72 36 88 107 3* 69 63 99 104 121 2 60 96 IIS 118 137 1 91 110 131 138 I6J .95 .87 .79 .70 .96 .89 .81 .72 . .96 .91 .83 .74 i.00 .93 .86 .77 1.02 .96 .89 .81 0 105 127 [51 157 ISC 00 120 145 173 184 217 000 138 166 199 209 243 0000 160 193 230 237 275 l.lt 1.09 1.05 .99 1.15 t.15 1.12 1.07 1.20 1.22 1.20 1.16 1.28 I.S2 1.32 1.29 250 177 213 255 272 315 300 J98 238 265 299 347 350 216 260 311 325 392 400 233 281 336 361 418 500 265 319 382 404 466 1.33 1.40 1.41 1,40 1.41 1.50 1.53 1.54 1.48 1.60 1.65 , 1.67 1.54 1.66 1.74 1.77 1.66 1.85 1.94 2.00 600 293 353 422 453 525 700 320 385 461 488 562 750 330 398 475 502 582 800 340 410 490 514 600 900 360 434 519 $66 . . . U79 1.90 1.95 2.00 2.10 2.02 2.19 2.24 2.31 2.45 2.15 2.34 2.40 2.88 2.64 2.24 2.45 2.52 2.61 2.80 1000 377 455 543 533 68 [ 2.18 2.57 2.79 2.95 1250 1500 409 434 493 522 589 $2$ 643 698 784 construction note 175j 451 $44 650 733 Alt Voltage Drop* bated on resistance of conductor at actual 2000 463 558 666 774 '839 temperature oi conductor tor each value oi Load Amperee. C F.CORRECTION FACTOR FOR ROOM TEMPERATURES OVER 30*C. Example: No. 2 Type R Rubber ha* a copper temperature of 50*C. 40 104 .71 .82 .66 .90 ,94 with an 80-Ampere load and the resistance of the con- 50 122 .00 .58 .76 .80 ,87 ductor at this temperature is 01B1 ohm* per 1000 ft. 60 (40 .00 .58 .67 .79 For a load of 50 Ampere*, the copper temperature is 70 156 * * .35 .52 40 *C. and it* reeiitcmce .0174 ohms per 1000 ft. 60 176 90 194 100 2(2 . . . vve .30 .61 The reactance value* were calculated on a spacing of the outside ... *. .50 diameter of the cable plus 10%, and for cable sizes 0 and ess ... larger, the reactance value was increated 50% to compensate for the proximity effect and effect of the iron conduit. ROCKBESTOS PRODUCTS CORPORATION NEW HAVEN CONNECTICUT RBB 00372 ED. HEERY, SALESMAN>BY-MAIL for ROCKBESTOS PRODUCTS CORPORATION NEW HAVEN, CONNECTICUT asks would this novel Heating Cable he useful to You1 Rockbeato* Jnduttrial Heating Cable 4/64* Waterproof Lead Sheath Rockbeitoe Felted Atbeetoa incuiation Special Alloy Reaiatance Heating Conductor "LTERE'S a heating device all wrapped up in a small pliable cable that you can bend -* -t and form to fit 'most anything. Better than that, it distributes a mild even heat over almost any area you might want to cover, which makes it much more adaptable for many jobs than spot, space or strip heaters. This heating cable was developed primarily as a substitute heat source for manure for starting early plants from seed in hotbeds, but it proved so useful a device that we're now selling more footage for industrial purposes than for the original application. You simply take a standard 60 or 120 ft. length of this Rockbestos Heating Cable, wrap it around a drain pipe or a valve, put some lagging over it to conserve the heat, hook it up to a 115 or 220 volt line and there you have it. You can control it manually or with an inexpensive thermostat. But wait! Instead of my describing this, I'm just going to ask you to read excerpts from some of our sales reports. They'll give you the idea and may suggest ways of using the cable to prevent pipes from freezing in the winter and to keep sluggish fluids flowing. . . . "sprinkler pipes in a wet pipe system located in unheated portions of the plant are kept at non freezing temperatures with its even application of mild beat" . . . .. . "soap is kept at the right consistency to flow smoothly through the conveyor pipes, by winding them with cable sufficient to keep them at the correct heat" ... . . . "candy manufacturers are using it because it keeps chocolate pipes flowing steadily" ... / RBB 00373 ROCKBESTOS INDUST . . . "Mr. --------------- , engineer for the com pany, an amateur movie photographer, coiled the heating cable in his developing tanks to maintain the solution at proper temperature." NOTE: In heating liquids, engineers have told us that strip heaters are sometimes unsuitable because the solution becomes too hot immedi ately at the heater, sometimes to the extent of breaking down chemically. The heating cable overcomes this weakness because of its low (about 7) wattage per foot. . . . "water and sewerage pipes in certain sec tions of the plant were wound with heating cable and covered with lagging for retention of heat. This has prevented freeze-ups and elim inated costly maintenance under the most ad verse conditions" .. . ... "a roundhouse foreman on the------------Railroad got disturbed when he discovered his men putting in a lot of time around a barrel of journal grease. When they told him that the cold weather stiffened the grease so much that it was almost impossible to remove it, he got busy. Fresh barrels had a 60 ft. coil of heating cable sunk in the grease before it got hard . . . now it's always `pretty soft' "... . . . "Nursery men and florists use heating cable instead of manure. The cable gives a ther mostatically controlled minimum temperature, impossible to get with manure, resulting in faster and more uniform growth, a greater per centage of rooted plants and a sturdier root system. In cold frames it gives definite assurance against freezing plants" ... . . . "and you can even shovel snow with itl" . . , Industrial Heating Cable was embedded 1" below the surface of a concrete walk, laid out to a 40 watt per sq. ft. consumption. This provided an estimated temperature rise of about 20, which eliminated snow and prevented ice formation at temperatures as low as 15 F. above zero. ---AND A FEW SUGG RBB 00374 v. 's ... "a steel mill uses it around roll-necks to prevent the lubricant from congealing" . . . . . . "one of the biggest paint and varnish manufacturers in this territory uses it to keep production flowing smoothly through the con veyor pipes" . . . . . . An engineer in the --------------- - Chemical Co. said "this line is used to convey molten sul phur and is wrapped with Rockbestos Heating Cable between pipe and insulation (see arrows below) to prevent the sulphur from cooling in transit. At present we are using four of these installations of substantially the same design and construction to good advantage. The tempera ture of the sulphur is controlled by means of a thermostat used with the heating cable" .. . . . . "This picture will show you how one of the electric utilities engineers used our heating cable. A conservator type transformer acted up in cold weather when the oil congealed and then there was always the possibility that the con densate would freeze. He got around it by wind ing the cable around the pipes connecting the conservator tank to the main tank (see arrows above) and covering it with lagging. Now he has an all-weather installation" . . . . . . "low temperatures and condensation caused the pneumatic tube messenger system of a large packing house to get balky. A few ap plications of our heating cable around the trouble spots eliminated these annoying un scheduled stops" . . . . . . "this manufacturer makes his positive dry print developing machine turn out better prints by building into it a steady, evenly dif fused heat with our Industrial Heating Cable." . . . "Molasses doesn't run slow in January in this feed mill. Four 60 ft. lengths of cable coiled around suction pump inlets develop 1600 watts and make pumping easy" . . . LSTIONS FOR ITS USE RBB 00375 . . . "The--------------- Power Co. tried compressed air and other methods of keeping the trash racks in their- hydro dams free from needle ice without complete success until we suggested our heat ing cable installed in. pipes. It worked so well last year that they intend to adopt the method as standard and make similar installations in all their dams this winter." (Reference on request.) ... "a big forge plant uses it on oil feeder lines to keep fuel oil fluid enough to permit quick starting of furnaces" - . . , . . "an oil company uses it to prevent freezing of 6' water valves" . . . We could tell you more, but this is one of those things that goes on and on. so we can only hope that these few stories of widely diversified types of installations will suggest ways in which you may use Rockbestos Industrial Heating Cable to prevent freezeups, reduce maintenance expense, supply an even and controlled heat where it is needed, or to keep liquid production flowing more smoothly. And you can do it for pennies because the cable costs only 5 to 7 cents a foot in small quantities! INSTALLATION INFORMATION Standard heating cable stocked in 60 ft. and 120 ft. lengths; 60 ft. for 115 volt circuits. 120 ' ft. for 230 volt circuits. Also supplied in continuous pieces of any length. Resistance approximately 1/2 ohm per foot. Current consumption approximately 3.8 amps for 60 ft. lengths on 115 volts or a 120 ft. length on 230 volts. Wattage developed approximately 400 for a 60 ft. length on 115 volts; 800 for a 120 ft. length on 230 volts. The 60 ft. and 120 ft. lengths can be shortened if necessary, but the recommended limit is approximately 7 watts per foot, the temperature naturally varying with particular conditions of installation such as how fast heat is taken off cable, etc. Our Engineering Dept, will be glad to advise in your particular heating problem. CONSTRUCTION SPECIFICATIONS Size: No. 19 A.W.G. Conductor: Nickel Chromium Bare Diameter: .036" Resistance: .5015 ohms per ft. Pelted asbestos insulation: Lead sheath: Finished diameter: Net weight per M feet: .040" 4/64" thick . .245" 198 lbs. Approx. 2000 ft. and over $.05 per ft. ($51.50 per M) NET PRICES 600 to 1999 ft. $.05 Vi per ft. ($55.10 per M) 240 to 599 ft. $.06'/4 per ft. ($62.50 per M) Less than 240 ft. $.07 per ft. ($69.80 per M) Why not check up on what you have to protect from freeze-ups or keep fluid, and make out your requisition for a trial order of this heating cable? Specify "Rockbestos No. 19 Industrial Heating Cable" and mark your order for the attention of our "Mail Sales Dept." Thanks for your time--and I'll hope to see your order in the next few days. Cordially yours, RINTCD IN U- 5 A Rockbestos Products Corporation RBB 00376