Document ymZQR4Q3Kmkq703Jx6y7kXB94

A. I. A. File No. 3 1 -C -6 7 2 also N o. 31-C-679 ------------------------------- --------------------------------- 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. I. A. File No. J l c-672 also No. Jl-c-679 Catalog No. 10-E March 1, 1939 RBB 00309 * t I world's largest factory derated exclusirtly to the manufacture of permanently insulated wiret, cables and 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. Rockbestos has developed its own time-tested impregnating compounds and finishes with heat, flame 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 Ail-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 Cord..................... 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 Volt A.V.C................................... 33 LH Heating Cable, lead sheathed industrial type................................ 64 MD-MT ML Multi-conductor Control Cable........... ..................................................... 36-37 Mining able, 600 Volt A.V.C.................................................................. 34 P Switchboard Bus able, 600 Volt A.V.C.................................................... 41 R Rheostat and Power able, 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 able................................................................................. 63 VK Elevator Control able............................................................................... 35 VT Elevator Lighting able..................................................................... 35 W Apparatus able, All-Asbestos extra flexible.......................................... 52 XB XBH XBS Switchboard Wire, 600 Volt, Type SNA................................................... 44 Switchboard Hinge able, 600 Volt, TypeSNA...................................... 46 Switchboard able, 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, AU-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.VC 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, AU-Asbestos Triplex.................................................. CAC......... Flexible Cord, A.V.C. Type Duplex................................................ CV ........... Flexible Cord, A.V.C Type Triplex...................................................CVC........ Headlight Wire......................................................,..............................T............... Heater Gird, 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, AU-Asbestos flexible.............................. ....................RF....... Lead Sheath......................................................................................... ................ Lighting Wire.......................................................................................C......... Mining Cable, 600 Volt A.V.C......................................................... ML ..... Motor Lead and Apparatus Cable....................................................... L......... Power Cable, 600 Volt AU-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 Stranded All-Asbestos........... ACS ... Rheostat Wire, solid conductor ......................................................... A......... Secondary Network Cable .............................................. .........UL ..... Signal Wire, 606 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 .. 40 .. 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, oil, grease, corrosive fumes or age. What a material to use where endur ance and resistance to deterioration are important! RBB 00313 7 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 50. 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 electrical 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. 11 experience shows severe condensation allowing water pockets, to form and continue for 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 where 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 fite hazard. Fot applications where cable may be submerged in water specify lead sheathing. 600 Voit A.V.C. Power Cable, Table , 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. 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 or H shown on pages 29, 30, 31 and 32. RBB 00314 ROCKBESTOS SUBWAY CAR AND LOCOMOTIVE WIRING The combination of heat and vibration to which the wiring of subway cars, electrified railway locomotives, electric mine locomotives and steam locomotives is almost constantly subjected, is ruinous to ordinary wire insulation. Rockbestos 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. Rockbestos Flexible Cord and Heaalight Wire is used by many railroads for cab light ing and gauge lighting as well as for circuits to head lights and classification lights. See pages 53, 36 and 59- MOTOR LEADS, WINDINGS AND COIL CONNECTIONS Rockbestos 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 clouds 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 Rock bestos A.V.C. Motor Lead and Apparatus Cable. We have made special 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, replacing 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 Rockbestos Magnet Wire and equipped with Rockbestos 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 Rockbestos originated and patented the first switchboard wire with the A.V.C. insulation. This is a genuinely fireproof wire but besides that wiremen like it because it does not crack when sharp bends are fmde 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 Rockbestos Hinge Cable, page 40, which is similar in appearance, si2e and electrical characteristics to the Table B Switchboard Wire. Like Rockbestos Hinge Cable, our A.V.C. Switchboard Bus Cable matches Rockbestos 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 are 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 ail of these requirements -- it cannot grow hard or brittle under the attack of heat, remains pemaoently 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 are massed or banked togtfher, 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, clears 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 ROCKBESTOS 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 Rockbestos 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 real 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 ate 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 coppet -- 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. Gose 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. RBB 00317 ROCKBESTOS . HEATING CABLE This cable is ideal for many applications where a mild heat must be districted 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 bendies, 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 clogging of conveyor pipes. A steel mill uses it on roll-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 clear of ice with it. See page 64. 9 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 spedaL 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 37. RBB 00318 10 ROCKBESTOS LIGHTING FIXTURES Modem 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 20OC. The resulting induced heat 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 Rockbestos Flexible Cords described on page 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 circuits 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 Rockbestos Boiler Room Wire is a little larger than the wire ordinarily used, industrial fixtures usually have enough dearanee 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 capacity 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. Rockbestos 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 Rockbestos Thermostat Control Wire has the perma nent heat resisting and fireproof characteristics of our other wires and cables. It fills a demand for a small armored signal and control cable 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 INSULATIQN? There are two standard types -- ^ (a) Rockbestos A.V.C insulation, a construction originated, developed and patented by Rockbestos (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 in it. (b) Rockbestos AU-Asbestos insulated wires on which the coveting 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.- Rockbestos A.V.C wire is designed for conduit installation. See detailed recommendation beginning on page 14. Rockbestos 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 Rockbestos cables run 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 Rockbestos A.V.C. wires or .cables. For specific conditions see conduit size -tables for Rockbestos Boiler Room Wire and Power Cables on pages 21 to 24. WHAT ARE THE CARRYING CAPACITIES OF ROCKBESTOS WIRES? Rockbestos 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 Rockbestos insulation. Specifically, a given size of Rockbestos insulated conductor will carry a higher current than other types of insulated wires. Conversely, where a given current is to be carried a smaller size Rockbestos 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 Rockbestos 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 Rockbestos line includes various single conductor constructions ranging up to 2,500,000 C.M. in size. Multiple conductor cables can be manufactured up to a diameter of approximately 2inches. 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? Anv Rockbestos wire can be so 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 types -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, Qbles 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 all Rockbestos 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 more 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. d RBB 00321 ROCKBESTOS SPECIAL BRAIDS AND FINISHES On any 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 at 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 AIl*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. *=3 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. Tlie compound shall develop no injurious chemical reaction within itself or with any component parts of die 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 cloth 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 60% 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 specified. 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 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 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. O 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 flame, 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 I/2" 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 U/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 3 ft. section wrapped in metal foil. 2. Dielectric Strength After Flame Tests. Samples of cables having been previously subjected to the Flame Test shall a:; 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, 1 1/2 times rated voltage. (2) All-Asbestos insulated wires and cables rated at 600 volts, 2l/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 O. D.* Sine in Inches 1 2 NUMBER OF WIRES 3 4| S 6 7 A.W.G. MINIMUM SIZE OP CONDUIT It 16 10 -220 Vi .235 Vi Vi .265 Vi .215 Vi Vi Vi Vi Vi Vi Vi Vi Vi Vi Vi Vi Vi Vi 1 1 Vi 1 1 1 1 ii i IVi IVi l 1i IVi IVi Vi Vi Vi 1 IVi IVi IVi $ 465 .405 Vi Y) 1 1 1 IVi IVi IVi IVi IVi IVi IVi 2Hi' 4 S .425 .450 a Vi 1 1 IVi IVi IVi 2 IVi IVi IVi 2 2 2 .4*0 Vi Wi IVi IVi 2 2 2 1 0 00 0000000 430 Vi iVi IVi 2 2 2 2Vi .565 Vi IVi m 2 2 2Vi 2Vi .60S IVi IVi 2 2Vi 2Vi 450 1 2 2 2Vi 3 3 .700 1 IVi 2 2V4 3 3 3 ' Subject to pin* or minus i% tolereace due to variations in manufacturing processes. 8 t iVi IVi IVi IVi IVi 2 2 2 2 2Vi 2Vi 3 3 3 S 9 1 IVi IVi IVi Hi IVi 2 2 2 Vi 2 Vi 3 3 3 3 Vi 3 V TABLE E 600 VOLT A.V.C. POWER CABLE O. D.* Size in Inches 1 2 NUMBER OF WIRES 345 6 7 MINIMUM SIZE OF CONDUIT A.W.G. U .255 Vi Vi Vi Vi .215 Vi Vi Vi Vi Vi .305 495 Vi Vi Vi Vi V, 1 i y* i i iVi i i i n/4 IVi 1 1 1 Vi IVi IVi IVi i Hi IVi IVi IVi IVi IVi Hi 1VS .420 Vi IVi Vi IVi .470 V* w IVi IVi IVi IVi H/. IVi IVi IVi 2 2 2 .505 Vi IVi IVi IVi 2 2 2 Vi .565 Vi IVi IVi 2 .625 IVi 2 2 2Vi 2Vi 2 Vi 2Vi 2Vi 3 00 .670 000 .720 1 22 22 2Vi 2 Vi 3 2Vi 3 3 3 0000 250.000C-M. .7S0 .665 IVi IVi 22 2Vi 2Vi 2Vi 3 3 3 Vi 3 3 Vi 3Vi 300.000 .940 IVi 2Vi 3 3 3 Vi 4 350.000 400.000 450,000 .995 1.040 1.065 IVi IVi IVi 3 3 4 3 3 3 3 V, 3 Vi 4 Vi 3 Vi 4 Vi Vi 3 Vi 4 Vi 500,000 1.125 IVi 3 3 4 4 Vi 550.000 1.165 IVi 3 3 Vi 4 Vi 600,000 23 3 Vi 4 Vi 650.000 700,000 1440 1.275 2 2 IVi 3 Vi 4 Vi 3Vi 3y. 4Vi 5 750.000 100.000 1.310 1445 2 2 3 Vi 3 Vi Vi 5 SVi 4 Vi 5 650,000 1475 2 3 Vi 4 Vi 5 930.000 1.000.000 1.405 1.435 1.465 2 2 2 4 4 4 4 4 4 Vi 56 56 6 * Subject to plu* or minus 5% tolerance due to variation* in manufacturing processes. 8 IVi Hi IVi IVi IVi IVi 2 2 2 2Vi 2Vi 3 3 3 3 Vi SVi 4 Vi Vi 5 9 IVi Hi IVi IVi IVi 2 2 2 SVi 2Vi SVi 3 3 3 Vi 3Vi Vi Vi RBB 00328 22 - ROCKBESTOS = CONDUIT SIZE TABLES TABLE EL 600 VOLT LEAD SHEATHED A.V.C. POWER CABLE Size O. D.* in Inehee 1 2 NUMBER OF WIRES 3|4 | 5 16 7 MINIMUM SIZE OF CONDUIT A.W.G. it .290 54 Y, Y* i 154 154 154 .505 y Yt 1 .320 54 l i .340 54 l l .360 */, l l i iy* iy* 154 t iy* iV* iV* i y* 154 iy* iV* 154 m 54 iy. iy* iy. 2 54 m iy* 154 2 .450 V. .480 Y* 154 154 i y* iy* 154 iV, 2 2 2 2 2 254 Y. iy* i y. 2 2 214 1 Y* .620 l 164 1V, 2 iy, 2 2 2 2 254 2V, 254 3 254 3 2 254 3 1 2 2 y. IV, 3 354 260.000 C.M, .955 i y* m 154 I 54 IV, 3 3 3 254 3 3 3 3 3V, 354 3 v% 3V, 4 4 4 314 454 454 400.000 1.105 iy. 3 3 4J0.000 500.000 1.150 IV, 3 3 Vi 1.190 2 iV, ty> 4 4V, *v. 1.265 2 tv. tv. 4 V, 5 600.000 1.305 2 3y, 4 4/, 5 1.340 2 tv. 4 4V4 6 1.375 2 4 4 *v 750.000 1.410 2 4 4 800.000 1.440 2 4 4 t,000 1.490 2 4 4 900.000 1.505 254 4 4 V, 950,000 1.535 2y. 454 1,000.000 1.560 ty. 4 V, 4/, 6 6 * Subject to plus or minus 5% tolerance due to variations in manufactures processes. ** Sizes No. 12 A.W.C. and smaller can be supplied with 2/64' lead. 8 154 154 1*4 2 2 2 254 3 i3U14 9 i 5, 154 2 2 2 2 214 25, 3 3 3*4 4 TABLE EM 1000 VOLT A.V.C. POWER CABLE Size O. D.* in Inches 1 A.W.G. 18 6 Z 0 .285 did .425 .450 .535 .615 .655 .700 .810 .895 .950 1.00$ 1.0S0 1.095 1.135 1.175 1.215 1.250 1.28$ 1.320 1.35$ 1.415 1.475 54 54 14 54 14 54 54 V, iY) i i 154 154 154 154 154 154 154 2 2 2 2 2 2 2 2 2 V* V* Y* 154 154 \Yf 154 m xy, 2 2 2 2y, 254 3 3 3 3 3 354 354 354 354 354 4 4 NUMBER OF WIRES 3 | 4j S_ 6 7 MINIMUM SIZE OF CONDUIT V* l Y* i l i iy. iy. 154 154 154 154 154 154 154 iV* iy 154 154 154 1 154 154 154 154 154 154 iy. iy. 154 2 2 2 & 154 2 22 2 2H 254 254 S32 254 2y, 3 2 354 3 3 2 354 3 254 3 354 354 3 354 32 3 354 45C 3V, 34 354 4 *54 354 354 4 <54 354 414 354 4V, 4 4y. 4 4 66 * Subject to plus or minus $% tolerance due to variations in manufacturing processes. 8 154 iy 154 154 254 254 2y, 3 354 454 9 1V4 m iy. 154 254 254 254 3 3 4* RBB 00329 === ROCKBESTOS - CONDUIT SIZE TABLES TABLE F 2000 VOLT A.V.C. POWER CABLE Size O. D.* in Inches 1 2 NUMBER OF WIRES 3 4[5 16 7 MINIMUM SIZE OF CONDUIT A.W.G. 14 .335 *4 l i 1*4 1*4 1*4 1*4 12 .383 y. i i 1*4 1*4 1*4 10 .410 'A i 1*4 1*4 1*4 1*4 2 8 .440 y. I Vi 1*4 1*4 1*4 : 2 2 6 .475 Vt 1V4 1*4 1*4 2 ' 2 2 3 .500 V* IV* 1*4 1*4 2 2 2*4 4 .525 , 1*4 1*4 2 2 2 2*4 3 .530 V* 1*4 1*4 2 2 2'/. 2*4 2 483 * 1*4 1V4 2 2V4 2V4 2*4 1 .645 1 2 2 2 2 Vi 3 3 0 .683 1 2 2 2*4 2*4 3 3 00 .730 1 2 2 2V4 3 3 3 000 .780 i y. 2 2 3 3 3 3*4 0000 .840 IV. 2*4 2*4 3 230.000 C.M. .925 1V* 2*4 2*4 3 3 3*4 3*4 4 3*4 4 300.000 330.000 400.000 430,000 300.000 .980 1.035 1.080 1.125 1.165 IV* IV* 1*4 1*4 1*4 3 3 3 3 3 3 3*4 3*4 4 4*4 3 3*4 4 4 4*4 3 3*4 4 4*4 3 3 4 4 4*4 5 3*4 4 4*4 3 5 530.000 000.000 1.205 1.245 2 2 3 3*4 4 1*4 3*4 4 4*4 3 4*4 5 5 6 030.000 1.280 2 3*4 3*4 4*4 5 5 6 700,000 1.313 2 3*4 3*4 4*4 5 6 6 730.000 1.350 2 3*4 4 4*4 5 6 6 800.000 1.385 2 3*4 4 4/, 5 6 6 000,000 1.445 2 4 4 3 6 .6 6 1.000.000 1.305 2 4 4 5 6 6 * Subject to plut or minus $% tolerance due to variations in manu/aeturing processes. 8 2 2 2 2*4 2Vi 2*4 2*4 3 3 3*4 SV. 4 4*4 4*4 5 3 3 6 6 6 6 6 6 9 2 2 2 2*> 2*4 2*4 3 3 3 3 3*4 3*4 4 4 4 *4 3 5 6 6 6 6 6 TABLE G 3000 VOLT A.V.C. POWER CABLE Size O. D.* in Inches 1 2 NUMBER OF WIRES 3 4 15:6 MINIMUM SIZE OF CONDUIT A.W.G. 14 .425 *4 1*4 i*4 m 1*4 , 2 2 12 10 .445 .470 %*4 1*4 1*4 1*4 1*4 1*4 1*4 1*4 : 2 22 2 2 8 .300 1*4 1*4 1*4 2 2 2*4 6 .333 y. 1*4 1*4 2 2 2V, 2*4 5 4 .360 .583 V. *2 1*4 1*4 1*4 1*4 2 2 2 2*4 2'4 2'4 2*4 2*4 3 .610 i 1*4 1*4 2 2*4 2*4 3 2 i 2 2 2 2*4 3 3 1 .705 i 2 2 2*4 3 , 3 0 .745 i 2 2 2*4 3 3*4 00 .790 1*4 2 2*4 3 3. 3*4 000 .840 1*4 2*4 2*4 3 3 3*4 3*4 0000 .900 1*4 2*4 2*4 3 3*4 j 3*4 230.000 C.M. .985 1*4 3 3 3*4 3*5 I 4 4*4 300.000 1.040 1*4 3 3 3*4 4 ; 4*4 4*4 330.000 1.095 1*4 3 3 3*4 4 i 4*4 3 400.000 1.140 1*4 3 3 4 4*4 ' 4*4 3 430.000 1.185 2 3 3*4 4 4*4 l 5 3 500.000 1.225 2 3*4 3*4 4 4*4 ; 5 6 530.000 1.265 2 3*4 3*4 4 4*4 3 6 600,000 1.305 2 3*4 3*4 4*4 5 6 650.000 1.340 2 3*4 3*4 4*4 5 1 6 700.000 730,000 1.375 1.410 2 2 3*4 4 44 4*5 5 ; 6 4*4 5 6 6 800.000 1.443 2 4 4 3 e 16 6 900.000 1.505 2 4 4 5 6 6 1.000.000 1.365 2*4 4 4*4 5 6 6 Subject to plus or minus 5% tolerance due to variations in manuiacturing processes. 8 2 2 2*4 i'A 2'/. 3 3 3 3 3*4 i'A i'A 4 4*4 5 5 6 6 6 6 9 2 2*4 2*4 2*4 3 3 3 3 3 3*4 4 4 4 4*4 5 5 6 6 6 6 6 23 RBB 00330 24 ROCKBESTOS CONDUIT SIZE TABLES TABLE H 5000 VOLT A.V.C. POWER CABLE m Sise O. D.* in Inches 1 2 NUMBER OF WIRES 34* 6 * MINIMUM SIZE OF CONDUIT A.W.G. 34 .433 * 1*4 1*4 6 .360 Yt H Y< 111*44 lu 1*4 1*4 1*4 1*4 2 2 .620 Y* 1 Vi 1U 1*4 2 2 2 222 2 2 2*4 2 2 2*4 .763 1*4 2 2 2*4 *4 2 2*4 3 4 2*4 2*4 3 \Y1 2V4 2*4 3 230.000 C.M. 1.04$ 1*4 w. 2*4 3 3 3 3 3*4 \Y, 3 3 3*4 1*4 3 3*4 4 23 1.243 2 3*4 1.283 2 IV 1.323 2 600.000 1.363 2 3*4 1.400 2 4 1.433 2 730.000 1.470 2 300,000 1.305 2 900.000 1.000.000 1.363 2*4 4*4 1.623 2*4 4*4 4*4 6 22 22 2 2*4 2*4 2*4 2*4 2*4 2*4 2*4 3 3 3*4 3*4 4 4*4 6 2*4 3 4 Subject to plu or misut 3% tolerance due to variation! in manufacturing procetiei. 8 2y, a j 3 3 3 3 3*4 3*4 4 4 4 4% 5 s 6 6 6 6 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. this is THt coamuctioH or tins it to t this it THt coNtTtueno* or tint to 4i 25 1)41 t. SOLID PLAIN COPPlt CONOUCTOR l. ftLTtO AIICSTOt VAftfflSHfO CAB IIMC 4. PlbKO AtlCSTOI ft. ASICSTOft MAIO Size A.W.G. 0000 000 00 0 1 2 3 4 5 6 8 10 12 14 16 18 This wire is recommended for open wiring and 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 handies 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. TYPE AVA--TABLE C--600 VOLT SERVICE (NEMA Standard No. 39*54 Table 37) Bare Diam. Nominal Thickness First Felted Wall Nominal Thickness V. C. Insert Nominal Thickness Second Felted Wall vu> N 35 d Nominal Finished 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 15 15 15 15 15 15 15 15 15 15 Mils 30 30 30 30 30 30 30 30 30 30 25 25 25 25 25 25 Mils sc Inches Pounds ta> i30 th .700 30 .650 30 .605 i30 Q .565 30 .530 20 m .480 20 sc u .450 20 H .425 20 i-> .405 800 657 543 422 348 279 231 193 160 20 b. .385 20 o .310 20 C/> .285 20 u .265 138 87 62 47 20 .245 20 V .235 i20 .220 38 31 27 Coils 500 500 1000 1000 1000 1000 1000 Reels 450 500 500 500 500 500 1000 1000 1000 1000 1000 1500 1500 2000 2000 2000 * Finished diameters Riven above are averafe. A tolerance of plus or minus is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts, 2.S for sizes 18 to 8 and 3.0 for 6 to 4/0. RBB 00332 26 ROCKBESTOS 600 VOLT A.VX* POWER CABLE ASHPITS AND ASH ALLEYS, AROUND SOAKING PITS, FURNACES, OVENS, LEHRS, TENTER FRAMES, STEAM TUNNELS, ALL BOILER ROOM CIRCUITS AND FOR GENERAL HOT-SPOT WIRING i t>4 I. *T*AK0M PLAIK COMI* CONPUCTO* X. PCCTCO ASBCfTOI X. VAMIXttgB CAUStIC 4. FILTXP tllltTOI S. Atlttroi IIAIB 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.C Power Cable handles and pulls into conduit the same as any other cable. See conduit sue 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 loog periods, such as circuits around ashpits where ashes are wet down, we recommend Table EL Lead Sheathed A.V.C. Power Cable shown on page 28. 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 op to 5000 see Tables EM, F, G and H on pages 29, 50, 31 and 32,, This cable is National Electrical Code Type AVA. listed by Underwriters' Laboratories. TYPE AVA--TABLE E--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 1) Size Stranding 1,000,000CM 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/.I248 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 Bare Diam. Nominal Nominal Thickscm First Thickneaa Thickness Second Felted V.C. Felted Wall Insert Wall Nominal Finished Diam.* Annrox. Net Weight M ft. Inches Mils Mils Mil* Inches Pounds V) 1.152 30 40 40 u N 1 465 3510 1.123 30 40 40 tn 1 435 3346 1.093 30 40 40 1.405 3182 1.062 30 40 40 < 1.375 3018 1.031 30 40 40 a 1-345 2854 .998 30 40 40 2 1.310 2689 .964 30 40 40 s 1.275 2524 .929 30 40 40 S 1.240 2359 .893 30 40 40 1.205 2193 .855 30 40 40 1.165 2027 .814 30 40 40 s 1 125 1860 .772 30 40 40 1.085 1692 .728 30 40 40 u 1 040 1525 .681 30 40 40 .995 1357 .630 30 40 40 c .940 1188 .575 30 40 40 Cs. .885 1017 .528 20 30 30 If) .780 839 .470 20 30 30 z .720 690 .418 20 30 30 u .670 571 -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 (Feet) Coil* Reel* 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 ipoo 1000 1000 1000 1000 1000 1000 1000 * Finished diameters given above are average. A tolerance of pius or minus S% is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts. 2.S for site* It to 8. 3.0 for 6 to */0 and A.O for 330.000 to 1,000.000 CM. RBB 00333 ROCKBESTOS THREE CONDUCTOR 600 VOLT A. V. C. POWER CABLE for{ SAME USES AS TABLE "" WHERE MULTI-CONDUCTOR CABLE IS REQUIRED 113 4 1* 1 i. *Teio a lain eoMt conbucto* *. rtirio asbcstos . CABLC TAR* a. vorishco CAaatic 7. AtlCITOl *A(0 4. rcitto aiiiitos , jure nueas 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 fillers, 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 Nominal Nominsl Approx. Standard Bare Single Finished Net. Wt. Shipping Lengths Size Stranding Diam. Diam.' Diam.' per M ft. (Feet) Inches Inches Inches Pounds 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/.0940 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 liven above are average. A tolerance of plus or minus is necessary due to variations in process of manufacture. Dielectric test voltaies between conductors in kilovolts. 5.0 for sites IS to S. 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. 2.0 for 6 to 4/0 and 4.0 for 250.000 to 500.000 CM. RBB 00334 28 ROC K B E S T O S 600 VOLT LEAD SHEATHED A. V. a POWER CABLE LIGHTING, CONTROL AND POWER CIRCUITS UNDER ANY CONDITION FROM COMPLETE SUBMERSION TO CONSTANT HIGH TEMPERATURES ij i i. nuen plaid cosec* cohoucto* s. piltcd aiurot a. wmimio cas*ic a. pcltio uiutm i. uao cmcath 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 fhr 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 control 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) Size Stranding Bare Diam. Inched Nominal Nominal Thickness First Thickness Thickness Second Felted Y. C Felted Lead Wall Insert Wall Thickness ... i - -- -- Mils Mils Mils Inches Nominal Finished Diarn.* ---- Inches Net Weight per M__ft. Pounds Shipping Lengths _(Feet) 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/.U09 .998 30 40 40 6/64 1.410 4570 500 700,000 61/.107I .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/.U03 .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 P/.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 1 19/.0745 19/.0664 .373 .332 20 20 30 30 30 4/64 .660 1005 1000 30 4/64 .620 890 1000 2 7/.0974 .292 15 30 30 4/64 .570 774 1000 3 4 7/.0867 .260 15 30 30 3/64 .505 563 1000 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 .360 301 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 dlMnm.?*lvtn *bove *re *VCT1e. A toltrance of plus or minui 5% it necessary due to variation* in process of manufacture. *itet Mo. 12 A.W.G. end smaller can be supplied with 2/M* lead tbesth. NBMA dielectric teat voltage for all sites l.S kilovolt* for five 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 t I4 ) 1. (TMNOtO PLAIN COPPtR CONBUCTO* t. FCLTCO *0tSTOS J. VASNISHCB CAMSSIC 4. FtLTtD ASSCSTOS S. ASatSTOX a*AIB 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 1000 volts or less. Lead sheathed ot armored if desired. Also available in multi-conductor construction. Specification for any given size on request. TABLE EM -- 1000 VOLT SERVICE (NEMA Standard No. 39-54 Table 3) Nominal Nomina) AoDrox. Standard Size Stranding Bare Diam. Thickness First Felted Thickness V. C Thickness Second Felted Wall Insert Wall Nominal Finished Diam.* Net Weight per M ft. Shipping Lengths (Feet) Inched Mils Mils Mils Inches Pounds Coils Reels 1,000,000 CM 61/.1280 950,000 61/.1248 1.152 1.123 30 30 45 45 40 40 Cfi UN 1.475 1.445 3521 3354 900,000 61/.1215 1.093 30 45 40 (A 1.415 3187 850.000 6l /.1180 1.062 30 45 40 1.385 3020 800,000 61/. 1145 1.031 30 45 40 < 1.355 2853 750,000 61 /. 1109 .998 30 45 40 ce 1.320 2687 700,000 61/.1071 .964 30 45 40 it. 1.285 2521 650,000 61/.1032 .929 30 45 40 1.250 2355 600,000 61/.0992 .893 30 45 40 s 1.215 2189 550,000 61/.0950 .855 30 45 40 1.175 2023 500,000 37/.1162 .814 30 45 40 1.135 1857 450.000 37/.1103 .772 30 45 40 2 1.095 1691 400,000 37/. 1040 .728 30 45 40 1.050 1525 350,000 37/.0973 .681 30 45 40 1.005 1359 300.000 37/.0900 .630 30 45 40 .950 1193 250,000 37/.0822 .575 30 45 40 e .895 1024 A.W.G. 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 0000 19/.1055 .528 20 45 30 .810 857 lObO 000 19/.0940 .470 20 45 30 Hi .750 708 00 19/.0837 .418 20 45 30 z .700 588 1000 1000 0 19/.0745 373 20 45 30 .655 491 1000 1 19/.0664 .332 20 45 30 s .615 413 2 7/.0974 .292 15 45 15 H .535 299 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 14 7/.0242 .073 15 45 15 335 67 1000 .315 54 1000 Finished diameters given above are average. A tolerance of plus or minus iCr is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts. 3.5 for sires 14 to t and 4.5 for 6 to 1.000,000 CM. RBB 00336 30 ROCKBESTOS 2000 VOLT A*V.C. POWER CABLE GENERAL POWER WIRING IN BOILER ROOMS, POWER PLANTS, STEEL MILLS AND INDUSTRIAL PLANTS ) 1S I. JTMKOtO PLAIN COPPCA CONOWCTOA S t. PELTED ASSESTOS 3. VAANISNEO CANMIC s 4. PCLTEO ASSESTOS S AS.SEST0S MAID 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. Size Stranding 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 61/.1280 61/.1215 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/.O305 7/.0242 TABLE F -- 2000 VOLT SERVICE (NEMA Standard No. 39-54 Table 4) Bare Diam. Nominal Thickness First Felted Nominal Thickness V. c. Nominal Thickness Second Felted Wall Insert Wall Inches Mils Mils Mils Nominal Finished Diam.* Approx. Net Weight per M ft. Inches Pounds Star dard Shi] ping Let gths (F eet) Coils Reels 1.152 30 60 40 tr. 1.505 3558 1.093 30 60 40 1.445 3230 1.031 ' 30 60 40 1.385 2907 .998 30 60 40 1.350 2738 .964 30 60 40 1.315 2569 E.929 30 60 40 CS 1.280 2403 .893 30 60 40 1.245 2236 .855 30 60 40 1.205 2066 .814 30 60 40 1.165 1897 .772 30 60 40 1.125 1728 .728 30 60 40 1.080 1564 .681 30 60 40 C 1.035 1390 .630 30 .575 30 60 60 40 40 -- t .980 .925 1225 1060 500 500 500 500 500 500 500 500 500 500 500 500 500 500 .528 20 60 30 .840 878 1000 .470 20 .418 20 60 60 30 30 la. .780 .730 715 594 1000 1000 .373 20 60 30 Cft .685 492 1000 .332 .292 20 15 60 60 30 25 z * .645 .585 412 324 1000 1000 .260 15 60 25 S .550 269 1000 .232 15 60 25 .525 233 1000 .206 15 60 25 .500 197 1000 .184 15 60 25 .475 172 1000 .146 15 60 25 .440 130 1000 .116 15 60 25 .410 104 1000 .092 15 60 25 .385 85 500 1000 .073 15 60 25 .365 70 500 1000 * MiAeVl.""t*r# 8iV*n. *bovt ,re *ver*8*- A ferine* of plus or minus S% is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts. 4.5 for sizes 14 to 8, S.O lot 6 and 5. 5.5 for 4 to 2 and 6.0 for 1 to 1.000.000 CM. RBB 00337 ROCKBESTOS 3000 VOLT A.V*C. POWER CABLE ( for\ 1 GENERAL POWER WIRING IN BOILER ROOMS, POWER PLANTS, STEEL MILLS AND INDUSTRIAL PLANTS 31 IZ I. STBtNOtS PLA1M COPPCR COHOUCTO* 2. FtlTCO OtEITOt 2. VAKISE0 CAHOtC ritrce atattros AtStSTOS a**IO 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. TABLE G -- 3000 VOLT SERVICE (NEMA Standard No. 39-54 Table 5) Size Stranding Bare Diam. Nominal Nominal Nominal Thickness First Felted Thickness V. C Thickness Second Felted Wall Insert Wall Nominal Finished Diam.* Approx. Net Weight per M Ft. Standard Shipping Lengths (Feet) Inches Mils Mils Mils Inches Pounds Reels 1,000,000 CM 61/.1280 1.152 30 90 40 1.565. 3635 500 900,000 61/.1215 1.093 30 90 40 N 1.505 3302 500 800,000 61/.1145 1.031 30 90 40 <r. 1.445 2969 500 750,000 61/.1109 .998 30 90 40 2 1.410 2800 700,000 61/.1071 .964 30 90 40 < 1.375 2631 500 500 650,000 61/.1032 .929 30 90 40 1.340 2457 600,000 61/.0992 .893 30 90 40 3. 1.305 2293 500 500 550,000 61/.0950 .855 30 90 40 irt 1.265 2119 500 500,000 37/.1162 .814 30 90 40 5 1.225 1955 500 450,000 37/. 1103 .772 30 90 40 o 1.185 1786 500 400,000 350,000 37/.1040 37/.0973 .728 .681 30 30 90 40 oi 1.140 1612 90 40 1.095 1443 500 500 300,000 37/.0900 .630 30 90 40 1.040 1269 500 250,000 A.W.G. 37/.0822 .575 30 90 40 (d H .985 1094 500 0000 19/. 105 5 .528 20 90 30 .900 920 1000 000 00 19/.0940 19/.0837 .470 .418 20 20 90 90 30 u. O .840 30 V} .790 766 1000 642 1000 0 19/.0745 .373 20 90 30 Ui .745 543 1000 1 19/.0664 .332 20 90 30 .705 459 1000 2 7/.0974 .292 15 90 25 w .645 383 1000 3 7/.0867 .260 15 90 25 = .610 331 1000 4 7/.0772 .232 15 90 25 b .585 260 1000 5 7/.0688 .206 15 90 25 .560 225 1000 6 7/.0612 .184 15 90 25 .535 195 1000 S 7/.0486 .146 15 90 25 .500 155 1000 10 7/.0385 .116 15 90 25 .470 125 100C 12 7/.0305 .092 15 90 25 .445 105 1000 14 7/.0242 .073 15 90 25 .425 90 1000 Finished diameters given above are average. A tolerance of plus or minus S% is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts, 7.0 for sizes 14 to 8, 7.S for 6 and J, 8.0 for 4 to 2. 8.S for 1 to 4/0 and 9.0 for 250.000 to 1.000.000 CM. RBB 00338 32 ROCKBESTOS 5000 VOLT A.V.C. POWER CABLE GENERAL POWER WIRING IN for f BOILER ROOMS, POWER PLANTS, l STEEL MILLS, INDUSTRIAL PLANTS, ETC. 1. *TN010 PLAIN COPPC* CONOUCTOA 2. PCLTCO ASSHTOS 2. VAPNUMIO CAMAIC 4. PCLTIO ASSrSTOS . ASBtSTOS aID 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. TABLE H -- 5000 VOLT SERVICE (NEMA Standard No. 59-54 Table 6) Nomina! Nominal Nominal Approx. Standard Size Stranding Bare Diam. Thickness First Thickness Thickness Second Felted V. C. Felted Wall Insert Wall Nominal Finished Dtam.* Net Weight per M Ft. Shipping Lengths (Feet) Inches Mils Mils Mils Inches Pounds Reels 1,000,000 CM 61/.1280 1.152 30 120 40 tn id 1.625 3721 900,000 61/. 1215 1.093 30 120 40 N 1.565 3379 500 500 800,000 61/.1145 1.031 30 120 40 1.505 3040 500 750,000 61/.1109 .998 30 120 40 2 1.470 2876 500 700,000 61/.1071 .964 30 120 40 1.435 2701 500 650,000 600,000 61/.1032 61/.0992 .929 .893 30 30 120 120 40 40 u. 1.400 1.365 2532 2362 500 500 550,000 61/.0950 .855 30 120 40 M 1.325 2190 500 500,000 37/.1162 .814 30 120 40 6 1.285 2018 500 450,000 37/.U03 .772 30 120 40 O 1.245 1844 500 400,000 350,000 37/.1040 37/.0973 .728 .681 30 30 120 120 40 40 3as 1.200 1.155 1674 1500 500 500 300,000 250,000 A.W.G. 37/.0900 .630 30 120 40 C 1.100 1324 37/.0822 .575 30 120 40 id HS 1.045 1153 500 500 0000 19/.1055 .528 20 120 30 .960 967 1000 000 19/.0940 .470 20 120 30 0 .900 812 1000 00 19/.0837 .418 20 120 30 C/5 .850 687 1000 0 1 19/.0745 19/.0664 .373 .332 20 20 120 120 30 30 u z .805 .765 582 1000 497 1000 2 7/.0974 .292 15 120 25 V .705 402 1000 3 4 7/.0867 .260 15 120 25 5 .670 7/.0772 .232 15 120 25 .645 363 1000 319 1000 5 7/.0688 .206 15 120 25 .620 285 1000 6 7/.0612 .184 15 120 25 8 7/.0486 .146 15 120 25 10 7/.0385 .116 15 120 25 12 7A0305 .092 15 120 25 14 7/.0242 .073 15 120 25 .595 .560 .530 .505 .485 251 1000 182 1000 152 1000 132 1000 117 1000 Finished diameters given above are average. A tolerance of plus or minus $% is necessary due to variations in process of manufacture. NEMA dielectric test voltage >2.0 kilovolts on all sizes. rBB 00339 ROCKBESTOS 600 VOLT A.V.C. MOTOR LEAD and APPARATUS CABLE J COIL CONNECTIONS, STEEL MILL MOTORS, TRANSFORMER LEADS, JOT \ ELECTRIC LOCOMOTIVES AND SUBWAY CARS 9 33 I 2 94 t I. FLESISLt TIMID COWS COkOUCTO* t. FILTtD mtITOJ J. VASNISKCD CAMIIIC 4. FCLTtD MIU'Di 5. ASelSIOS MMO 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 cars, 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 rot, 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 ate encountered. See page 51. TYPE AVA --TABLE L--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 55) Nominal Nominal . Approx. Standard Sice Stranding Bare Thickness First Felted Thickness V. C. Thickness Second Felted Nominal Finished Net Weight Shipping Lengths Tinned Diam. Vail Insert Wolt Diam.* M ft. (Feet) Inches Mils MtU Mils Inches Pound* Coils 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 A.W.G. 427/.0480 427'0472 427/.0453 427/.0446 427/.0427 427/.0420 427/.0403 427 '.0390 427/.0380 427/.0359 427/.0342 427/.0325 427/.0306 427/.0286 427/.0265 427/.0242 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 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 40 40 1.585 3628 40 40 1.565 3533 40 40 40 40 X a 1.515 1.495 3294 3199 40 40 X 1.445 2961 40 40 1.425 2794 40 40 < 1.380 2622 40 40 a 1.345 2428 40 40 c 1.320 2289 40 40 1.260 2087 40 40 40 40 lA 1.215 e> 1.170 1935 1764 40 40 a 1.120 1586 40 40 < 1.065 1404 40 40 C 1 010 1233 40 40 u. .945 1055 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 0000 000 00 0 1 259/.0286 259/.0255 259/.0227 259/.0202 259/.0180 .600 -536 .477 .424 .378 15 15 15 15 15 30 30 X X .840 875 30 30 v .775 721 30 30 sg .720 592 30 30 .665 492 30 30 S .620 415 1000 1000 1000 1000 1000 2 133/.0224 .336 10 30 15 .540 300 1000 3 133/.0199 .299 10 30 15 .500 248 1000 4 133/.0177 .266 10 30 15 .470 210 1000 5 133/.0158 .237 10 30 15 .440 173 1000 6 133/.0141 .212 10 30 15 .415 147 500 1000 8 133/.0112 .168 10 30 15 .370 104 500 10 105/.010 .120 10 12 65/.010 .095 10 14 41/.010 .075 10 30 15 30 15 30 15 .320 .295 .275 76 500 59 1000 45 1000 16 26/.010 .059 10 50 15 .260 38 1000 18 16/010 .045 10 50 15 .245 32 1000 * diameters given above are average. A tolerance of plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric test volugts in kilovolts. 2.S for sites 18 to 8. J.O for 6 to VO and 4.0 for 2SO.OOO to 1.000.000 CM. RBB 00340 \ 34 ROCKBESTOS 600 VOLT A.V.C. MINING CABLE for { ALL INTERNAL CIRCUITS OF ELECTRIFIED MINING EQUIPMENT I. riHItlt TINNED COFFC* COMDUCTO* 13 4 *. FCITtO ASICSTOf S 3. VARNISHES CAHIA1C 4. FCITEO AfltHOS t. ASSCSTOS 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 Sice 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 1000 00 259, 37x7 (.0227) .477 15 40 15 .716 553 1000 0 259, 37x7 (.0202) .424 15 1 259, 37x7 (.0180) .378 15 40 40 15 .669 455 15 .620 377 1000 1000 2 133, 19x7 (.0224) .336 10 40 10 .546 300 1000 3 133,19x7 (.0199) .299 10 40 4 133, 19x7 (.0177) .266 10 40 5 133,19x7 (.0158) .237 10 40 6 133, 19x7 (.0141) .212 10 40 8 133, 19x7 (.0112) .168 10 40 10 105/.010 .120 10 40 12 65/.010 .095 10 40 14 41/.010 .075 10 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 10 .294 54 1000 10 273 43 1000 * Minimum diameter 92'/,% of maximum diameter. RBB 00341 ROCKBESTOS FIREPROOF ELEVATOR CONTROL CABLE 35 I1 I. Finnic Slid CORE S. FELTED ASRESTOS J 45 ? t 1. COTTON SERVING J. STRANOEO FIAIN COFFER CONDUCTOR t. RATON SRAIB T. ASRCSTOS FILLERS 4, CARLE TAPE 4. SPECIAL RURSCR ASRESTOS RRAIO Enough eierstor fires hive occurred to thn there is i growing conviction among elevator manufacturers, building mans* gers and architects that a fireproof elevator control or travelling 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 to 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 so 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 Number 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 Lengths (Feet) Reels 2 .640 .610 169 3 .640 .610 189 4 .640 .610 209 6 .640 .610 249 8 .760 .730 332 10 .860 .780 391 12 .980 .880 434 14 1.100 .980 513 16 1.130 1.070 593 18 1.130 1.070 635 20 1.230 1.170 736 30 1.330 1.270 1015 156 171 186 In 226 288 Lengths 330 383 426 as 503 535 Specified 625 853 * Finished diameters given above are average. A tolerance of plus or minus S<7( is necessary due to variations in process of manufacture. I. STRANDED PLAIN COPPER CONDUCTOR a. SPECIAL RUBBER 5. FCLTEO ASBtSTOS 4. RATON RRAIO S. ASBESTOS FILLERS t. ASRESTOS RRAIO 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 moisture-resisting 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 Conductors No. 14 A.W.G. Approx. Net Weight per M ft. Pounds Standard Shipping Lengths (Feet) Reels 2 .490 111 In Lengths as Specified * Finished diameters given above are average. -A tolerance of plus or minus S% 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 I1 >4 I 7 1. TIXNIO C0**t* COHBUCTO* l. FlLTte AIStfTOS J. VARMIIHCO CAHINIC 4. FtLTCD AtSCtTO* Clf TAFt 7. ASItSTOS ItAIB coio* eooto cotton (raids 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 standings 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 * 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 1! " .. White " Conductors 14 15 1 16 17 , *8 , 19 Base Colot Green Blue Black White Orange Blue Tracer White Red * " 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*V.C CONTROL CABLE Nominal Sizes 9 and 12 A.W.G. 1 to 19 Conductors (See page 36 tor general information) J7 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 braid, are: No. 9 --.265" No. 12 --.230" Number of Conductors **1 ***2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 TABLE MD (NEMA Standard No. 39-54 Table 16) A.W.G. No. 12 - 19/25 Nominal Finished Diameter* Approx. Net Weight per M feet Standard Shipping Lengths (Feet) Inches .290 .570 .605 .660 .735 .795 .795 .870 .935 1.020 1.055 1.055 1.110 1.110 1.175 1.175 1.245 1.245 1.245 Pounds 56 176 204 249 281 333 343 395 441 468 516 539 592 616 675 699 748 772 795 Reels 1000 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 500 TABLE MT (NEMA Standard No. 39-54 Table 17) A.W.G. No. 9 19/22 Nominal Finished Diameter* Approx. Net Weight per M feet Standard Shipping Lengths (Feet) Inches .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 Pounds 81 233 288 358 412 491 516 555 670 715 790 832 915 948 1047 1100 1168 1210 1253 Reels 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% i* necessary due to variations in process of manufacture. *' Single conductor has no cotton braid. Asbestos braid is applied directly over insulation *** Can be furnished either parallel or twisted. Specify which. NEMA dielectric test voltage on single conductors. 2.5 kilovolts. RBB 00344 }8 ..... = ROCKBESTOS - 600 VOLT SOLID A.V.C. SWITCHBOARD WIRE 1* 1. SOUP TIKNCD COfSM CONDUCTOR 3 i. VA4KHHIB CAMiaiC 4 ). FCLTCB ASStSIOS A. FLANCRSOOr COTTON (RAID 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 wall 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 wall 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) 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 on order. This also applies to Switchboard Cable, Hinge Cable and Bus Cable. Size A.W.G. 0000 000 00 0 1 2 4 6 8 10 12 14 16 18 TYPE AVB--TABLE B--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 12) Bare Diam. Nominal Thickness V, C. Nominal Thickness Felted Wall Nomina] Finished Diam.* Approx. Net Weight per M Ft. Star dard Shipping Lengths (F eet) Inches Mils Mils Inches Pounds Coils Reels .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 are average A tolerance of plus or minus S% is necessary due to variations in process of manufactureNEMA dielectric test voltages in kilovolts. 3.0 for sixes 18 to 8 and 4.0 (or 6 to 4/0. RBB 00345 f ROCKBESTOS 39 600 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 are 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'xard 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 on order. This also applies to Switchboard Wire, Hinge Cable and Bus Cable. TYPE AVB---TABLE BS--600 VOLT SERVICE (NEMA Standard No. 39-54 Table li) Size A.W.G. Stranding Tinned Bare Diam. Nominal Thickness V. C. Nominal Thickness Felted Wall Nominal Finished Diam.* Approx. Net Weight per M Ft. Stan dard Shipping Lengths (FeO Inches Mils Mils Inches Pounds Coils Reels 0000 19/.1055 .528 40 40 .735 835 500 000 19/.0940 .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 2018 7/.0151 .045 30 .185 23 1000 3000 Finished diameters given above are average. A tolerance of plus or minus S% is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts. 3.0 for sires 18 to 8 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 12 2 i. STSSHOIS TtKNtO COtftft COOUCTO* 1. flLltO UltlTOS S X. VMtMSKtS .* * 4. fllTtO tUtllOi X. H.MItF*OCr tOTtDX >IC 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. TYPE AVB--TABLE BH--600 VOLT SERVICE (NEMA Standard No. 39-54 Table 13) Sice A.W.G. Stranding Tinned Bare Diara. Nominal Thickness First Felted Wall Nominal Thickness V.C Insert Nominal Thickness Second Felted Wail Nominal Finished Diant.* Approx. Net Weight per M Ft. Standard Shippin( Lengths <F-et) Inches Mils Mil* Mils Inches Pounds Coils Reels 8 133/.0112 .168 10 105/.010 .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 34 500 2500 25 15 .200 27 1000 2500 25 15 .185 22 1000 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 2.5 kilovolts on *11 sizes. RBB 00347 ROCKBESTOS 600 VOLT A.V.C. SWITCHBOARD BUS CABLE 41 i 1. STRANBtO ASAIM COPACB COMBUCTO* ** I. PCLTCD A1SCSTOS *. VAIMISXBB Classic i 4. PCtTCB ASStSTOI I. FLAMtSSOOF BOTTOM SAAIO As Kockbestos 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 Rockbestos 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. Colors 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. TYPE AVB--TABLE P--600 VQLT SERVICE (NEMA Standard No. 39-54 Table 10 Size Stranding Bare Diem. Nominal Nominal Nominal ThtekncM Thickness Thickness First Felted V.C. Second Felted Wall Insert Wall Nominal Finished Diam.* Approx. Net Weight mT,. Standard Shipping Length (Feet) Indict Mila Mil. Mila Inches Pounds Coils 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 A.W.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 diameters given above are average. A tolerance of plus or minus $% is necessary due to variations in process of manufacture. NEMA dielectric test voltages in kilovolts, 2.5 for sizes 1* to . 3.0 for 6 to 4/0 and 4.0 for 250.000 to 1,000.000 CM. RBB 00348 42 ="' ROCKBESTOS Wired for Insurance against Fires RBB 00349 ROCKBESTOS Typical Rockbestos Wired Boards 43 Rockbestos Switchboard Wire is uniform in -finish. When future expansion necessitates additional wiring on this board, it will exactly match the existing wiring. kf*: Beautiful wiring jobs can be done with Rockbestos Switchboard Wire. Illustrating use of Rockbestos Hinge Cable. RBB 00350 44 ROCKBESTOS 600 VOLT SOLID National Electrical Code Type SNA SWITCHBOARD WIRE I2 J 4 I. fOUB TSMKCB COME* CO#UCTO Z. SVMTNCTIC ICSIN J. PCLTCP tIHITOt 4. rUP*0 COTTON 1**10 SYNTHETIC RESIN AND FELTED ASBESTOS INSULATION This new Rodcbestos Switchboard Wire, insulated with a Seamless synthetic sheath, felted asbestos and a flameproof cotton braid is resistant to beat, oil, grease, corrosive fumes and moisture. It skins easily, takes right angle bends without cracking, and is approved for applications in temperatures ranging up to 194F. The same insulation construction is also available in Rodcbestos Type SNA Switchboard Cable with coarse stranded conductor shown on page 4$, and Rodcbestos 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 in limited space, or "Standard'* (Table XBO) in the same diameters as Rodcbestos A.V.C Switchboard Wire, Table B shown on Page to permit perfect matching with previous wiring and a snug fit 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 Rodcbestos Type SNA Switchboard Cable and Hinge Cable. Sice A.W.C. Bare Diam. Inches Nominal Thwkneaa Synthetic Reein Mils Nominal Thickness Felted Asbestos Mila Nominal Thickness Cotton Braid Mils Nominal Finished Diam.* Inches Approx. Net Weight perM ft. Pounds Standard Shipping Lengths (Feet) Coils Reels TYPE SNA--TABLE XB--SMALL DIAMETER-- (NEMA Standard, No. 39-54 Table 14A) 8 .128 22.5 20 17.5 .250 10 .102 22.5 20 15.0 .220 12 .081 22.5 20 15.0 .200 14 .064 22.5 20 15.0 .185 16 .051 22.5 20 15.0 .170 18 .040 22.5 20 15.0 .160 75 54 39 30 24 19 500 500 500 500 1000 1000 TYPE SNA--TABLE XBO--STANDARD DIAMETER--(Same diam. as our Table B. NEMA Table 12> 8 .128 22.5 27.5 20 .270 10 .102 22.5 27.5 20 .245 12 .081 22.5 27.5 20 .225 14 .064 22.5 27.5 20 .205 16 .051 22.5 27.5 20 .195 18 .040 22.5 27.5 20 .180 79 56 42 31 26 21 500 500 500 500 1000 1000 1000 1500 2000 2500 2500 3000 1000 1500 2000 2500 2500 3000 Finished diameters given above ait average. A tolerance oi plus or minus i% is necesaary due to variations in process of manufacture. NEMA dielectric test voltage 3.0 kilovolts on all sizes. RBB 00351 = ROCKBESTOS = 600 VOLT STRANDED National Electrical Code Type SNA SWITCHBOARD CABLE 45 i* * I. STtANDCO TINNIO COFPt* COXDUCTO* l. STNTHtTIC SHIN }. KITIO AllUfOl 4. flAIIMOCF COTTOM SKID SYNTHETIC RESIN AND FELTED ASBESTOS INSULATION A new Rockbestos Switchboard Cable insulated exactly the same as Rockbestos 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 brai4, 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 Rockbestos Type SNA Flexible Hinge Cable shown on page 46. TWO DIAMETERS Available is two diameters. `'Small" (Table XBS) 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 A.W.C. Stranding Tinned Bare Diem. Inches Nominal Thickneas Synthetic Reein Nominal Thickness Felted Asbestos Nominal Thickness Cotton Braid Nominal Finished Diam.* Mil* Mils Mils 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/.03Q5 .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 "-r 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 o( plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric test voltage 3.0 Irilovolta on all lists. RBB 00352 46 ^ ==== = ROCKBESTOS 600 VOLT FLEXIBLE National Electrical Code Type SNA SWITCHBOARD HINGE CABLE 1 s < I. *TANBIB TINNtO CSPPf* COHDI/CTO* 2. *TKTH{TIC RESIN i. ftLTEB ASBESTOS i. TLABtfROOT COTTON SftaiO SYNTHETIC RESIN AND FELTED ASBESTOS INSULATION Insulated with a seamless synthetic sheath, felted asbestos and flameproof cotton braid just like its companion wires, Rockbestos 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 jumper 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 194*F. Match your board wiring by using it with either Rockbestos Type SNA Switchboard Wire shown on page 44 or Rockbestos Type SNA Switchboard Cable shown on page 43. 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 lit >n 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, size, quantity, type name, and table letters on your order. This also applies to Rockbestos Type SNA Switchboard Wire and Cable. Sice A.W.G. Stranding Tinned Bare Diam. Inches Nominal Thickness Synthetic Re*in 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 XBH--SMALL DIAMETER--(NEMA Standard, No. 39-S4 Table 15) $ 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/.010 .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/.010 .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 10Q0 20 .185 22 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 $% 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. ' "* 1 with Solid Plain Copper, Nickel or Monel Conductors t a HljilVlIfl I with Stranded Plain Copper, Nickel or Monel Conductor* An ail-asbestos stove wire designed for use in electric ranges, temp" or "Moistemp." Hi-temp impregnated insulation is heat laboratory ovens, cookers, hotplates, and many other electrical and flame resistant, whereas insulation impregnated with heating devices requiring 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 is 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 Moistemp compound is heat, flame and moisture resistant. Be sure to specify your preference for either "Hi-temp" or "Mois 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. Biack, white, red, blue or grey are the standard braid finishes. and additional resistance to heat and flame, or heat, flame and Other colored braids can be processed on special order. For the moisture, depending upon the impregnating compound used, "Hi- same construction types for 600 volt service see pages 48 and 50. Size 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 Diara. Nominal j j Thickness j * Felted Wall j Nominal Finished Diameter* Approx. Net Weight Per M Ft. Stan dard Shippini Lengths (FSCt) Inches .204 .182 .162 .128 .102 .081 .064 .031 .040 Mils 40 40 40 31 31 3i 31 3i is* i o< ;- u ; 9 , !8 1 i2 ; i :^ Inches .375 355 .335 .280 .255 .235 220 .205 .195 Pounds 177 148 124 78 56 43 33 27 23 Coils 500 500 1000 1000 1000 1000 1000 Reels 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 Utiekness Felted Wall Mils 40 40 40 31 31 31 31 31 31 1. C u K t 5ft < 's iZ $ Finished diameters given above are average. A tolerance of plus of minus Nominal Finished Diameter* Approx. Net Weight Per M Ft. Stan dard Shipping Lengths (Ft Inches Pounds Coils .405 183 .380 152 .353 128 500 .300 82 500 .270 59 1000 .245 44 1000 .225 35 1000 .210 28 1000 .200 23 1000 is necessary due to variations in process of manufacture. Reels tooo 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* * l. PUhtM COFPIR COMbUCtOR a. mnp unnu ). tllttrOI II4ID Asbestos rheostat wire was originally produced by put formed. That means that, through repeated heating and ting two or three braids of asbestos yam on the wire and cooling cycles, the compound can never fall away from finishing each braid with compound. This had several the asbestos. The dielectric strength and moisture resist disadvantages. For example, its moisture resistance was ance of Rockbestos Rheostat Wire are, therefore, practic very low due to the comparatively open covering so that ally constant. And there is none of the usual flaking many engineers considered that spaced wiring was neces when working with Rockbestos Rheostat Wire and Cable, sary in order to prevent possible leakage under damp with either white or black braid. conditions. The labor cost of doing this type of wiring Because of its comparatively high moisture resistance is high. Rockbestos Rheostat Wire may be bunch-wired with per Another disadvantage -- though really more of an fect safety. The illustrations on page 49 show several annoyance --- was that in working with this wire a good examples of rheostats bunch-wired -with Rockbestos deal of the compound flaked off and continued to do so Rheostat Wire and Cable in several of the country's large after the installation was completed, spoiling the appear power stations. ance of an otherwise nice job. Rockbestos Rheostat Wire is recommended for all m The Rockbestos development of the felted and im open work at 600 volts or less where wiring will be pregnated wall of asbestos insulation was a distinct im subject to heat, fumes, oil, grease or fire hazard. provement. Instead of a relatively open covering on the The insulation is generally impregnated with black wire, the asbestos is applied in the form of a homogene compound, but the braid finish can be either black or ous insulation. The dielectricstrengthistherebyincreased. white. Specify which. Colors may be furnished on Next, the impregnating compound is an integral part of special order. the insulating wall, not painted on after the wall is 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 Diam. Inches .460 .410 .365 -325 .289 .258 .229 .204 .182 .162 .128 .102 .081 .064 .051 .040 Felted Wall Mils 60 60 60 60 60 40 40 40 40 40 31 31 31 31 31 31 cr. .Nominal Finished Diam.* " SB Indies C b. .670 g .620 .575 C .535 SB .500 SB .430 SB hi .400 .375 c .355 u. .335 C .280 V. <r. .255 .235 * .220 .205 .195 Approx. Net Weight per M Ft. Pounds 761 620 477 388 316 248 202 167 138 121 79 58 42 34 28 24 standard Shipping Lengths (Feet) Coils 500 500 1000 1000 1000 1000 1000 Reels 450 500 500 500 500 1000 1000 1000 1000 1000 1000 1500 1500 2000 2000 2000 f.'I!isAedJ d,,arne'er* *>ven above ire average. A tolerance of plus or minui 4% it necetiary due to variationt in process of manufacture. NEMA dielectric test voltage l.S kilovolts on all sites. RBB 00355 ROCKBESTOS Typical Rockbestos Rheostat Wiring Installations 49 RBB 00356 50 ROCKBESTOS 600 VOLT ALL-ASBESTOS POWER AND RHEOSTAT CABLE same uses as table "a" wire MWHERE STRANDED CONDUCTOR IS REQUIRED ii > I. STtANDCO PLAIN COPPER CONDUCTOR *. PUTCD ASSCSTOS J. AAICSTOA BRAID This cable is National Electrical Code Type AI, listed by the Underwriters' Laboratories. Standard braid finishes ate black or white, colors on special order. Sice TYPE AI--TABLE R--600 VOLT SERVICE (NEMA Standard No 59-54 Table 2\) Stranding Bare Diam. Nominal Thickness Feked WaU Nominal Finished Diam.* Approx. Net Weight Pr M Ft. Star dsrd Shippini Lengths (F eet> Inches Mils Inches Pounds Coils Reels 1,000,000 CM 950,000 900,000 850,000 800,000 750,000 700,000 650,000 600,000 550,000 500,000 450,000 400,000 350,000 300,000 250,000 A.W.G. 0000 000 00 0 I 2 3 4 5 6 S 10 12 14 16 18 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 .045 120 1.485 120 td 1.455 120 1.425 120 1.395 120 < 1.365 120 K 1.330 120 2 1.295 120 1.260 120 1/5 1.225 120 S 1.185 120 1.145 120 < 1.105 120 m 1.060 120 120 ce & 1.015 .960 120 s .905 o 90 o .800 90 </> .740 90 u .690 90 z .645 90 .605 60 E .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 1000 1000 1000 1000 1000 1000 1000 J'lS"1.diameter* given Above Are average. A tolerance of plus or mimia S% it necessary due to variations in process of manufacture NEMA dielectric test volt*(e 1.5 kilovolts on *11 sixes 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 ti i nnitii tinmco eoc cokBueT i *. rtkice assutos j. tninM seats This cable has the sunt general uses as the solid and coarse stranded Rheostat Wires shown on pages 48 and 50. It is recommended wherever a flexible lead roust 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 53 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 haxard. 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) Sue Stranding Tinned Bare Diam. Felted WaU Finished Diam.* Approx. Net M Ft. Standard Shipping Lengths (Feet) 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 18 427/.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 133/.0158 133/.0141 133/.0112 105/.010 65/.010 41/.010 26/.010 16/.010 Incites .923 .878 .826 .772 .716 .653 .600 .536 .477 .424 .378 .336 .299 .266 .237 .212 .168 .120 .095 .075 .059 .045 Mils Inches 120 120 Vu) N 1.255 1.210 120 d 1.160 120 1.105 120 as 1.050 120 g .985 90 ih a90 3 90 90 < 90 a 60 te s60 u 60 60 o 60 40 V) 40 ti) 40 z 40 CJ E40 40 .870 .810 .750 .695 .650 .550 .510 .480 .450 .425 .340 .290 .265 .245 .230 .215 Pounds 1910 1735 1560 1385 1211 1035 860 708 581 482 407 290 240 203 166 140 92 65 49 38 31 27 Coils 500 500 500 1000 1000 1000 1000 Reels 500 500 500 500 500 500 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 * <1i*tr* given above are average. A tolerance of plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric test voltage i.S kilovolts on all tires. RBB 00358 52 .... - ROCKBESTOS ===== 300 VOLT EXTRA FLEXIBLE ALL-ASBESTOS APPARATUS CABLE MOTION PICTURE PROJECTORS, SUN ARCS, EFFECT MACHINES, HIGH TEMPERATURE LIGHTING FIXTURES, SPOT LIGHTS, ETC. . OP( LAY STANDC0 AUIK >-OYAt COMeuCTO* 1. rtLTIO tlltl'OI . UltlTOt **Al# 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 size 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. Rockbestos 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 an also be supplied with A.V.C. insulation as shown in Table L illustration on page 33. Six* A.W.C. 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) Stranding Bare Diaxn. Inches Nominal Thickness Felled Wall Mila J cr 5 eSi Nominal Finished Diam." Inches Carrying Capacity in Amps. Approx. Net Weight per M ft. Pounds Standard Shipping Lengths (Feet) 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 in 55 s 55 55 55 40 t 40 s 40 31 31 t 31 31 31 31 .8,5 .800 .750 .670 .625 .535 .450 .385 .320 .285 .255 .250 .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 Finished diameters given Above are average. A tolerance oi plus or minus 5% is necessary due to variations in process of manufacture. NEMA dielectric teat voltage 1.0 kilovolt for all sizes. RBB 00359 ROCKBESTOS 300 VOLT HEAT RESISTING FIXTURE WIRES far { LIGHTING FIXTURES, SMALL MOTOR LEADS, WIRING OF ELECTRIC RANGES, ELECTRIFIED OFFICE EQUIPMENT, RADIO APPARATUS, MINIATURE SWITCHBOARDS NATIONAL ELECTRICAL CODE TYPE AF -- PLAIN (NO BRAID) --Hi. White Asbestos Insulation Black Asbestos Insulation NATIONAL ELECTRICAL CODE TYPE AF--BRAIDED 53 Solid Color Braid Solid Color Braid with Marker Electrical maintenance men are frequently called on to BRAIDED type wires should also be used in pairs, the Tepair 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 dita on Rockbestos ORDERING INFORMATION Fixture Wires and Flexible Cords. Standard Packinc: Both Plain and Braided Fixture CODE REGULATION Article 410, Section 4139 of the National Electrical Code stipulates that fixtures operating at not more than 300 volts Wire are put up on metal spools snd in coils, snd where quantity warrants (5000'to 10,000 ft. depending on size! on ftetory reels. between conductors, which may be subject to temperatures Concurrent Windinc: When s Plain Black and a Plain in excess of 194* F,, (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 & 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 3S0 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 Rockbestos BRAIDED Fixture Wire is available in solid atmospheres. 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. TYPE AF--TABLE FS --300 VOLT SERVICE (NEMA Standard No. 39-54 Table 50) Size A.W.G. Minimum Wall Stranding Thieknea* Insul. Ave. Finished Diana.* Plain Ave. Finished Diam.* Cotton Covered Ave. Finished Duun.* Rayon Covered Approximate Net Weight per M feet Pounds Standard Shipping Lengths (Feet) Inches Inches Inches Inches 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 *iven above are averaft. A tolerance of plus or minus ** Not approved by the Undwwriters' Laboratories as fixture wire. is necessary due to variations in process of manufacture. RBB 00360 54 ROCKBESTOS 300 VOLT HEAT RESISTING FLEXIBLE CORDS PENDANT CORD LIGHTING FIXTURES, INSTRUMENT LEADS, GLUE POTS AND OTHER SMALL HEATING DEVICES TWISTED PAIR TABLE FA tVAXfC COTTON 01 AAT0N RAID N. E. CODE TYPE AFC DUPLEX--TABLE FR plain eeppt* conoucto* Assmot et katon i*ai N E. CODE TYPE AFPD ALAIN COAAIA CONOUCtOA N. E. CODE TYPE AFPD PLAIN COAACA CONOUCTOA ASItSTOS OA ALTON *AAI0 N. E. CODE TYPE AFPD These cords are useful for lighting pendants and for apparatus and test leads where a non-deteriorating heat resitting cord it required. . CODE REGULATION Article 410, Section 4139 of the National Electrical Code stipulates that fixtures operating at not more than 300 volts be tween conductors, which may be subjected to temperatures in excess of I94*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 $0 to 200s 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 pull 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 and thus crack and eventually cause short circuits. Rockbestos Duplex or Twisted Pair Cord it ideal for this purpose. The Twisted Pair and Triplex Cords hsve similar uses to the Duplex. The Triplex is for lighting fixtures having pendant outlet-twitches, two filament lamp fixtures, three heat appliances and leads for apparatus, meters tnd testing. POLARITY MARKING In the Twisted Pair Cord the marker thread in the braid of one wire indicates polarity. In Duplex end 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 shetl 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.C. Stranding Approx. Finished Diameter* Inches Cotton Braid Table Table Table FA FR FC Rayon Braid Table Table Table FA FR FC Approx. Net Weight per M Feet Pounds Cotton Braid Table Table Table FA FR FC Rayon Braid Table Table Table FA FR FC Standard Shipping Lengths (Feet) Spools Coils 10** 10 12** 12 14 16 18 105/30 105 '30 65/30 65 '30 41 .'30 26/30 16/30 .460 .490 .410 .440 .330 .300 .270 .435 .465 .385 .415 .305 .275 .245 .470 .500 .415 .445 -330 .295 .265 .440 .470 .390 .420 .310 .280 .250 .425 .455 .375 .405 .295 .265 .235 .460 .490 .405 .435 .320 .285 -255 104 111 74 80 45 33 25 102 109 72 78 45 33 25 151 161 106 115 66 49 36 101 108 72 78 44 32 24 100 107 70 76 43 31 23 148 158 104 113 64 47 34 250 250 250 500 500 500 500 500 500 500 * Finished diameters given above are average. A tolerance ol plua or minus 5% 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 ii I. mtNDCO PLAIN COPPCft JON6UCTO* PCLTtD ASItSTOS 9. ASltSTOS 1A!0 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 Mils 31 31 31 31 31 Nominal Thickness Asbestos Braid Mils 45 45 45 45 45 Two Conductor -- Table CA Nominal 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 PerM 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 oi plu* or minus S7r is necessary due to variations in process of manufacture. NEMA dielectric test voltage 1.0 kilovolt on all sites. RBB 00362 56 ROCKBESTOS 600 VOLT A. V, C FLEXIBLE CORDS 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 I. TAXOtO TIHNCO CONPUCTOft t l. FCITKO AtlttTOl VABKISKtO CANdie FCLTCO AOHT( S. AJtCtTOS IRAIO Rockbestos A.V.C. Flexible Cord was a natural to use in heat-developing electrical equipment and development of the AH-Asbestos Cab Cord and be high wattage lighting units that may be operated cause of its much higher insulation resistance found where moisture exists. Approved for these uses, with a special application in railroad locomotives equipped polarized conductors, by the Underwriters' Labora with train control apparatus. tories under a 300 volt rating as Style V flexible cord. This rugged cord has ample moisture resistance in If so desired specify on order. 1&F its combination of thoroughly impregnated felted For general extension use where cord may be asbestos and the embedded high-dielectric insert dragged over masonry and rough floors nothing is which makes up the familiar A.V.C. insulation. It better than a good rubber jacketed cord but in places has a heavy asbestos braid, the same heat-resistant and where it is exposed to heat, oil and grease such cords fireproof qualities as the All-Asbestos type and is often fail electrically before they wear out mechanic practically impervious to deterioration which ordinari ally. In such service Rockbestos A.V.C Flexible ly results from exposure to corrosive fumes or con Cord frequently lasts longer. tact with oil or grease. For high dry temperatures use Rockbestos All Rockbestos A.V.C. Flexible Cord should be used Asbestos Flexible Cord described on page 55. Both for the wiring of industrial type pendant lighting cords can be supplied with polarized conductors if so fixtures in hot locations where high humidity or mois ordered. If a perfectly round construction is desired it ture is prevalent. It is also the correct type of cord 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.a Approx. Net Weight Per M Ft. Standard Shipping Lengths (Coils) Nominal Finished Diam.* Approx. Net Weight PerM Ft. Standard Shipping Lengths (Coils) Mils 10 105/30 12 65/30 14 41/30 16 26/30 18 16/30 10 10 10 10 10 Mils 25 25 25 25 25 Mils 15 15 15 15 15 Mils 45 45 45 45 45 Inches .515 .470 .430 -390 .360 Pounds 134 101 79 64 41 Feet 250 500 500 500 500 Inches .565 .510 .465 .430 .400 Pounds 185 136 104 84 70 Feet 250 250 500 500 500 Finished diameters given above are average. A tolerance of plus or minus S% necessary due to variations in process ol manufacture. NEMA dielectric test voltage 2.S kilovolts on all siaes. RBB00363 ROCKBESTOS ^.. A.V.C. SIGNAL WIRE -- continued from page 58 59 Coarse Stranding TABLE SC--600 VOLT SERVICE--TABLE SF Flexible Stranding Size A.W.G. Stranding Tinned Bare Diaxn. Nominal Nominal Thickn'* Thickn'* Felted Braid V. C. Wall Thicknea* Nominal Approx. Finished Net Wt. Diem.* per M Ft. Standard Shipping Lengths (Feet) Coarse Flexible Incite* Mil* Mil* Mil* Inches Pound* Coil* Reels 0000 19/.1055 37/.0756 .528 40 40 000 19/-0940 37/.0673 .470 40 40 00 19/0837 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 5 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 * Finished diameters given above are average. A tolerance of plus or minus 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 is necessary due to variations in process of manufacture. 600 VOLT A, V. C. HEADLIGHT WIRE ( LOCOMOTIVE LIGHTING AND CONTROL CIRCUITS '' /Of 1 IN WHICH A SINGLE CONDUCTOR WIRE IS PREFERRED. IIS I. STItAHOtO TIMKCO coerce CONSUCTOa 2. VARNISHES CAUSAIC 4 1. FELTED ASSESTOS 4. rtAMtPAOOf COTTON ARAIO 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. C. Mil* Nominal Thickness Felted Wall Mils Nominal Finished Diameter* Inches Approx. Net Weight Per M Ft. Pounds Stan dard Shipping Lengths (Feet) 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 S% is necessary due to variations in process of manufacture. NEMA dielectric test voltage 2.S kilovolts on all sizes. RBB 00364 60 ROCKBESTOS A.V.C. AND ALL-ASBESTOS PYROMETER WIRE All-Asbestos Type Single Conductor -- Table YS A\V,<7 TypeT .. vr Single Conductor -- Table YC , I. CONDUCTOR 4 I. VttNlSHCS CaultlC * *. FtLTCS AS1UTOJ 4. ASBCSTOS MAIO 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 socalled "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 care 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 fior crack under temperatures that would be destructive to other types of insulation, neither will it rot 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 We offer Rockbestos Pyrometer insulation in two types the same aa 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 long runs, and generally subjected only to heat, oil or fumes and no more than casual moisture, the All-Asbestos insulation will be satisfactory. If the conduit run is both outside and inside heavy condensation is likely and in that 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 conductor! are stranded. Both are covered 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 u know site, 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 LOW VOLTAGE SIGNAL AN INTERCOMMUNICATING SYSTEMS, AUTOMATIC FUEL BURNER CONTROL, ETC. *1 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 dose 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 corners, 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 and 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 12i/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 metal braid covering mentioned in the fourth paragraph is an optional suggestion. Sice A.W.G. 16 16 16 16 18 18 18 18 20 20 20 20 TABLE TC Nominal Well Thkknewe* Ftaririied Diameters* (Indie*) Number of Conductor* For Low Vohaffe Sendee 115 Volt Service 12Vt Mil O. D. 25 MU O. D. 31 Mil O. D. Approximate Net Weight* per M Feet (Pound*) For [*v Voltage Service US Veh Service 12 Vj Mil 25 Mil 31 Mil 2 -175 .225 .265 35 43 47 3 .185 .240 .285 46 56 62 4 .210 .270 .315 58 69 79 5 .235 .305 .355 69 84 97 2 .155 .205 .245 26 34 37 3 .165 .215 .260 34 43 49 4 .180 .240 .290 43 53 61 5 .205 .275 .325 50 64 75 2 .135 .185 .225 21 28 31 3 .145 .200 .240 26 35 40 4 .160 .220 .270 32 42 50 5 .180 .250 .300 38 51 61 Standard Shipping Length* (Feet) Coils 500 500 500 500 500 500 500 500 500 500 500 500 Finished diameters given above are average. A toleranee of plus or minus 5% is necessary due to variations in process of manufacture. RBB 00366 62 ROCKBESTOS 125 VOLT A. C SECONDARY NETWORK CABLE t* 1. STftANBCD PLAIN C0PPC* CONOUCTOI t tPCCIAL fcOCKMfTOi INSULATION . LtAb SHCATN Rockbestos Low Voltage A.C. Secondary Network Cable was developed exclusively lor secondary network distribution systems but several utility companies have extended its use, where regulations permit, to include service installations in which limited space, high ambi ent temperature and emergency overloads must be considered. 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. If, instead of clearing at once, the insulation or the cable bums, produces smoke, generates toxic, inflam mable and explosive gases, experience has repeatedly shown that the arc is supported by the gas and smoke so that large amounts of cable and manhole equipment are sometimes destroyed. More important, the smokefilled manholes delay trouble crews in making repairs and restoring service. Under the worst fault conditions, whether single, two, or three-phase, loose or solid, Rockbestos A.C. Secondary Network Cable will dear deanly and quickly without burning or generating toxic, inflammable or explosive gases. It also definitely eliminates the smoke nuisance because neither the insulation, which is pure asbestos, nor the impregnating compounds will burn. 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 copper tem perature at which regulation difficulties would be experienced, determine the load the cable can carry. JOINT TAPE: We have developed an asbestos tape especially for this new secondary network cable. It has similar char acteristics to the new cable insulation so that its use is consistent with the use of Rockbestos A.C. Secondary Network Cable. Made in width, foil wrapped, 5 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/.UQ3 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 o plus or minus S% is necessary due to variations in process o< manufacture. RBB 00367 ROCKBESTOS FIREPROOF LOW VOLTAGE VAULT CABLE 6} i* 1 STIANOID PLAIN COPPC* CONOUCIOD a t (PCCIAL ICCIItlfCI INSULATION 4 J. SYNTHETIC WALL 4 ASOCSTOS ItAIO 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 Rockbestos 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 Sice 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/.U03 37/.1040 37/.0973 37/.0900 37/.0822 19/1055 19/.0940 19/.0837 19/.0745 Bare Diazn. Inches 1.632 1.412 1.152 .998 .814 .772 .728 .681 .630 .575 .528 .470 .418 .373 Nominal Thickness Felted Wall Nominal Thickness Synthetic Wall Mil* Mils 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 "S i in 2 2 | 9 r S X Nominal Finished Diam* Inches Approx. Net Weight Per M Ft. Pound* Maximum Manufac turing Lengths Feet 2.075 1.855 1.525 1.370 1.130 1.090 1.045 1.000 .950 .895 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 * Pinished diameters given above are average. A tolerance of plug or minus ia necessary due to variations in process of msnufacture. RBB 00368 64 ROCKBESTOS INDUSTRIAL HEATING CABLE the even distribution of MMILD HEAT OVER A LARGE AREA LtAB SHtATH MLT MIHfM SAICtAL ALLOY tilt Originally developed to provide a controllable heat source for forcing early plants in hotbeds, millions of feet of this beating cable is put in operation each spring by market gar deners, florists and amateur horticulturists. Industry too, has discovered that this unique heating 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, varmsh, ink, chocolate, molasses and sulphur, to name a few, can be kept at fluid temperatures, insuring against irregular flow and dogged conveyor pipes. Wet pipe sprinkler systems located in unheated areas are easiiy heated and kept at non-freezing temperatures that assure positive operation. 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 230 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 are 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 illtmrating industrial tad toil beating application!. Tell ua which you are interetted in.) Size A.W.G. Conductor Approx, Resistance Ohms per ft. TABLE LH Bare Diam. Nominal Thickness Felted Wall Inches. Mils Lead Sheath Inches Nominal Finished Diam.* Inches Approx. Net Weight per M Ft. Pounds Standard Shipping Lengths (Feet) 19 Nickel Chrome .50*5 .036 40 4/64 .245 60 and 120 198 and in bulk on reels * Pinifhed diameters given above are average. A tolerance of plua or ainua J% it nccetaary due to variations in proceas oi 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 iviring problems is suggested by the listing above, write to us or the district office nearest you, furnishing as much detail as possible and we will be glad to make a recommendation. ROCKBESTOS PRODUCTS CORPORATION V. O. Drawer 1102, New Haven 4, Connecticut, U. S. A. DISTRICT SALES OFFICES NEW YORK 17. 5942 Grand Central Terminal LOS ANGELES I). 520 East Third St. ST. LOUIS I. 12' Railway Exchange Bldg. CLEVELAND 14. 1159 Union Commerce Bldg. PORTLAND 4. ORE. 209 S. V. Fir-: Avc. SAN FRANCISCO 3, 567 Ninth St. CHICAGO 3, 1449 Field Bldg. BUFFALO 5. 564 Ellicot: >.j. Bldg. SEATTLE 4, 1714 First Avc., So. PITTSBURGH 19. 2157 Kopper- Bldg. Manufactured in Canada by Phillips Electrical Works. Ltd. and distributed by Automatic Electric (Canada) Limited. 2S4 King Street. Vest. Toronto Montreal--Brockville--Ottawa--Hamilton--Winnipeg--Regina--Edmonton--Vancouver Manufactured in England and distributed by Brin-h Insulated Cables. Ltd., Present. Lancashire Bulletin No. 10-E. SM. -45 Printed in United States oi 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--ROOM TEMPERATURE --NUMBER OF CONDUCTORS OR POWER FACTOR. BASED ON 3--1/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 size. If this point is between two vertical cable size lines, the line to the right of the point should b3 the cable size. Example: Find size cable required to carry 50 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= yy =200. Reading lrom Chart, the FACTOR M UNE for 200 intersects the 50 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 tor a 8 conductor intersects the 25 Ampere line to give a FACTOR M value of S7. Value of Vk from table for a 2-wire 110-volt circuit and 1% voltage drop is .5S0- Then the permissible circuit length is 57 x .550 =31.3 feet. RBB 00371 TO FIND MAXIMUM TOAD FOB ANY CABLE SIZE--CtBCUIT LENGTH--VOLTAGE CHOP \; . Divide known Circuit Length by value of Vk in table for type of circuit and circuit voltage to find FACTOB M. Follow line far FACTOR M thus found until it intersects the line for the known cable size and read the permissible Ampere'Load. Example: Find the maximum load in amperes that can be carried on a three-phase 440-volt circuit -using #2 conductor for a circuit length i 600 ieei and not exceeding 0% Voltage Drop. From tbe note under the table, the value oi Vk must be increased due to 3% voltage drop permissible 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.S4 z 3=7.62. FACTOR M will, therefore, be-fjjjj =78.7. Following FACTOR M line for 78.7 until it intersects tbe line tor a conductor the maximum Ampere Load is found to be 70 Amperes. . TO FIND THE VOLTAGE DROP FOR ANY LOAD--CABLE SIZE--CIRCUIT LENGTH , From chart, find FACTOR M from the intersection of the known cable size and load in amperes. Divide the Circuit Length by FACTOR M thus found and then divide this result by tbe value of 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. . v 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 ISO feet. From the chart. FACTOR M for the intersection of #2 conductor and 20 amperes is 295. Then dividing the circuit length o! 150 feet by FACTOR M thus found gives *|2&=1.016 volts drop. =.508. Then dividing this by value of k for a 2-wire circuit which is .5 gives TO FIND ABOVE VALUES FOR OTHER ROOM TEMPERATURES The current rating of conductors are reduced when operating at a room temperature above 30 *C. also if more than three- conductors are in the conduit. So in using chart be sure current value used or found does not sxcssd the value permitted by the National Electrical Code for these conditions. The accuracy of the chart may be affected as much as five percent when using these reduced current ratings, 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 of Current Ratings. Actually a separate table of Power Factor Correction Factors for conductors size 0 and larger should be given for each type of insulation. The maximum degree of error for 1000 MCM by using tbe single table below is only about 10 percent., and as 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 Raceway or Cable (Based on Room Temperature of 30*C. 86*F.) Paper Size AWG MCM Rubber Type RW TypsR Type r Synthetic Type SN Latex Type BU Rubber Type HPT TypeRP Rubber Type RHT Type RH Synthetic Type SNA Asbestos Var-Cam. TvpeAVB Var-Cam. Type V Asbestos s Var-Cam. Type AVA AVI - POWER FACTOR CORRECTION FACTORS 90S 80} 70% 60* 14 15 18 22 23 28 12 20 23 27 29 36 (0 25 3! 37 38 47 8 35 41 49 50 60 6 45 54 65 68 80 5 52 63 75 78 94 4 60 72 86 88 107 3' 69 63 99 104 121 2 80 96 IIS 118 137 1 9! 110 131 136 161 0 105 127 151 157 I9C 00 120 145 173 184 217 000 138 166 199 209 243 0000 160 193 230 237 275 .91 .91 .92 .92 .93 .95 .96 . .98 i.00 1.02 l.lt 1.15 1.20 1.28 .81 .82 .82 .83 .86 .87 .89 .91 .93 .96 1.09 1.15 1.22 1.32 .72 .73 .74 .75 .77 .79 .81 .63 .86 .89 I.OS 1.12 1.20 1.32 - .62 .62 .63 .65 .67 .70 .72 .74 .77 .81 .99 1.07 1.16 1.29 250 177 213 255 272 315 300 198 238 285 299 347 350 216 260 311 325 392 400 233 281 336 361 418 500 265 319 382 404 466 1.33 1.41 1.46 1.54 1.66 1.40 1.50 1.60 1.66 1.85 1.41 1.63 1.65 t.74 1.94 1.40 1.54 1.67 1.77 2.00 600 293 353 422 453 525 700 320 365 461 488 562 750 330 398 475 502 582 800 340 410 490 514 600 900 360 434 519 556 1.79 1.90 1.95 2.00 2.10 2.02 2.19 2.24 2.31 2.45 2.15 2.34 2.40 2.48 2.64 2.24 2.45 2.52 2.61 2.80 1000 377 455 543 583 681 2.18 2.57 2.79 2.95 1250 409 434 493 522 589 625 643 693 784 CONSTRUCTION NOTE 1750 451 544 650 733 All Voltage Drops based on resistance of conductor at actual 2000 463 558 666 774 '839 temperature of conductor for each value of Load Amperes. C F. CORRECTION FACTOR FOR ROOM TEMPERATURES OVER 30*C. Example: No. 2 Type R Rubber has a copper temperature of 50*C. 40 104 .71 .82 .86 .90 .94 with an 80-Ampere load and the resistance of the eon- 50 122 .00 .58 .75 .80 .87 ductor at this temperature is 0181 ohms per 1000 ft. 60 140 ... ...70 158 .00 .58 .67 .79 .35 .52 .71 For o load of 50 Amperes, the copper temperature is 40*C. and its resistance .0174 ohms pet 1000 It. ... ...60 176 ... ... ...90 194 ... ...100 212 .30 .61 The reactance values were calculated on a spacing of the outside .50 diameter oi the cable plus 10%, and for cable sizes 0 and larger, the reactance value was increased 50% to compensate lor the proximity effect and eUect of the iron conduit. ROCKBESTOS PRODUCTS CORPORATION NEW HAVEN CONNECTICUT RBB 00372 ED. HEERY, SALESMAN-BY-MAIL for ROCKBESTOS PRODUCTS CORPORATION NEW HAVEN, CONNECTICUT nchc 1 would this novel Heating Cable be useful to You? Rockbeicos Industrial Heating Cable 4/64* Waterproof Lead Sbeath Rockbestos Felted Asbestos insulation Special Alloy Resistance Heating Conductor TJERE'S a heating device all wrapped up in a small pliable cable that you can bend 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 it!" . . . 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 UAL HEATING CABLE 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 innyi'iV- 'iVi'* i ' . . . "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. 19A.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*4 per ft. ($55.10 per M) 240 to 599 ft. $.0614 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. RINT6D IN r. S A Rockbestos Products Corporation RBB 00376