Document bB1OJKNnXyraQ8V4NZKaD3Br0

ISP \//Y\ HV .mleN PLAINTIFF'S EXHIBIT UC-52HK ELECTRICAL INSULATION] Its Application to Shipboard Electrical Equipment by GRAHAM LEE MOSES Manager, Insulation Development Section Westinghouse Electric Corporation First Edition McGRAW-HILL BOOK COMPANY, INC. NEW YORK TORONTO LONDON 1951 FI JO h a. i  ?-ll least in of resin il" are ' of a ie ratio ions of : resins ao oil. nishes, dac is 2-11 CLASSES AND PROPERTIES OF INSULATING MATERIALS thermosetting resin which has a very from the air and drying to a solid film by de B stage. In the B stage it melts under the double process of oxidation and poly [ieat and can later be made to solidify by merization. This last term can be defined lymerization. This property is used in simply as a process where the glyceride e molding of slot portions of coils using changes by union of two or more of its |shellac-coated paper spacers and molding molecules into a compound having the same ihuca V rings. Spirit varnishes and lac elements in the same proportions but also quers dry chiefly by evaporation of the having a higher molecular weight and ilvent. Strictly speaking, varnishes are different physical properties. The heat and \not solutions but are colloidal in nature; oxygen produce the larger complex chem ^therefore, they present difficulties in filtra ical structures which thicken to form a tion and clarification as well as in storage, gelatinous or resinous mass. The degree being susceptible to temperature changes, to which the glycerides oxidize and poly \ humidity, contact with air, etc. merize depends on the type and constitu Air-drying varnishes are generally in- tion of the organic acids present. l ferior to baking varnishes in most essential Of the hundreds of drying oils which | insulating properties. In spirit varnishes have been isolated, there are just a few |r water is left in the film when the solvent which have been important for centuries in : 'evaporates. The gum may granulate, and varnish and enamel making. The chief ; the film is softer, holding small amounts of drying oils used in insulating varnishes are . solvents for a considerable time. In addi- linseed, perilla, and tung (chinawood) oils. . tion, these "spirit" varnishes are practically Linseed oil is the most familiar and the : useless as insulation, except in the role of oldest in history. It is derived from flax ; stickers, or binders for good insulating ma seed by pressing or solvent extraction. terial, such as mica, treated paper, and. Tung oil comes from a large nut resembling -SfsV?;v: cloth. In air-drying oil-gum varnishes, a huge horse chestnut, the fruit of the the very factor that causes their rapid hard Chinese tung tree. Linseed oil is much ening is ultimately the cause of failure. The slower drying than tung oil! and imparts driers,-which are incorporated in the for flexibility and life to films, whereas tung oil mula apd produce rapid oxidation, do not gives toughness and improved water and stop the hardening at the best possible place chemical resistance. It is most important but allow it to continue on until the film be that tung oil has the almost unique property comes brittle or weak. The same is true to of setting up rapidly to a gelatinous mass a much less extent with the synthetic resin throughout a very thick layer or film. This varnishes. is, of course, a very useful property for A drying oil is an extract from animal or coil-treating varnishes. Less oxygen and fish fat or from a vegetable seed or nut. heat are required for this change than with There are hundreds of such oils which bear linseed oil. Soybean oil is a newcomer to a very close chemical resemblance, but the field of paints and varnishes and may most of them are glycerides, i.e., a com be expected to become increasingly im bination of glycerin with organic acids portant in this field. having high molecular weight and a long The rate of drying of an oil is, of course, chain organic structure. These liquid glyc connected with the amount of oxygen it erides are capable of taking up oxygen can absorb, but it is not dependent upon 35 SHIPBOARD ELECTRICAL INSULATION 2-11 this factor alone. The rate also depends hard, brittle resin which melts at 80 or 90 C. upon temperature, light, moisture condi It has a wide range of application, but for tions, and small quantities of accelerating varnishes its use alone is limited by its soft catalysts, called driers. Driers are used ness and lack of durability and its high with drying oils to accelerate the conversion acidity. of liquid to solid form. They are most Ester gum, which stands midway between important for air-drying varnishes, since the natural and synthetic resins, is a product they bring about the setting of the film of the high-temperature reaction of rosin within a reasonable number of hours rather and glycerin. It is much less acid than than days. Driers are organic salts of rosin and more weather resistant andplastic. metals, _such as cobalt, manganese, and In the last 25 years synthetic resin de lead, which act as oxygen carriers or velopment has produced outstanding resins catalysts and greatly speed up the poly of several types which are replacing natural merization. Very small amounts (a few resins in most applications where quality, tenths or thousandths of a percent) are uniformity in composition and perform sufficient for maximum effect. Too much ance, and ease of manufacture are factors. drier often impairs durability and life of the The more important and successful types film or may act as a retarder rather than an now in use are the phenol-formaldehyde accelerator. Besides the drying oils, there type (of which Bakelite is perhaps the best are also the semidrying and nondrying oils, known example) and the alkyd type. The in which this property of picking up oxygen chemistry of these resins is elaborate and and drying to a hard film is less marked or complicated, but the simplest phenol-form nearly absent. These oils, of which castor aldehyde resins are made by combining a oil is an example, are used largely in phenolic body, such as carbolic acid, with finishes, where they act as plasticizers or an aldehyde to form a hard resin. Proper flexibilizers for the film. choice of phenol and aldehyde gives a resin The natural resins, or "gums," now fast which can be blended, just as natural resins being superseded by synthetic materials, in are, with drying oils. The simplest alkyd clude shellac, rosin, Kauri, Manila, Congo is a combination of glycerin with phthalic copal, and many others, most of which are acid, but the more useful alkyd resins have found in India or the East Indies. They drying oils combined chemically in the are gums or pitches which exude from trees, resin itself. Both of these type resins can bugs (in the case of shellac), or fossil accu be so formulated that application of heat mulations which come from fossilized trees. causes a permanent hardening of the resin Shellacs and copals, especially, are graded to an infusible state by the process known according to hardness and solubility, but as heat polymerization. they vary considerably in the amount of dirt Alkyd-type resins, especially those modi and impurities they contain and from lot fied with drying oils, have developed during to lot in properties and workability. It was the past two decades into some of the most this lack of uniformity and difficulty of important synthetic raw materials for fin handling which gave synthetic or chemically ishes and coating because of their out prepared resins their chance. standing gloss, adhesion, and durability. Rosin is a product of pine pitch' from Especially important are the applications which turpentine is also obtained. It is a in metal priming and coating, outdoor 36 t -- ~ ^-ll. ;o c. 3 ut for by its softd its high ly between : a product n of rosin acid than nd'pLastic. resin deiing resins ng natural e quality, performre factors. -:sful types naldehyde >s the best :.pe. The orate and :nol-form- oper res a resin -ral resins lest alkyd phthalic -`sins have y in the .`esins can o of heat the resin :;s known ;se modid during the most s for finheir outt: ."ability, fixations outdoor hit CLASSES AND PROPERTIES OF INSULATING MATERIALS Jshes, automotive and structural finishes, dit-colored enamels, and printing inks, jjitil recently, applications of alkyd for ation were limited by the electrical froperties and moisture and heat resist^ce as well as through-curing properties, hese properties have been improved mark- y, and greater use is constantly being ade of alkyds as insulating materials to Pqplace the old black varnishes and com pounds. I Melamine resins are a new group of high|rade thermosetting compounds. They are ised in very much the same manner as henolic resins for making laminates and inolded compounds. In their final poly merized form, these resins are not soluble in ifWater or alcohol and are highly resistant to finost organic solvents. Melamines are use;fful in imparting hardness and toughness, as Iwell as fast-drying properties, to other ^varnishes. During the war, submarine fires caused deaths which were attributed to the toxic fumes from phenolic resins. Glassmelamine laminates were substituted on m both control apparatus and rotating elec trical machinery on a large scale. Mela mine resins are also used in combination with-asbestos as well as cotton fabrics and paper to make laminates and molded parts. These products combine good arc resistance with tracking, moisture resistance, thermal stability, and low inflammability. It is ex pected that this type of resin and products employing it will become increasingly useful in the electrical industry. Other important synthetic resins include the Amberols and Cumar, both similar to the phenolic type. There is a rapidly growing list of synthetic resins, some of which hold promise for future develop ments. The field is so large that it cannot be covered in this manual. Some of the newer resins may be of interest, how ever, and they will be briefly mentioned below. The vinyl resins are derivatives of ethyl ene and acetylene, with strongly polymeriz ing characteristics. These polymers are becoming increasingly important in the plastics and coatings field, including that of synthetic rubbers and rubber substitutes. Most of these materials are thermoplastics, do not set up or cure with heat alone, and many are very tough and chemically re sistant. The simplest vinyl compounds are the alcohol, the chloride, and the acetate. Polyvinyl chloride is highly insoluble and flame resistant. Polyvinyl acetate is soluble in the proper solvents and thermoplastic. So-called copolymers of these have all manner of intermediate properties. These resins have wide uses, from adhesives and chemical-resistant coatings for food con tainers (Gelvas, Vinylites) to rubber substi tutes and artificial silk (Vinyon, Koroseal). If polyvinyl acetate is hydrolyzed and treated with formaldehyde, a very useful group of resins results. These resins are in soluble in most solvents and chemically quite inert as well as being very tough and strong. Formvar is one of a class of resins called polyvinyl acetals. As a film-forming material it has the disadvantages of nitro cellulose and cellulose acetate. Its solu tions have high viscosity, adhesion is poor, and the thermoplastic film dries by solvent evaporation only. Vinyon is a synthetic silk made from the copolymers of vinyl chloride and acetate similar in properties to nylon, which is a complex material more closely related to the alkyds in structure but having many similar properties to the vinyl polymers. Silicone resins are a recent development and are applicable to class H insulation, where high thermal endurance is required. SHIPBOARD ELECTRICAL INSULATION 2-U The chemical nature and background are given in more detail in Sec. 2-14. These varnishes are available in a wide range of properties. It is theoretically possible to reproduce the general characteristics of all the organic varnish types in the silicone type of varnish. Silicone resins have good electrical properties to supplement their outstanding thermal endurance. Their physical properties are usually somewhat inferior to their organic resin counterparts. This is partly attributable to their slow cure except at very high temperatures. Inten sive activity is under way for further devel opment and evaluation of silicone resins and varnishes containing them. However, those now available commercially have many uses when applied with knowledge of their properties and limitations. Silicone resins have been developed in two general classes. One is the insulating type which is comparable in most properties to the oleoresinous varnishes so long gener ally used for electrical insulation. There are two varieties of this class. The first such varnish requires baking temperatures sufficiently high (200 to 250 C) as to pro hibit its use on organic materials such as paper, cotton, and silk, and it should be used only on inorganic materials such as glass fiber, asbestos, mica, or ceramics. Tlie second variety, which was developed later, is comparable in general properties hut dries to a tack-free condition at 150 C. Complete cure, by chemical reaction, re quired further baking at temperatures of 200 to 225 C, which improves its film hard ness and strength at elevated temperatures. Both varieties are being used to treat glasscovered magnet wire, to coat fiber-glass cloth, and as a binder for building up flexible mica-glass-laminated sheet. They arc also used as the final impregnating and coating varnish to bind together the individ ual machine components and waterproof the complete assembly. Another type of silicone resin corresponds in general be havior to the organic thermosetting resins normally used to make rigid laminated insulating parts. These thermosetting sili cone resins are being used to bond fibrous glass and asbestos.laminated structures and to bond special coils requiring hardness and rigidity. A simple but significant property of all silicone compounds is their resistance to moisture. Silicone varnish films transmit moisture vapor at about the same rate as organic varnishes, but water does not easily wet silicone-resin-treated surfaces. There fore, conducting films of moisture are far less likely to form than under similar atmos pheric conditions on conventional organicresin-treated surfaces. The importance of this characteristic is hard to evaluate in gen eral terms, but it is apparently of consider able significance on shipboard electrical equipment. For black varnishes, the asphalts or pitches play the same role as the resins do in the case of the clear varnishes and may be used together with resins. Among natu rally occurring asphalts (which are mined, much as rock minerals, from veins) are gilsonite, a hard brittle, substantially pure asphalt, and various softer, more plastic ma terials, such as the famous lake of asphalt in Trinidad. Various pitches are also avail able. These are the end products of the distillation of petroleum, coal tar, wood, and various vegetable oils and fats, chief of which is stearin pitch. The pitches vary gready in solubility and melting point or flow point. Some may be modified to give increased elasticity and stability by blowing with hot air. Their stability in a varnish blend depends greatly upon the cooking and upon the thinner used. 8 2-11 12-12 CLASSES AND PROPERTIES OF INSULATING MATERIALS The literature abounds with contradictory little or no thinner. They may be resins,' 'tatements as to the value of asphaltic ma- asphalts, waxes, or varnish bases or blends ierials. They are susceptible to oxidation of these materials with or without fillers, nd are affected by light and heat, failure such as talc, silica, quartz sand, mica dust, ccurring by the progressive development slate, asbestos, glass fibers, and whiting. f fine cracks. When the film is intact, the They are generally classified as to their asphalts are excellent in acid and moisture uses as sealing, filling, or treating com ifcirepellance but are very soluble in oils. pounds. ien added to clear varnishes, asphalts etard the drying considerably unless they 1. Sealing and Filling Compounds. Sealing are used in sufficient quantity to give addi and filling compounds are used for protec tional hardness themselves. tion of windings and for filling cavities in The correct terminology for paints and metal, porcelain, and other materials to Varnishes has been outlined in Fig. 2-3. exclude moisture, dust, and dirt. They One outstanding exception to those defini may be either solid compounds which are tions should be noted. Varnishes used for melted and poured in place, solidifying on coating wire are usually called "wire en cooling, or plastic or puttylike compounds amels" though they contain no pigment. such as are used in armature and field Oleoresinous varnishes have been used for coils. These compounds gradually set to years for coating magnet wire. a firm condition, with or without heat, ac Synthetic resin enamels have been de cording to the particular compound. For veloped which are fast displacing the drying- filling cavities, etc., it is important that the oil varnish-type wire enamel. An impor shrinkage, especially at low temperatures, tant synthetic wire enamel is a polyvinyl be as low as possible or as nearly as possible acetate which is hydrolyzed and treated like that of the material with which the with formaldehyde to produce a class of compound is in contact and that the ad resins called polyvinyl acetals. This resin hesion be good and cracking eliminated. is insoluble in most solvents and is chemi For sealing compounds used on windings, cally inert as well as being tough and impact strength, thermal conductivity, and Bt strong, I* It has a high viscosity in solution aging at elevated temperatures are also im form, ahd the thermoplastic film dries by portant requirements in certain applica solvent evaporation only. This type of resin tions. when used as a wire enamel produces a very 2. Treating Compounds. Treating com tough insulation which can withstand severe pounds find an extensive use in a solidified winding abuse. It also has the great ad mass from which moisture and air are vantages of relative freedom from heat excluded. Coils from which all moisture shock and good thermal endurance for a has been exhausted by a vacuum process are class A material. It is less susceptible to filled with melted pitch compounds and softening by varnish solvents than are con rendered rigid and moistureproof. A com ventional varnishes. pound for this application should be suffi lilb- 2-12. INSULATING COMPOUNDS ciently tough to withstand rough handling and have a uniform flow point, a high Under this heading are listed solid, plas degree of fluidity, and high penetration at tic, or semiliquid materials which contain the treating temperature. 39 Appendix I. electrical INSULATING MATERIALS -- DESCRIPTION AND STOCK LIST This appendix lists available Navy insulating materials and gives general identifying information. It has been prepared for the purpose of assisting shop personnel in the selection of the correct electrical insulating ma terials for the maintenance and repair of electrical equipment. All materials as listed have been taken from the General Stores Section of the Catalog of Navy Material as follows: Class 15, Group 4, Magnet Wire; Class 17, Group 22, Electrical Insulating Materials; Class 52, Insulat ing Varnishes. As this appendix is to be used only as a guide and for ready reference purposes, all ordering of materials should be made from the Catalog of Navy Material, which contains the latest ordering information, stock number and item changes, and general instructions. Insulation, Electrical, Sheet An electrical insulation item consisting of (1) condensed fibers, natural or synthetic, in sheet fom such as paper, fibre, or glass (usually short fibers); (2) natural or synthetic rubber with or without reinforcement; or (3) a rein forced flat laminated (plastic) composite structure. PAPER AND FIBRES Fish Paper (Scot Ceix) Spec: JAN-I-695 Insulation Class O Type F. An extremely tough, strong, dense fish paper made from chemically treated cotton rag stock. Available in roll form, 100 pounds per roll, in widths from 36 to 60 inches and in sheet form 36 X 36 inches minimum to 60 X 88 inches maximum. Unit of Issue: Pound Approximate cost: $0.50 per pound Stock No. Thickness, in. Type F, Form R (Rolls): G17-I-4500 G17-I-4505 G17-I-4510 G17-I-4520 Type F, Form S (Sheets): G17-I-4530 G17-1-4540 G17-I-4550 0.005 0.007 0.010 0.015 0.020 0.025 0.030 217 Sq ft per lb 28.12 20.08 14.06 9.56 7.00 5.60 4.70 t SHIPBOARD ELECTRICAL INSULATION Rag Paper Spec: JAN-I-695 Insulation Class O Type R. An extremely tough, dense, strong rag paper made from 100 percent selected cotton rag stock not chemically treated. Available in sheet form 36 X 36 inches minimum to 60 X 88 inches maxi mum. Unit of issue: Pound Approximate cost: $0.70 per pound of chemically gelled paper stock having excellent ma chining qualities, arc resistance, and toughness and a specific gravity of not less than 1.30. Available in sheet form in sizes from 30 X 55 inches minimum to 60 X 84 inches maximum. Unit of issue: Pound Approximate cost: $0.50 per pound Stock No. Thickness, in. Lb per sq ft Stock No. Thickness, in. Sq ft per lb G17-I-2130 M2 0.212 G17-1-2140 Me 0.423 G17-I-4655-50 0.005 23.60 G17-I-2150 M2 0.635 G17-1-4655-100 0.007 16.90 G17-I-2160 M 0.846 G17-1-4655-200 0.010 11.80 G17-I-2170 Me 1.269 G17-1-4655-300 0.015 8.30 G17-I-2180 M 1.692 G17-I-4655-400 0.020 5.90 G17-I-2190 Vs 2.538 G17-I-4655-500 0.025 4.72 G17-I-2200 M 3.384 G17-I-4655-600 0.030 3.96 Pressboard Spec: JAX-I-545 Insulation Class O A dense, flexible, easily worked pressboard material made from rag stock. Has 300 volts per mil average dielectric strength. Available in sheet form, 30 X 36 inches minimum to 36 X 42 inches maximum. Unit of issue: Pound Approximate cost: $0.30 per pound .Stock No. Thickness, in. Sq ft per lb G17-I-46C0 G17-I-461Q G17-I-4620 G17-1-4630 G17-I--1640 - G17-1-4650 G17-I-4650-125 0.010 0.015 0.020 0.025 0.030 0.060 0.125 16.00 10.66 8.00 6.40 5.33 2.66 1.33 HaSid Fibre Spec: JAN-F-1148 Grade BH (Bone Hard). Insulation Class O A high-density material Vulcanized Fibre Spec: JAN-F-1148 Insulation Class O Grade CH (Commercial or Vulcanized). A dense material of chemically gelled paper stock similar to bone hard except specific gravity is in the order of 1.10. Available in sheet form in sizes from 30 X 55 inches minimum to 60 X 88 inches maximum. Unit of issue: Pound Approximate cost: $0.70 per pound Stock No. G17-I-2320 G17-I-2330 G17-I-2340 G17-1-2350 G17-I-2360 G17-1-236t G17-1-2362 Thickness, in. Lb per sq ft Ye 3.148 M 4.102 Vs 4.785 1 5.47 m 6.152 1M .6.8360 \M 8.2029 LAMINATES Paper Base, Form S Has good electrical properties under high-humidity Spec: MIL-P-3115A Insulation Class A Type P3E. A natural-color, paper-base, phenolic conditions. Arc resistance and fire resistance are poor. Available in sheets in sizes between 36 and 50 inches in width and between 36 and 96 inches in laminate for use in radio-frequency applications. length. 218 t :c. ma rless and a /ailable in ini mum to :ost: $0.50 per sq ft 0.212 0.423 0.635 0.846 1.269 1.692 2.538 3.384 n Cl' O jC t0 order of -. 30 X 55 ost: $0.70 ~er sq ft !48 .102 "35 ; 52 .3360 .2029 -humidity ta.'ce are 36 and 50 inches in APPENDIX I. DESCRIPTION AND STOCK LIST Type PBG. A general-purpose, natural-color, paper-base, phenolic laminate combining fairly good electrical and mechanical properties. Arc resistance and fire resistance are poor. Available in sheets in sizes between 36 and 50 inches in width and between 36 and 96 inches in length. Unit of issue: Pound Approximate cost: $1.00 per pound good electrical and mechanical properties. Arc re sistance and fire resistance arc poor. Available in sheets in sizes between 36 and 50 inches in width and between 36 and 96 inches in length. Unit of issue: Pound Approximate cost: $1.20 per pound Stock No. Thickness, in. Lb per sq ft Stock No. Thick Lb per ness, in. sq ft Type PBE (Paper-base Electrical): G17-I-5636-50 G17-I-5636-70 G17-I-5636-80 G17-I-5636-90 G17-I-5636-UO G17-I-5636-130 G17-I-5636-140 G17-I-5636-150 G17-1-5636-170 GU-I-5636-180 GU-I-5636-190 G17-I-5636-200 G17-I-5636-210 G17-1-5636-230 G17-I-5636-250 Type PBG (Paper-base General): Hi Ke Hi H He X He X X X X X 1 IX IX 0.22 0.44 0.66 0.88 1.33 1.77 2.12 2.66 3.54 4.42 5.32 6.20 7.08 8.85 10.63 G17-1-5531-125 G17-I-5531-175 G17-I-5531-200 G17-I-5531-225 G17-I-5531-275 G17-I-5531-325 G17-I-553I-350 G17-I-5531-375 G17-I-5531-425 G17-1-5531-450 G17-I-5531-475 G17-I-5531-500 G17-1-5531-525 G17-I-5531-550 G17-I-5531-575 G17-1-5531-600 G17-I-5531-625 G17-I-5531-650 G17-1-5531-675 G17-I-5531-700 G17-I-5531-725 Hi He Hi X He X He X X X X X 1 IX IX IX \x IX lX IX 2 0.22 0.45 0.67 0.90 1.35 1.80 2.25 2.70 3.60 4.50 5.40 6.30 7.20 8.10 9.00 9.90 10.80 11.70 12.60 13.50 14.40 - G17-14-5700-50 G17-1-5700-70 Gl72f-5700-80 G17-I-5700-90 G17-1-5700-110 G17-1-5700-130 G17-1-5700-140 G17-1-5700-150 G17-1-5700-170 G17-1-5700-180 G17-1-5700-190 C. 17-1-5700-200 G17-I-5700-210 G17-I-5700-230 G17-1-5700-250 Hi 0.22 He 0.44 Hi 0.66 X 0.88 He 1.33 X 1.77 He 2.12 X 2.66 X 3.54 % 4.42 X 5.32 X 6.20 1 7.08 1M 8.85 1H 10.63 Glass Base, Form S Spec: MIL-P-15037 Insulation Class B Type GMG. A general-purpose, glass-fabric-base, melamine resin laminate combining good electrical properties with high mechanical strength. Has ex cellent fire- and arc-resistance properties. Available in sheet in sizes between 36 and 50 inches wide and between 36 and 96 inches in length. Unit of issue: Pound Approximate cost: $2.40 per pound Spec: MIL-P-997 Insulation Class H Type GSG. A general-purpose, glass-fabric-base, silicone resin laminate combining excellent electrical properties with high-temperature resistance. Me chanical strength is good, and fire- and arc-resistant F.caatc Base, Form S properties are high. Available in sheets in sizes be tween 36 and 50 inches wide and between 36 and 96 Spec: MIL-P-3114A Insulation Class A inches in length. Type FBG. A general-purpose, natural-color, Unit of issue: Pound Approximate cost: $7.50 c.'ttr,n-fabric-base, phenolic laminate combining fairly per pound 219 SHIPBOARD ELECTRICAL INSULATION Stock No. Type GMG (Glass Melamine General): G17-1-5765-5 G17-I-5765-10 G17-I-5765-15 G17-I-5765-20 G17-1-5765-25 G17-I--5765-30 G17-I-5765-35 G17-1-5765-40 G17-1-5765-45 G17-1-5765-50 G17-I-5765-55 G17-1-5765-60 G17-I-5765-65 G17-I-5765-70 G17-I-5765-75 G17-I-5765-80 G17-I-5765-85 G17-I-5765-90 G17-I-5765-95 G17-1-5765-100 G17-I-5765-105 Thick Lb per , ness, in. sq ft Stock No. Kz M.6 Kz Ve He K He Vs Vi Ye K Ve 1 We IK W m W IK m 2 0.31 0.62 0.93 1.24 1.86 2.48 3.10 3.72 4.96 6.20 7.44 8.68 9.92 11.16 12.40 13.64 14.88 16.12 17.36 18.60 19.84 Type GSG (Glass Silicone General): G17-I-5764-31 G17-1-5764-62 G17-1-5764-93' G17-I-5764-125 G17-I-5764-187 Gt7-1-5764-250 G17-I-5764--312 G17-I-5764--375 G17-1-5764-500 G17-I-5764-625 G17-I-5764-750 G17-I-5764-875 G17-I-5764-1000 G17-I-5764-112S G17-I-5764-1250 G17-1-5764-1375 G17-1-5764-1500 G17-1-5764-1625 G17-1-5764-1750 G17-I-5764-1875 G17-I-5764-2000 Thick Lb per ness, in. sq ft Kz He He H He K He Ve H H KVe 1 We IK We W2. We IK We 2 0.20 0.40 0.60 0.80 1.20 1.60 2.00 2.40 3.20 4.00 4.80 5.60 6.40 7.20 8.00 8.80 9.60 10.40 11.20 12.00 12.80 PASTED MICA Spec: HH-I-538 Insulation Class B Class P\{, Form S Stock No. Type PMF (pasted mica, flexible) is suitable for forming or being applied onto ordinary shapes without any application of heat. Average short-time dielec tric strength, 525 volts per mil. Type PMM (pasted mica, moldable) is capable of being molded into special shapes and forms when heated to a temperature of 135 C. The molded form is retained upon cooling to room temperature. Aver age shon-time dielectric strength, 600 volts per mil. Type PMR (pasted mica, rigid) is capable of being safely bene to an 18-inch radius of curvature with no detrimental effects. Average short-time dielectric strength. 600 volts per mil. Furnished in sheets 18 Type PMF: G17-1-3340 G17-I-3350 G17-1-3360 G17-1-3370 G17-1-3380 G17-1-3390 G17-1-3400 G17-1-3410 G17-I-3420 G17-I-3430 inches wide and 36 inches long. G17-I-3440 Unit of issue: Pound Approximate cost: S3.00 G17-I-3450 per pound 220 Thickness, in. Approx, sq ft per lb % 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.0375 0.040 0.045 0.050 0.125 16.48 9.00 6.12 4.74 3.90 3.10 2.68 2.57 2.41 2.05 1.88 0.75 t APPENDIX I. DESCRIPTION AND STOCK. LIST Stock No. Type PMM: G17-I-2650 G17-I-2660 G17-I-2670 G17-I-2680 G17-I-2690 G17-1-2700 G17-I-271C G17-I-2720' G17-I-2730 G17-I-2740 G17-1-27 50 G17-1-2760 Approx, Thickness, in. sq ft per lb 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.0375 0.040 0.045 0.050 0.125 16.95 8.47 5.65 4.10 3.22 2.60 2.45 2.25 1.95 1.72 1.51 0.59 Stock No. Type PMR: G17-I-2920 G17-1-2940 G17-1-2950 G17-I-2960 G17-1-2970 G17-1-2973 G17-1-2976 Thickdfes, in. Approx, sq ft per lb 0.020 0.025 0.030 0.035 0.040 0.045 0.050 6.43 5.14 4.28 3.67 3.21 2.85 2.57 MIGA-GLASS COMBINATIONS Spec: 17-1-A2 Class B, Firm S, with organic varnish Class H, Form S, with silicone varnish Type CMC {Glass-Mica-Glass). Consists of pasted mica sandwiched between single layers of glass cloth. Type MG {Mica-Glass). Consists of pasted mica laminated with one layer of glass cloth. Type PMC {Paper-Mica-Glass). Consists of pasted mica laminated with one layer of thin paper on one side (fod mechanical support) and one layer of glass cloth on the other side. The above three types of material are used for motor, generator, and transformer coils, slot liners, "ground insulation, phase-to-phasc insulation, primary and secondary separation, coil exteriors, cable splices, coil and cell wrappers, and similar uses. It has high dielectric strength. Unit of issue: Square yard Approximate cost: 810.00 per square yard Stock No. Class B, Type GMG: G17-I-4235-320 Class B, Type MG: G17-I-4232-175 Class B, Type PMG: G17-I-4235-650 G17-I-4235-675 Class H, Type GMG: G17--1-4235-400 G17-1-4235-420 Class H, Type MG: G17-I-4232-150 Thickness, in. 0.012 . 0.010 0.007 0.015 0.010 0.012 - 0.007 Insulation, Electrical, Cloth An electneal insulation item consisting of woven fabric of natural or synthetic fibers such as cotton, silk, rayon, glass, asbestos, or nylon, usually in widths of over 8 inches; may be plain, impregnated, or varnished. CLOTH Cotton Fabric (Untreated) per inch and may be readily impregnated with in Spec: Mil.-1-3042 Insulation Class O sulating varnish. Available in 25- or 50-yard rolls of Type CFG. A cotton-fiber cloth, relatively clean 35-inch width trimmed. and free deleterious substances. Has a balance Unit of issue: Yard Approximate cost: 80.80 weave of not less than 68 or more than 72 threads per yard 221 SHIPBOARD ELECTRICAL INSULATION Stock No^ Thick Oz per ness, in. sq yd Stock No. Thickness, Oz per sq in. yd Type CFU (Cotton Fiber Untreated): G17-I G17-I (numbers not available) G17-I G17-I., 0.005 0.007 0.010 0.012 2.40 2.80 2.80 2.80 Type 4RU (Reinforced, Untreated): G17-I-1500-30 G17-I-1500-90 G17-I-1500-150 0.025 0.035 0.045 15 18 20 Varnished Cambric Spec: I7-C-8 Insulation Class A Type A. A uniform, square-woven, clean, cotton cloth coated with a high-grade slow-drying baking varnish. Has a smooth, high-gloss surface free from wrinkles and creases. Available in trimmed widths of 35 inches in rolls of 50 yards. Unit of issue: Square yard Approximate cost: $1.00 per yard Stock No. Dielectric Thickness, in. strength, volts Type A: G17-I-1620 G17-1-1640 0.007 0.010 5,600 8,000 Asbestos Fabric (Untreated) Spec: MIL-I-3053 Insulation Class C Type 4PU (Plain, Untreated). An asbestos-fiber cloth made from high-grade, long-fiber asbestos uniformly woven and free from knots, lumps, and unsightly defects and containing not less than 85 per cent by weight of pure asbestos. Available in rolls 36 inches wide. Type 4RU (Reinforced, Untreated). Same as type 4PU except stronger. Unit of issue: Square yard Approximate cost: $2.00 per square yard Stock No. Thickness, Oz per sq in. .yd Type 4PU (Plain, Untreated): Glass Fabric (Untreated) Spec: MIL-I-1140 A Insulation Class C Type GFU. A high-grade electrical cloth made from either continuous filament or staple fiber glass furnished in rolls 50 to 300 yards long in 38-inch widths. Unit of issue: Square yard Approximate cost: $1.50 per square yard Stock No. Cloth Thick Oz per sq No. ness, in. yd Class CF, Continuous Filament: G17-I-2644-300 G17-1-2644-305 G17-I-2644-310 G17-1-2644-315 G17-I-2644--320 Class SF, Staple ' Fiber: G17-I-2644-400 G17-I-2644--405 108 113 128 141 164 261 294 0.002 0.003 0.007 0.010 0.015 0.015 0.023 1.43 '2.46 6.00 8.70 12.60 10.32 14.70 Varnished Glass Cloth Spec: 17-1--45 Insulation Class B Group GFV, Grade 0, Form C. A high-grade, var nished glass cloth using continuous-filament glass cloth and an organic insulating varnish. A generalpurpose insulating material available in 25-linearyard rolls, 36 inches wide trimmed. G17-I-1500-20 G17-I-1500-80 G17-I-1500-140 0.025 0.035 0.045 15 18 Unit of issue: Square yard 20 222 I Approximate cost: $2.00 per square yard APPENDIX I. DESCRIPTION AND STOCK LIST Stock No. Dielectric Thickness, in. strength, volts Grade O, Form C: G17-I-2641-905 G17-1-2641-915 G17-I-2641-925 G17-I-2641-935 0.005 0.007 0.010 0.012 6,250 8,750 11,000 12,000 Silicone Glass Cloth Spec: 17-1-45 Insulation Class H Group GFV, Grade S, Form C. A high-grade, sili cone-varnished glass cloth using continuous-filament glass cloth and a silicone varnish. A general-purpose, high-temperature insulating material available in 25-linear-yard rolls, 36 inches &ide trimmed. Unit of issue: Square yard Approximate cost: $4.00 per square yard Stock No. Thickness, in. Dielectric strength, volts Grade S, Form C: G17-1-2642-40 ' G17-I-2642-70 G17-1-2642-100 G17-I-2642-120 0.004 0.007 0 010 0.012 4,400 7,000 8,000 8,500 Insulation, Electrical, Tape An electrical insulation item consisting of tape of any kind but usually consisting of woven fabric (less than 8 inches wide), slit film, or sheet material. Tape may be plain, impregnated, or varnished. TAPE Cotton Tape, Llnen Finish Spec: JAN-T-638 Insulation Class O Type I (.Plain). A high-grade, uniformly woven cotton tape with a linen finish free from unsighdy defects, lumps, knots, etc. Available in 72-yard rolls. Unit of issue: Roll Approximate cost: $0.40 per roll Varnished Cambric Tape Spec: 17-C-8 Insulation Class A Type B (Bias Cut). A closely and uniformly woven cotton fabric treated with a high-grade, slow-baking organic varnish for general insulating purposes. Furnished in 36- and 72-yard rolls. Unit of issue: Roll Approximate cost: $0.80 per roll Stocjk Nc. Thickness, in. Width, in. Stock No. Thickness, in. Width, in. G17-T-1300 G17-T-1310 G17-T-1305 G17-T-1315 G17-T-I320 G17-T-1330 0.005 0.005 ' 0.007 0.007 0.007 0.007 Vi 36-Yard rolls: K G17-T-1118 Vi G17-T-1120 X G17-T-1124 1 G17-T-1122 l Vi G17-T-1126 G17-T-1128 G17-T-1130 72-Yard rolls: G17-T-1170 G17-T-1175 G17-T-1185 G17-T-1180 G17-T-1190 G17-T-1195 G17-T-1200 223 0.007 0.007 0.0C7 0.010 0.010 0.010 0.012 0.007 0.007 0.007 0.010 0.010 0.010 0.012 X 1 1)4 l IK m IK X 1 IK l IK IK IK SHIPBOARD ELECTRICAL INSULATION Friction Tape Spec: HH-T-101 * Insulation Class A A general-purpose tape made from cotton sheeting, evenly and firmly woven from good cotton, free from defects, lumps, or twist. The fabric is thoroughly impregnated and evenly coated on both sides with a friction rubber compound. Available in rolls of 85 feet. Nominal thickness 0.015 inch. Dielectric strength 1,000 volts. Unit of issue: Roll Approximate cost: $0.40 per roll Stock No. Width, in. G17-T-805 GI7-T-810 G17-T-815 % 1 lH Rubber Tape Spec: HH-T-111 Insulation Class A A general-purpose rubber adhesive tape of uniform width; evenly, smoothly, and well calendered; free from surface holes. Nominal thickness 0.027 inch. Dielectric strength 350 volts per mil. Unit of issue: Roll Approximate cost: $0.40 per roll Stock No. Width, in. Ft per roll G.;7-T-1445 Gr-T-1460 K 2 30 15 Gt_^ss Tape (Untreated) Spec: MIL--I--1140A Insulation Class C Gr'mp GFU. A high-grade uniformly woven glassfiber cape having high insulation resistance, high di electric strength, and low moisture pickup. Tape furnished in 36-yard rolls except 0.003-inch tape, which is furnished in 72-yard rolls. L nit of issue: Roll Approximate cost: $0.80 per roll Stock No. Thickness, in. Width, in. Yd per lb Class GFC, ECC--11B, Continuous Filament, Close "Weave G17-1-2645-2 G17-1-2645-4 G17-I-2645-6 G17-I-2645-8 G17-1-2645-12 G17-I-2645-14 G17-I-2645-16 G17-I-2645-18 G17-I-2645-20 G17-I-2645-24 G17-1-2645-26 G17-1-2645-28 G17-1-2645-30 G17-1-2645-32 G17-I-2645-36 0..003 0.003 0.003 0.003 0.003 0.005 0.005 0.005 0.005 0.005 0.007 0.007 0.007 0.007 0.007 Vb 558 . !Hz 403 3A 271 1 198 m 117 Vb - 268 V. 208 3A 143 1 109 U4 74 Vb 222 Vi 172 3A 118 1 90 1H 61 Class CFM, ECC-11A, Continuous Filament, Medium Weave G17-I-2645-64 G17-I-2645-66 G17-I-2645-68 G17-I-2645-72 G17-1-2645-76 G17-1-2645-78 G17-I-2645-80 G17-I-2645-84 G17-I-2645-88 G17-1-2645-90 G17-1-2645-92 G17-I-2645-96 G17-I-2645-100 G17-I-2645-102 G17-I-2645-104 G17-I-2645-108 0.005 0.005 0.005 0.005 0.007 0.007 0.007 0.007 0.010 0.010 0.010 0.010 0.015 0.015 0.015 0.015 Vi 248 H 178 1 135 1H 91 A 172 3A 123 1 93 l M 64 H 128 H 86 l 65 1H 43 A 91 H 63 l 48 IA 32 224 t APPENDIX I. DESCRIPTION AND STOCK LIST Stock No. Thickness, Width, in. Yd per lb in. CLASS SFM, ESS-13A, Staple Fiber, hledium Weave G17-1-2645-120 G17-I-2645-122 G17-1-2645-124 G17-I-2645-128 G17-I-2645-130 G17-I-2645-132 G17-I-2645-134 G1-7-1-2645-138 G17-I-2645-140 G17-I-2645-142 G17-I-2645-144 G17-I-2645-148 G17-I--2645-150 G17-I-2645-152 Gl7-1-2645-154 Gl7-1-2645-158 0.010 0.010 0.010 0.010 0.015 0.015 0.015 0.015 0.020 0.020 0.020 0.020 0.025 0.025 0.025 0.025 M 127 X 83 1 65 1A 42 34 90 % 60 1 45 iA 29 A 68 X 49 l 36 l 34 25 Yz 63 X 44 1 32 1J4 18 Glass Tape (Varnished) Spec: 17-1-45 Insulation Class B Group GFV, Grade 0, Form T. A high-grade, var nished glass tape using continuous-filament glass and treated with organic varnish. A general-purpose tape available in 36-linear-yard rolls. Unit of issue: Roll Approximate cost: S1.00 per roll Silicone Glass Tape Spec: 17-1-45 Insulation Class H Group GFV, Grade S, Form T. A high-grade glass tape treated with silicone varnish for high-temperature and extreme-moisture applications. Available in 36-linear-yard rolls. Unit of issue: Roil Approximate cost: $2.00 per roll Stock No. Grade S, Form T: G17-I-2642-5450 Gl7-1-2642-5475 G17-1-2642-5500 G17-I-2642-5550 G17-I-2642-5750 G17-I-2642-5775 G17-I-2642-5800 Gl 7-1-2642-5850 G17-I-2642-6050 G17-I-2642-6075 G17-I-2642-6100 G17-I-2642-6150 G17-I-2642-6350 G17-I-2642-6375 G17-I-2742-6400 Gl7-1-2642-6450 Thickness, in. Width, in. 0.004 0.004 0.004 0.004 0.007 0.007 0.007 0.007 0.010 0.010 o.oio 0.010 0.012 0.012 0.012 0.012 A X 1 134 34 X 1 \A A X 1 134 34 ' X l 134 . -Stock No. Grade O, Form T, Yeliow: G17-r-2641-2500 Gl7-1-2641-2510 G17-I-2641-2520 G17-I-2641-2530 G17-I-2641-2G00 G17-I-2641-2610 Gl 7-1-2641-2620 G17-1-2641-2630 Gl7-1-2641-2700 G17-I-2641-2710 G17-I-2641-2720 Gl 7-1-2641-2730 G17-I-2641-2H00 G17-I-2641-2H10 Gl7-1-2641-2820 G17-1-2641-2830 Thickness, Width, in. in. 0.005 0.005 0.005 0.005 0.007 0.001 0.007 0.007 0.010 0.010 0.010 0.010 0.012 0.012 0.012 0.012 Yz X 1 134 Yz X 1 1H H X 1 134 Yz X 1 1 '-'2 Mica-Glass Combinations Spec: 17-1-62 Close B, Form T, with organic varnish Class H, Form T, with silicone varnish Type GMG (Glass-Mica-Glass). Consists of pasted mica sandwiched between single layers of glass cloth. Type MG (Mica-Glass). Consists of pasted mica laminated with one layer of glass cloth. Type PMG (Paper-Mica-Glass). Consists of pasted mica laminated with one layer of thin paper on one side (for mechanical support) and one layer of glass cloth on the other side. This material is used for generator, motor, and transformer coils; slot liners; ground insulation; phase-to-phase insulation; primary-secondary separa tion; coil exteriors; cable splices; coil and cell wrap pers; and similar uses. It has high dielectric strength. Unit of issue: Roll 225 Approximate cost: $8.00 per square yard SHIPBOARD ELECTRICAL INSULATION Stock No. Class B, Type PMG: G17-I-4235-800 G17-1-4235-820 G17-I-4235-840 Class H, Type GMG: G17-1-4235-500 G17-1-4235-520 G17-T4235-540 ' Class H, Type MG: G17-1-4235-100 G17-1-4235-120 G17-I-4235-140 G17-1-4235-200 G17-I-4235-220 G17-1-4235-240 Thickness, in. Width, in. 0.007 0.007 0.007 K X 1 0.010 0.010 0.010 K K 1 0.0035 0.0035 0.0035 0.007 0.007 0.007 A X l K X l for general-purpose insulation use. Furnished in 36-yard rolls. Unit of issue: Roll Approximate cost: $1.00 per roll Stock No. Thickness, in. Width, in. Type HMHR (High Mechanical and Heat Resistance) G17-T-1736-100 G17-T-1736-105 G17-T-1736-110 G17-T-1736-130 G17-T-1736-135 G17-T-1736-140 0.003 0.003 0.003 0.005 0.005 0.005 K K X K K X Type MMHR (Medium Mechanical and Heat Resistance) Asbestos Tape (Untreated) Spec: MIL-I-3053 Insulation Class C Class 4, Type 4PU. A medium-quality asbestos tape where electrical properties are of secondary im portance. Furnished in 36-yard rolls. Minimum dielectric strength 25 volts per mil. G17-T-1737-100 G17-T-1737-105 G17-T-1737-110 G17-T-1737-130 G17-T-1737-135 G17-T-1737-140 0.003 0.003 0.003 0.005' 0.005 0.005 X K X X K X Unit of issue: Roll Approximate cost: $1.00 per roll Synthetic Fiber, Woven (Treated) Spec: 17-1-34 Insulation Class A . ,* Stock No. Thickness, in. Width, in. Group SFT, Form T. A woven, synthetic fiber tape treated with an organic varnish and used for general G17-I-1545-10 G17-I-1545-40 G17-1-1545-70 G17-I-1545-100 0.015 0.015 0.015 0.015 insulation applications. Furnished in nonbonding (class 2) only and in 36-yard rolls. X 1 Unit of issue: Roll Approximate cost: $1.00 IK per roll G17-I-1545-130 0.015 . IK G17-I-1545-160 G17-I-1545-190 0.020 0.025 1 K Stock No. Thickness, in. Width, in. G17-1-1545-220 Gl 7-1-1545-250 Gl 7-1-1545-280 G17--I--1545--310 Gl"-I-1545-340 0.025 0.025 0.025 0.025 0.030 K 1 IK IK IK G17-I-5776-300 G17-1-5776-305 G17-1-5776-310 Gl 7-1-5776-350 Gl 7-1-5776-355 0.003 0.003 0.003 0.004 C.004 X K X X Vz G17-I-5776-360 0.004 X Synthetic Fiber, Woven (Untreated) Spec: '.'-1-34 Insulation Class O Cross SFU, Form T. A woven synthetic fiber tape G17-I-5776-400 G17-I-5776-405 G17-I-5776-410 0.005 0.005 0.005 X K X 226 t e SI.00 c :at lass A r tape :neral tiding SI.00 in. APPENDIX I. DESCRIPTION AND STOCK LIST Synthetic Resin Spec: JAN-I-631 Insulation Class A Type F, Grade A, Form T. A high-elongation elastic material with good electrical properties suitable as an alternate for rubber tape. Furnished in black only in rolls 4 K inches in diameter for hand taping. Unit of issue: Roll Approximate cost: SI.50 per roll Stock No. Thickness, in. Width, in. Type F, Grade A: G17-1-5797-50 G17-1-5797-55 G17-I-5797-60 G17-I-5797-61 G17-I-5797-62 G17-I-5797-65 G17-1-5797-70 G17-I-5797-75 0.010 0.010 0.010 0.010 0.010 0.020 0.020 0.020 K K l IK IK K K l Synthetic Resin (Adhesive) Spec: 17-T-28 Insulation Class A Type VF. A pressure-sensitive adhesive, vinyl chloride-acetate backing, black tape 0.010 inch thick. Furnished in 36-yard rolls. Unit of issue: Roll Approximate cost: $0.40 per roll Stock No. Thickness, in. Width, in. G17-T-1745-35 G17-T-1745-60 G17-T-1745-200 G17-T-1745-250 G17-T-1745-300 0.010 0.010 0.010 0.010 0.010 K K 1 IK IK Insulation, Electrical, Rod An electrical insulation item consisting of a solid bar, usually circular and long in proportion to its breadth and thickness. FIBRE Fibre Rods Spec: JAN-F-1148 Insulation Class O Grade.BH. Extra-hard dense stock commonly re ferred (d as "bone hard." Unit of'issue: Foot Approximate cost: $0.15 per foot Grade CH. A hard fibre stock commonly referred to as "commercial" or "vulcanized." Unit of issue: Foot Approximate cost: $0.50 per foot Stock No. Diameter, in. Grade BH: G17-I-1799-950 G17-1-1799-975 G17-I-1800 G17-I-1810 G17-1-1820 G17-1-1830 G17-I-1840 Grade CH: G17-I-1950 G17-I-1960 G17-I-1970 G17-I-1980 G17-I-1990 G17-1-2000 G17-I-2010 G17-1-2020 G17-I-2030 X Vie K Kb X X X K X 1 1X IK IK m 2 227 i 3 1 ) i i i Ja SHIPBOARD ELECTRICAL INSULATION PLASTICS Paper Base, Form R Spec: MIL-P-79 Insulation Class A Type PBG. A general-purpose material having fair electrical and mechanical properties. Has poor fire and arc resistance. Supplied in natural color in length of approximately 36 inches. Unit of issue: Foot Approximate cost: 80.70 per foot Stock No. Diameter, in. G17-1-5478-500 G17-1-5478-510 G17-I-5478-520 G17-1-5478-530 G17-I-5478-570 G17-I-5478-635 % X Vi 1 IX 2 Stock No. Diameter, in. Type PBG: G17-I-5683-610 G17-I-5683-630 G17-1-5683-640 G17-I-5683-655 G17-I-5683-670 G17-I-5683-685 G17-1-5683-700 G17-I-5683-715 X Hi Vi X' Vi X n 1 Fabric Base, Form R Scec: MIL-P-79 Insulation Class A Type FBE. A linen-fabric-base, laminated rod haring fairly good electrical properties suitable for fine machining operations. Supplied in natural color in lengths of approximately 36 inches. Unit of- issue: Foot Approximate cost: 80.90 per foot Glass Base, Form R Spec: MIL-P-79 Insulation Class B Type GMG. A fire- and arc-resistant laminated rod with good electrical properties and excellent mechani cal strength. 'Supplied in natural color only. Unit of issue: Foot Approximate cost: 82.00 per foot Stock No. Diameter, in. G17-I-5762-975 G17-1-5763-45 G17-I-5763-50 G17-1-5763-65 G17-I-5763-80 G17-I-5763-95 G17-I-5763-110 'G17-I-5763-125 G17-I-5763-140 G17-I-5763-145 G17-I-5763-150 G17-I-5763-155 G17-1-5763-170 G17-I-5763-190 G17-I-5763-250 Hi X ^16 X X Vi X Vi 1 IX IX ix 2 2X 3 Insulation, Electrical, Cordage Anelectrical insulation item consisting of (1) a twisted yarn of organic or inorganic fibers or (2) an extruded synthetic plastic flexible rod, usually less than X inch diameter. GLASS FIBER T'-'-ated Cord Spec: MIL-I-1140A Insulation Class C Setup GFU, Class CF. An untreated, continuousaliment, twisted glass-fiber cord with high tensile strength suitable for wire-tying purposes. L"a;t of issue: Pound Approximate cost: S0.8S per pound Stock No. Cord No. Diameter, Yd per lb in. G17-1-2644-500 G17-1-2644-505 G17-1-2644-510 G17-1-2644-515 G17-I-2644-520 G17-I-2644-525 G17-I-2644-535 EC5-1-U EC5-2-U EC5-3-U EC5-4-U EC5-5-U EC5-6-U EC5-8-U X4 X2 Vi4 Mg Hie. Vzz Vi 3,533 750 410 192 156 130 92 228 APPENDIX I. DESCRIPTION AND STOCK LIST Insulation, Electrical, Sleeving A flexible electrical insulation item consisting of a hollow cylindrical plastic extrusion or a round woven fabric. SLEEVING Cotton, Braided (Untreated) Spec: MIL-I-3042 Insulation Class O Type CFU. A braided cotton sleeving which readily absorbs insulating varnish. Flexible and suitable for insulating bare wire, leads, and rods. Unit of issue: Pound Approximate cost: $1.80 per pound Black J Stock No. Blue Gray Red ID, in. Wall thickness, in. Approx, yd per lb Covers AWG (bare) wire G17-S-8300 G17-S-8310 G17-S-8315 G17-S-8325 G17-S-8330 G17-S-8335 G17-S-8345 G17-S-8350 G17-S-8355 G17-S-8360 G17-S-83&5 G17-S-8465 G17-S-8475 G17-S-8480 G17-S-8490 G17-S-8495 G17-S-8500 G17-S-8510 G17-S-8515 G17-S-8520 G17-S-8525 G17-S-8530 G17-S-8630 G17-S-8640 G17-S-8645 G17-S-865S G17-S-8660 G17-S-8665 G17-S-8675 G17-S-8680 G17-S-8685 G17-S-8690 G17-S-8695 G17-S-8800 G17-S-8810 G17-S-8815 G17-S-8825 G17-S-8830 G17-S-8835 G17-S-8845 G17-S-8850 G17-S-8855 G17-S-8860 G17-S-8865 0.031 0.064 0.081 0.128 0.162 0.204 0.258 0.289 0.325 0.375 0.438 0.014 0.016 0.017 0.018 0.017 0.018 0.018 0.018 0.018 0.018 0.018 720 18-20 280 13-18 250 11-12 225 9-10 125 6-7 100 4-5 80 2-3 75 1-2 65 0-1 60 00-0 50 000-00 Asbestos, Braided (Untreated) Spec: MIL-I-3053 Insulation Class C Class 4, Type 4PU {Plain, Untreated). A braided asbestos fiber sleeving which readily absorbs insulating varnish. Flexible and suitable for insulating bare wire, leads! and rods. Unit of issue: Pound Approximate cost: $3.00 per pound Stock No. Approx, Covers AWG ID, in. yd per lb (bare) wire Class 4, Type 4PU: G17-I-1530-80 G17-I-1530-140 G17-I-1530-200 G17-I-1530-260 G17-I-1530-320 G17-1-1530-380 G17-I-1530-440 G17-I-1530-500 G17-I-1530-56G %2 X He %2 X Hs As 61 45 30 26 23 22.6 20 17 13 9-10 4-5 2-3 1-2 0-1 00-0 000-00 SHIPBOARD ELECTRICAL INSULATION Glass, Braided (Untreated) Spec: MIL-I-1140A Insulation Class C Group GFU, Class CF. A heavy braided, glassfiber sleeving which readily absorbs insulating var nish. Flexible with high mechanical strength. Suitable for insulating bare wire, leads, and rods. Uiilt of issue: Yard Approximate cost: $0.10 per yard Stock No. ID, in. Wall thickness, in. Approx, yd per lb Covers AWG (bare) wire Group GFU, Class CF: G17-I-2644-700 G17-1-2644-705 G17-1-2644-710 G17-I-2644-715 G17-I-2644-720 G17-I-2644--725 G17-1-2644-730 #6 y Ho X Ho Vo Vi 0.0070 0.0090 0.0090 0.0085 0.0085 0.0085 0.0075 221 13-18 100 9-10 83 65 2-3 52 0-1 44 00-0 32 000-00 Braided Fabric Sleeving (Varnished) Spec: MIL-I-3190 insulation Class A Class A-A-1. A braided cotton, rayon, or nylon fabric treated with a continuous film of oleoresinous varnish. It has high dielectric strength and good flexibility. Furnished in 3-foot lengths. Unit of issue: Foot Approximate cost: $0.35 per foot Stock No. Class A-A-l: G17-I-1715-600 G17-1-1715-605 G17-I-1715-610 G17--I--1715--615 G17-I-1715-620 G17-1-1715-625 G17-I-1715-630 G17-I-1715-635 G17-1-1715-640 G17-I-1715-645 G17-I-1715-650 G17-1-1715-655 G17-I-1715-660 G17-1-1715-665 G17-I-1715-670 G17-I-1715-675 G17-I-1715-680 G17-I-1715-685 G17-I-1715-690 G17-I-1715-695 G17-1-1715-700 G17-I-1715-705 G17--I--1715--710 G17-1-1715-715 G17-I-1715-720 G17-I-1715-725 G17-1-1715-730 G17-I-1715-735 ID, in., min For wire size, AWG 0.020 0.032 0.040 0.045 0.051 0.057 0.064 0.072 0.081 0.091 0.102 0.114 0.129 0.144 0.162 0.182 0.204 0.229 0.258 0.289 0.325 0.375 0.438 0.500 0.625 0.750 0.875 1.000 24 20 - 18 ' 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 H in. Ho in. A in. Vi in. in. Vo in. 1 in. * ength. n, ,,ds. cost: 50.10 re AWG e) wire 3-18 9-10 2-3 0-1 0-0 >-00 wire size, \WG 24 20 18 14 13 12 11 10 9 8 7 6 5 4 3 n l in. ` in. in. in. in. in. in. APPENDIX I. DESCRIPTION AND STOCK LIST Braided Glass Sleeving (Varnished) Spec: MIL-I-3190 Insulation Class B Class B-A-1. A braided glass fabric treated with a continuous film of oleoresinous varnish. It has high dielectric strength and good flexibility. Furnished in 3-foot lengths. Unit of issue: Foot Approximate cost: $0.60 per foot Stock No. For wire size, ID, in., min AWG Class B-A-l: G17-I-2641-300 G! 7-1-2641-305 G17-I-2641-310 GIT--I--2641--315 G17-I-2641-320 G17-I-2641-325 G17-I-2641-330 G17-I-2641-335 G17-1-2641-340 G17-I-2641-345 G17-I-2641-350 G17-I-2641-355 G17-1-2641-360 G17-1-2641-365 G17-1-2641-370 G17-I-2641-375 G17-1-2641-380 G17-1-2641-385 G17-I-264j-390 G17-I-2641-395 G17-I-2641--400 G17-I-2641-405 G17-I-2641--410 G17-I-2641-415 G17-I-2641-420 G17-I-26.41-425 G17-1-2641-430 G17-I-2641--435 0.020 0.032 0.040 0.045 0.051 0.057 0.064 0.072 0.081 0.091 0.102 0.114 0.129 0.144 0.162 0.182 0.204 0.229 0.258 0.289 0.325 0.375 0.438 0.500 0.625 0.750 0.875 1.000 24 20 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 H in. He in. H in. Ve in. M in. Ye in. 1 in. Braided Glass Sleeving (Silicone) Spec: MIL-I-3190 Insulation Class H Class H-A-1. A braided glass fabric treated with a continuous film of silicone varnish. It has high di electric strength and good flexibility. Furnished in 3-foct lengths. Stock No. Class H-A-l: G17-1-2642-3200 G17-1-2642-3205 G17-I-2642-3210 G17-I-2642-3215 G17-I-2642-3220 G17-I-2642-3225 G17-I-2642-3230 G17-1-2642-3235 G17-1-2642-3240 G17-1-2642-3245 G17-1-2642-3250 G17-I-2642-3255 G17-1-2642-3260 G17-1-2642-3265 G17-I-2642-3270 G17-I-2642-3275 G17-I-2642-3280 G17-I-2642-3285 G17-I-2642-3290 G17-I-2642-3295 G17-I-2642-3300 G17-1-2642-3305 G17-I-2642-3310 G17-I-2642-3315 G17-I-2642-3320 G17-I-2642-3325 G17-I-2642-3330 G17-1-2642-3335 ID, in., min For wire size, AWG 0.020 0.032. 0.040 0.045 0.051 0.057 0.064 0.072 0.081 0.091 0.102 0.114 0.129 0.144 0.162 0.182 0.204 0.229 0.258 0.289 0.325 0.375 0.438 0.500 0.625 0.750 0.875 1.000 24 20 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Vs in. He inY in. % inH in. Vs in. 1 in. Synthetic Resin Sleeving Spec: JAN-I-631 Form U, Flexible Insulation Class A Type A. A high-dielectric-strength, low-loss-factor, extruded sleeving. Intended primarily for high- frequency circuits. Polystyrene and polyethylene are typical materials of this type. Type F, Grade A. A moderate-mechanical-strength, extruded sleeving with good electrical properties suitable as an alternate for rubber insulating tape in cable and other applications where sleeving may be used. Polyvinyl chloride and vinyl acetate are typical materials of this type. , Unit of issue: Foot Approximate cost: 50.75 Unit of issue: Foot per foot 231 Approximate cost: 50.07 per foot SHIPBOARD ELECTRICAL INSULATION Stock No. Stock No. ID, in. OD, in. Type PBG, Tr: G17-I-5708 G17-I-5709 G17-1-5710 G17-1-5711 G17-I-5712 G17-I-5713 G17-1-5714 G17-1-5715 G17-I-1716 G17-1-5717 G17-1-571# G17-1-5719 G17-1-5720 G17-1-5721 G17-I-5722 G17-1-5723 G17-1-5724 Gl 7-1-5725 G17-1-5726 Gl 7-1-5727 G17-I-5728 Gl 7-1-5729 G17-1-5730 . Type PBE, Tr: G17-I-5644 G17-I-5645 G17-I-5646 G17-1-5647 G17-I-5648 Gl 7-1-5649 Gl 7-1-5650 Gl7-1-5651 G17-I-5652 G17-I-5653 G17-I-5654 G17-I-5655 G17-1-5656 Gl 7-1-5657 G17-I-5658 Gl 7-1-5659 Gl 7-1-5660 G17-I-5661 G17-I-5662 G17-1-5663 G17-I-5664 G17-I-5665 Gl 7-1-5666 X X X X* X Ks H X Xs X X X X 1 IHe IXi ix tX 1X IX tx IX X X X X X Xs X % % X X 1 tx IX 1 Jl6 IX IX IX tx IX tx tx 2 Stock No. Stock No. ID, in. OD, in. Type GMG, Tm: Type GMG, Tr: G17-I-5765-300 G17-I-5765-600 G17-I-5765-310 G17-I-5765-610 G17-I-5765-320 G17-I-5765-620 G17-I-5765-330 Gl7-1-5765-630 G17-I-5765-340 G17-I-5765-640 G17-I-5765-350 G17-I-5765-650 Gl7-1-5765-360 G17-I-5765-660 G17-I-5765-370 G17-I-5765-670 G17-I-5765-380 G17-I-5765-680 G17-I-5765-400 G17-I-5765-690 G17-I-5765-425 G17-I-5765-720 G17-I-5765-445 G17-I-5765-730 G17-I-5765-450 G17-I-5765-740 G17-I-5765-7S0 G17-I-5765-460 G17-I-5765-760 G17-I-5765-475 G17-I-5765-770 G17-I-5765-490 G17-I-5765-780 G17-I-5765-790 Gl7-1-5765-800 G17-I-5765-810 G17-1-5765-820 G17-I-5765-830 Gl7-1-5765-840 X X- X X X X X Vs X 1 tXs tx tx tx* tx tx tx 1% 2 2X 2H IX 2JT X X X X X X X 1 tx tx lx IX tx tx tx tx 2 2 2X 2J4 2X 3 3H Insulation, Electrical, Mica Afi electrical insulation consisting of natural mica in the form of blocks or splittings. V hen pasted or built up with binders or reinforcement, the composite mica structure should be classified as Insulation, sheet, tape, or tubing. NATURAL MICA Mica (.Muscovite) Spec: HH-I-538 Insulation Class C Class AM, Form S. Trimmed, uncut, natural mica in sheet form. Because of high cost and limited availability, only two types are shown here: type NMHs (heavily stained) and NMSt (stained). Where a higher quality type is required, justification for its use shall be furnished the Bureau concerned along with the request or requisition. Minimum dielectric strength, 1,000 volts per mil. Sheet3 are not less than 0.004 inch or more than 0,050 inch in thickness. Approximate weight, 0.101 pound per cubic inch. Unit of issue: Pound Approximate cost: S3.00 per pound DD, in. X Yl SA lA Vi X Vs ! Vi \'A *Vi X iA ix 'H "A X X It up c, or rned r.um are ti in per 3.00 APPENDIX I. DESCRIPTION AND STOCK LIST Stock No. Size rectangle Grade Min area, Min size, sq in. in. Stock No. Size rectangle Grade Min area, Min size; sq in. in. Type NMHs (Heavily Stained): Type NMSt (Stained): G17-I-3843 G17-I-3843-10 G17-I-3843-20 G17-I-3843-30 G17-I-3843-40 G17-I-3843-50 G17-I-3843-60 G1T-I-3843-70 A-l 36 1 24 2 15 3 10 46 53 5H 2 Vi 61 4.0 3.0 2.0 2.0 1.5 1.0 1.0 0.75 G17-I-3847 G17-I-3847-10 G17-I-3847-20 G17-1-3847-30 G17-I-3847-40 G17-I-3847-50 G17-1-3847-60 G17-I-3847-70 A-l 36 4.0 1 24 3.0 2 15 2.0 3 10 2.0 4 6' 1.5 5 3 1.0 5H Z'A 1.0 6 1 0.75 Insulation, Electrical, Film-thin An electrical insulation item consisting of a nonreinforced synthetic plastic extrusion or shaved thin film usually less than Vis inch thick and wider than 8 inches. SYNTHETIC RESIN Cellulose Acetate Spec: JAN-I-631 Insulation Class A Type C, Form S. A transparent, cellulose acetate, thin-film plastic intended for use as electrical insula tion. Possesses good electrical properties, a fair degree of moisture resistance, fairly low loss factor, and a higher degree of fire resistance than most plastic film materials. Minimum dielectric strength, 7,SOO volts. Furnished in rolls 30 inches wide, 20 yards long. Unit of issue: Yard Approximate cost: 80.3d per yard Stock No. Thickness, in. Type C, Form S: G17-I-5778-500 0.005 Insulation, Electrical, Liquid, Dielectric An electrical insulation item consisting of a natural or synthetic resinous substance in liquid form having dieiectric'properties. VARNISH Insulating Varnish for application to the electrical windings and other Spec: JAN-V-1137 Insulation Class A parts of motors, generators, and transformers and to Type jV. Material for application by Naval personnel. C'ide BA, black, air drying, insulating. C-sde BB, black, baking, insulating. C'ide CA, clear, air drying, insulating. Crsde CB, clear, baking, insulating. C-sde CF, clear, finishing. The above grades of insulating varnish are suitable electrical apparatus in general. Grade CB, clear baking varnish, in most instances, gives maximum protection to the windings from moisture, oil, sea water, and other deleterious substances. These grades are usually designated as class A insulation when applied over windings using resincovered wire, cotton, or paper or similar insulation material. When the above grades of varnish are applied over windings using glass-served wire, with 235 { SHIPBOARD ELECTRICAL INSULATION glass, mica, asbestos, and other similar insulating materials, the resulting structure is designated as class B insulation. Unit of issue: Gallon Approximate cost: 52.00 per gallon Stock No. Container Grade BA: G52-V-1100 G52-V-1105 Grade BB: G52-V-1145 G52-V-1150 Grade CA: G52-V-1240 G52-V-1255 G52-V-1260 Grade CB: G52-V-1300 G52-V-1305 Grade CF: G52-V-1345 G52-V-1350 1-gal can 5-gal can 1 -gal can 5-gal can 1-pt can 1-gal can 5-gal can 1-gal can 5-gal can 1-gal can 5-gad can Insulating Varnish (Silicone) Socc: (Refer to BuShips) Insulation Class H Type N. Material for application by Naval ocnonnel. Grade HTB, a high-temperature baking type of silicone varnish suitable for application to electrical windings. Bakes at temperature of 250 C (482 F). Two grades, Dow Corning Corporation DC993 and General Electric Company 9989-1, are available. These varnishes should not be mixed together, as precipitation may occur. Grade LTB, a low-temperature baking type of silicone varnish suitable for application to electrical windings. Bakes at temperature of 150 C (302 F). One grade, Dow Coming Corporation DC996, is available. Unit of issue: Gallon Approximate cost: $12.00 per gallon Stock No. Grade HTB-993: G52-V-1361-10 G52-V-1361-20 G52-V-1361-100 Grade HTB-9989-1: G52-V-1361-510 G52-V-1361-S20 G52-V-1361-600 Grade LTB-996: G52-V-1360-10 G52-V-1360-20 G52-V-1360-100 Container 1-gal can 5-gal can S5-gal drum 1-gal can 5-gal can 55-gal drum 1-gal can 5-gal can 55-gal drum Wire, Magnet, Insulated A solid copper conductor, usually round, of small diameter, and insulated with a synthetic resin or a fibrous filer material combined with a resin. Magnet Wire, Round, Resin-covered spec: JAN-W-583 Insulation Class A -Type R, Single. A solid conductor insulated with one coat of insulating resin. Type R2, Double. A solid copper conductor insu lated with two coats of insulating resin. Type R4, Quadruple. A solid copper conductor in sulated with four coats of insulating resin. Unit of issue: Pound Approximate cost: $0.40 to 51-70 per pound -X 236 -if r> 5 ,^e of electrical 1 (482 F). C993 and available, 'ether, as type of electrical (302 F). >C996, is t: S12.00 fibrous tor in 50.40 .id APPENDIX I. DESCRIPTION AND STOCK LIST Stock No. Type R, Single: G15-W-62018 G15-W-62019 G15-W-62020 G15-W-62021 G15-W-62022 G15-W-62023 G15-W-62024 G15-W-62025 G15-W-62026 G15-W-62027 G15-W-62028 G15-W-62029 G15-W-62030 G15-W-62031 G15-W-62050 G15-W-62055 G15-W-62060 G15-W-62065 G15-W-62070 G15-W-62075 G15-W-62080 G1.5-W-62085 G15-W-62090 G15-W-62095 G15-W-62100 G15-W-62110 Q15-W-62115 G15-W-62120 G15-W-62125 G15-W-62130 G15-W-62135 G15-W-62140 G15-W-62145 - Wire size, AWG Ft per lb 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 . 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 32,600 25,800 20,500 16,296 12,850 10,200 8,160 6,430 5,120 4,050 3,220 2,550 . 2,030 1,610 1,280 1,010 805 639 507 402 319 256 201 159 127 99.9 78.6 63.0 50.0 39.8 31.5 25.2 20.0 . Stock No. Wire size, AWG Ft per lb Type R2, Double: G15-W-59250 G15-W-59275 G15-W-59280 G15-W-59285 G15-W-59290 G15-W-59295 G15-W-59300 G15-W-59305 G15-W-59310 G15-W-59315 G15-W-59320 G15-W-59325 G15-W-59330 G15-W-59335 G15-W-59500 G15-W-59505 G15-W-59510 G15-W-59520 G15-W-59525 G15-W-59530 G15-W-59535 G15-W-59540 G15-W-59545 G15-W-59550 G15-W-59555 G15-W-59560 G15-W-59565 G15-W-59570 G15-W-59575 G15-W-59580 G15-W-59585 G15-W-59590 G15-W-59595 40 31,700 39 25,200 38 20,100 37 15,900 36 12,650 35 10,050 34 7,940 33 6,330 32 5,050 31 3,990 30 3,160 29 2,520 28 2,000 27 1,580 26 1,260 25 1,000 24 794 23 633 22 503 21 398 20 315 19 253 18 200 17 158 16 126 15 99.5 14 79.4 13 62.9 12 50.0 11 39.7 10 31.4 9 25.2 8 19.8 Type R4, Quadruple: G15-W-62015-100 G15-W-62015-110 G15-W-62015-120 G15-W-62015-130 G15-W-62015-140 G15-W-62015-150 G15-W-62015-160 G15-W-62015-170 G15-W-62015-180 23 22 21 20 19 18 17 16 15 612 491 389 310 247 197 156 124 98.6 237 l t If SHIPBOARD ELECTRICAL INSULATION Magnet Wire, Round, Cotton-covered Spec: JAN-W-583 Insulation Class A Type C, Single. A solid copper conductor insulated with a single serving of cotton yarn. Type C2, Double. A solid copper conductor in sulated with two servings of cotton yam with each ply of yam served in opposite directions. Unit of issue: Pound Approximate cost: $0.27 to $3.40 per pound Stock No. Type C, Single: G15-W-63035 G15-W-63040 G15-W-63045 G15-W-63050 G15-W-63055 G15-W-63060 GI5-W-63065 G15-W-63070 G15-W-63075 G15-W-63080 G15-W-63085 G15-W-63090 G15-W-63095 G15-W-63100 G15-W-63105 G15-W-63110 .G15-W-63U5 1-G15-W-63120 - - G15-W-63125 G15-W-63130 G15-W-63135 G15-W-63140 G15-W-63145 G15-W-63150 - G15-W-63155 G15-W-63160 G15-W-63165 G15-W-63170 G15-W-63175 G15-W-63180 G15-W-63185 G15-W-63190 G15-W-63195 G15-W-63200 G15-W-63205 G1S-W-63210 G15-W-63215 Wire size, AWG Ft per lb 40 20,400 39 17,500 38 14,900 37 12,000 36 10,100 35 8,330 34 6,900 33 5,470 32 4,470 . 31 3,630 30 2,930 29 2,340 28 1,870 27 1,505 26 1,210 25 972 24 775 23 617 22 493 21 392 20 312 19 249 18 197 17 157 16 125 15 99 14 78.8 13 62.5 12 49.8 11 39.6 10 31.5 9 25.0 8 19.8 7 15.7 6 12.5 5 9.90 4 7.88 Stock No. Wire size, AWG Ft per lb Type C2, Double: G15-W-59020 G15-W-59025 G15-W-59030 G15-W-59035 G15-W-59040 G15-W-59045 G15-W-59050 G15-W-59055 G15-W-59060 G15-W-59065 G15-W-59070 G15-W-59075 G15-W-59080 G15-W-59085 G15-W-59090 G15-W-59095 G15-W-59100 G15-W-59105 G15-W-59110 G15-W-59U5 G15-W-59120 G15-W-59125 G15-W-59130 G15-W-59135 G15-W-59140 G15-W-59145 G15-W-59150 G15-W-59155 G15-W-59160 G15-W-59165 G15-W-59170 G15-W-59175 G15-W-59180 G15-W-59185 G15-W-59190 G15-W-59195 G15-W-59200 36 7,750 35 6,620 34 5,610 33 4,570 32 3,800 31 3,130 30 2,570 29 2,080 28 1,703 27 1,385 26 1,122 25 900 24 925 23 585 22' 470 21 376 20 301 19 241 18 192 17 153 16 122 15 97.1 14 77.6 13 61.7 12 49.1 11 39.1 10 31.1 9 24.7 8 19.6 7 15.6 6 12.4 5 9.80 4 7.81 3 6.17 2 4.92 1 3.91 0 3.10 Magnet Wire, Round, Glass-covered Spec: JAN-W-583 Insulation Class B Type GV, Single. A solid copper conductor in sulated with a single serving of glass yam and im pregnated with organic varnish. Type G2V, Double. A solid copper conductor in sulated with two servings of glass yam with each ply of yam served in opposite directions and impregnated with organic varnish. l :iassB or inld im- tor in ch ply mated APPENDIX I. DESCRIPTION AND STOCK LIST Unit of issue: Pound Stock No. Approximate cost: $0.52 to $1.50 per pound Wire size, AWG Ft per lb sulated with a single serving of glass yam and im pregnated with a high-temperature silicone varnish. Type G2H, Double. A solid copper conductor in sulated with a double serving of glass yam and impregnated with a high-temperature silicone com pound. Type GV, Single: Unit of issue: Pound G15-W-63240-38 25 935 G15-W-63240-40 24 752 G15-W-63240-42 G15-W-63240-44 23 588 2i2 474 Stock No. G15-W-63240-46 21 380 G15-W-63240-48 GtS-W-63240-50 G15-W-63240-52 G15-W-63240-54 G15-W-63240-56 G15-W-63240-58 G15-W-63240-60 G15-W-63240-62 G15-W-63240-64 G15-W-63240-66 G15-W-63240-68 G15-W-63240-70 G! 5-W-63240-72 Type G2V, Double: 20 19 18 17 16 15 14 13 12 11 10 9 8 305 245 195 154 123 99.0 78.1 62.1 49.5 39.3 31.2 24.8 19.6 Type GH, Single: G15-W-63235-50 G15-W-63235-70 Gl 5-W-63235-90 G15-W-63235-110 Gl 5-W-63235-120 Gl 5-W-63235-130 G15-W-63235-140 Gl 5-W-63235-150 G15-W-63235-160 G15-W-63235-170 G15-W-63235-180 G15-W-63235-190 Gl 5-W-63235-200 GI5-W-59225 25 870 G15-W-63235-210 G15-W-59226 24 710 Gl 5-W-63235-220 G15-W-59227 23 550 Gl 5-W-63235-230 Gl 5-W-59228 22 446 Gl S-W-632?5-240 G15-W-59229 21 362 Gl 5-W-63235-250 G: 3TW-59230 20 293 G15-W-63235-260 Gi i^W-59231 19 236 Gl 5-W-63235-270 G15-W-59232 Gi5-W-59233 G1S-W-59234 G15-W-59235 G'i5--W-59236 G15-W-59237 Gi;-W-59238 G15-W-59239 G15-W-59240 GI5-W-59241 GiS-W-59242 18 189 17 149 16 120 15 96.2 14 77.0 13 61.0 12 48.6 11 38.8 10 30.8 9 24.5 8 19.4 Type G2H, Double: G15-W-59212-130 G15-W-59212-140 G15-W-59212-150 G15-W-59212-160 G15-W-59212-170 G15-W-59212-180 G15-W-59212-190 G15-W-59212-200 G15-W-59212-210 G15-W-59212-220 G15-W-59212-230 G15-W-59212-240 Magnet Wire, Round, Glass-covered (Silicone) Spec: MIL-W-16072 (Ships) insulation Class H Tree GH, Single. A solid copper conductor in G1S-W-59212-250 G15-W-59212-260 G15-W-59212-270 239 Approximate cost: $0.80 to $3.60 per pound Wire size, AWG Ft per lb 36 34 32 30 29 28 27 26 25 24 23 22 , 21 20 19 18 17 16 IS 14 9,060 6,180 4,160 2,717 2,214 1,772 1,411 1,140 935 752 588 474 380 305 245 195 154 123 99.0 78.1 26 1,060 . 25 870 24 710 23 550 22 446 21 362 20 293 19 236 18 187 17 149 16 120 15 96.2 14 77.0 13 61.0 12 48.6