Historically, asbestos was used for electrical wire insulation. It was used nearly everywhere: on ships, in airplanes, homes, and commercial buildings. There were numerous manufacturing companies and brands, including General Electric's Deltabeston brand which was named after the asbestos used in its cables and wires. Asbestos was also used in transformers and other electrical equipment. Electricians as well as anyone doing restoration could be exposed while replacing or upgrading equipment.
Electrical Wires and Cables: Catalogue and Handbook Systems of Wiring (1924)
The sections on magnet wire and Americore heater cord describe the use of asbestos insulation.
Graybar Condensed Catalog (1953)
Features asbestos cord for household appliances and Deltabeston wire for stove, fixture, switchboard, and boiler room.
Graybar Condensed Catalog (1954)
Features wires and cables that contained asbestos, including Deltabeston Boiler Room Wire, Fixture Wire, Apparatus Cable and Heater Cord.
Electrical Engineering Catalogs 1932-1933 (1932)
Asbestos products from General Electric, Johns-Manville, Keasbey & Mattison Company, American Steel & Wire Company, & John A. Roebling's Sons Company.
Inmanco Advertisement (1965)
Asbestos listed as one of the materials for wedges.
Electronic Packaging with Resins (1961)
Westinghouse. Asbestos filler is listed with info about when it should be used. Asbestos suppliers also are listed.
Porter Insulating Tapes Advertisement (1967)
Thermoid Division of H. K. Porter Company. Asbestos cable wrap for underground installations.
H. K. Porter Insulating Tapes Advertisement (1965)
Thermoid Division of H. K. Porter. Advertises asbestos tape, asbestos tubing, and asbestos backed silicone.
Hatfield Silicone Insulated Wire Advertisement (1967)
Continental Copper & Steel Industries Inc. Asbestos covered wire for high temperature applications.
Raybestos-Manhattan Novabestos Cable Advertisement (1967)
Asbestos Textile Division advertisement for Novabestos cable with asbestos filler in it.
Chase-Foster Permatherm P Insulation Advertisement (1967)
Permatherm P was an asbestos film insulation for transformers and motors.
Johns-Manville Transformer Insulation Advertisement (1967)
Johns-Manville asbestos insulation types Quinorgobord & R-4 Quinorgo used in General Electric transformers.
Electrical Insulation Advertisement for J. J. Glenn and Company (1967)
Asbestos Tapes is one of the products listed in this advertisement.
No. 1600 Quinterrabord Johns-Manville Advertisement (1965)
Described as containing asbestos and being cheaper than mica. Used in toasters, electrical heaters, furnaces, hair dryers, and more.
Maintenance Hints: Volumes 1 and 2 (1943)
Westinghouse Electric & Manufacturing Co. Information about asbestos insulation use in general and also its use in an armature.
Electrical Insulation: Its Application to Shipboard Electrical Equipment (1951)
Book printed for U.S. Navy use. Asbestos insulation products, asbestos insulation for wires, motors, and more.
Okonite Insulated Wires and Cables for Marine Needs Brief Catalog (1944)
WWII era catalog describes Okonite cables for marine use on Navy ships and other vessels. Asbestos insulation and protective coverings.
Johns-Manville Documentation: Asbestos Ebony and Ohmstone (1952)
Asbestos Ebony used for switchboards, controller plates, and other electrical apparatus. Ohmstone also used for these items.
Johns-Manville Documentation: J-M Sealing Compounds (1953)
Navaseal, for marine use, contained asbestos. It was used on ships to seal electrical duct services.
Johns-Manville Documentation: Niagrite-Asbestoment Cable Fireproofing (1943)
J-M Niagrite was "commercially pure asbestos felted tape."
Johns-Manville Documentation: Quinterra Electrical Insulation
Quinterra Electrical Insulation contained asbestos fiber. It was used to insulate transformers, wires, coils, etc.
Johns-Manville Documentation on Asbestos Ebony Moulded and Electrobestos (1945)
Electrobestos, an asbestos product, was used for soldering cups, furnace bushings, muffle furnace trays, etc.
Johns-Manville Documentation on Trancell
Trancell, an asbestos product, was used for housing electrical equipment. Transite also described as containing asbestos.
Johns-Manville Documentation on Quinorgo and Quinorgobord
Quinorgo and Quinorgobord were electrical insulation products that contained asbestos.
Johns-Manville Advertisement for J-M Quintex (1969)
Quintex electrical sheet insulation for transformers and coils.
Radix Wire Company Advertisement & Info (1971)
Ad for asbestos covered wire. Asbestos covered high temperature cable.
Document on Purified Asbestos Insulation from Armstrong Cork (1971)
Asbestos insulation for coils, motor clots, switch box liners, coil forms, transformer, cable wrap, panel boards, etc.
Quintex Johns-Manville Advertisement (1970)
Quintex Electrical Insulation contained asbestos.
Document about Fire Resistant Cable for Nuclear Power Plants (1970)
Pyrotex, from Raybestos-Manhattan Inc., contained asbestos. It was used by Cerro Corporation for fire resistant cable.
Document about Asbestos/Phenolic Compound by Rogers Corp (1970)
Asbestos/phenolic compound for commutators, switchgear, and other electrical components.
Spaulding Transformer Insulation Advertisement (1970)
Asbestos laminate transformer insulation.
Johnson Service Company Advertisement
Asbestos switchboard panels.
Roebling Marine Products
Magnet wire with an asbestos tape cover.
Chase Laminated Insulation Materials Advertisement
Asbestos electrical insulation products: Chasbestos and Glasterra
Electrical and Electronic Wire - Belden Manufacturing Co Advertisement
Asbestos lead wire.
Cottrell Paper Company Advertisement (1961)
Copalam asbestos glass laminate insulation. Electrical Insulating Paper.
Page with Info on "Omni-Temp" Silicone Insulated Cable (1968)
Continental Copper and Steel Industries Inc, Hatfield Wire & Cable Division.
Du Pont Teflon Advertisement
Circa 1968. Teflon asbestos composite insulation for wires or cables.
Trumbull Electric Mfg Co Advertisement
Circa 1934. Buss-Wa The Copper Bar Distribution System contained ebony asbestos supports.
General Controls Advertisement 1940s
Circa 1944. Thermopilots A-100 are described as containing asbestos-covered cable.
Everyday Glossary of Wire & Cable Terminology plus Special Terms & Expressions (1969)
Standard Wire & Cable Co. Asbestos use for aircraft wire, fixture wire, switchboard wire, heater cord, and more. Military specs.
American Electricians' Handbook (1987)
Description of asbestos insulation and its use.
Electrician's Mate 3 & 2 Navy Training Manual (1982)
Asbestos is listed as an electrical insulating material. Asbestos used in motors.
American Electricians' Handbook (1981)
This 1980s electrical handbook has information about asbestos covered heat resistant fixture wire and asbestos insulation for cables and cords.
The Encyclopedia of Home Wiring & Electricity (1974)
Asbestos wire use in residential buildings.
American Electricians Handbook (1970)
Asbestos covered fixture wire used.
Inorganic Fibres (1958)
Asbestos Textiles, Asbestos in the Plastics Industry, Asbestos in the Electrical Industry and much more.
Electrical Engineers' Handbook: Electric Power (1947)
Asbestos wire insulation and its uses.
Wiring Materials for All Purposes - General Electric Catalog (1936)
Deltabeston Wire and Cable, General Electric Asbestos Tape and Paper
Electrical Contractors' Catalogue (1924)
General Electric. Deltabeston Cords and Wires, and other GE asbestos Products.