Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 28
these are often insulated. It may serve merely to keep thewires from making contact, as is the case with cotton- or silk-coveredwire. Again, the wire may be covered with a material having a highspecific resistance but being weak mechanically, and this combined 18 POWER TRANSMISSION 9 with a… … Fig. 2. Curves Showing Safe Carrying Capacity of Copper Wires Annunciator wire is covered with heavy cotton yarn saturatedwith paraffin. The so-called underwriters wire is insulated withcotton braid saturated with white paint. Asphaltum or mineralwax is used for insulating weatherproof ivire. It…
Electrical engineering
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