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 101
tion. The conductor is invariably of copper, the insulator maybe rubber, paper, some insulating compound, or individual insu-lators, depending on the system, while the protection takes one ofseveral forms. Systems. The system, as a whole, may be divided into (a)solid, or built-in, systems; (b)…
Electrical engineering
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