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 209
any reference to the insula-tion which is on the wires themselves, the idea being that the insula-tion of the conductors from each other and from other conductingmaterials must be sufficient to furnish the necessary protection incase the wire coverings are defective or become injured in any… … Fig. 58.* Approved Overhead Wiring and arms. For such cases special rules are established. Fig. 58shows a good example of overhead wiring in which an iron pipe maybe seen protecting wires up the post, while the wires on ceiling andaround beams are very well arranged and supported. In damp or wet…
Electrical engineering
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