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 344
Fig. 185. Section of Ear withTrolley Wire Soldered in Place … Fig. 186. Clamp Used with Groove Trolley Wire Span=Wire Construction. In some interurban roads and inmost roads in city streets, the trolley wire is suspended from spanwires stretched between poles located on both sides of the road-bedor the street. These span wires are of j-inch or |-inch…
Electrical engineering
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