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 271
Fig. 117. Method of Supporting Conduit Risers an angle of not less than 90 degrees, and carried a distance of not less thantwice the diameter of the cable from its vertical position. Cables so suspendedmay be additionallv secured to these insulators by tie wires. The second method is ilhistrated in… … Fig. 118. Cable Clamp Used inConduit System plates by clamps and the whole will finally be enclosed in a heavysteel box which will form the connecting bond in the riser system.Fig. 118 shows one form of cable clamp used for this purpose. Wires for conduit must be rubber-covered and have a double…
Electrical engineering
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