International Library of Technology · Scranton, International Textbook Co. · leaf 137
nother style of service box for use on the three-wire system.In this four-way box the main cables are fastened to ter-minals instead of passing straight through. Fig. 26 showsa handhole with its service box arranged for deliveringcurrent to overhead conductors. The main feeders, runningfrom manhole… … 27. Joining Cables.—For low-pressure work, cablesare usually joined in the manholes by means of couplingboxes or junction boxes. Sometimes, however, joints mustbe made without the use of these boxes, in which casesthe job must be very carefully done. First, the soldered end of the cable is cut off…
Electrical engineering
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