International Library of Technology · Scranton, International Textbook Co. · leaf 136
Fig. 24. small hancllioles are provided wherever distributing pointsmay be necessary. These are much smaller and shallowerthan manholes and only run down as far as the conduit. 15 ELECTRIC TRANSMISSION. 21 In these handholes a service box is placed. Fig. 24 showsone style of service box with its…
Electrical engineering
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