International Library of Technology · Scranton, International Textbook Co. · leaf 214
edium of an insulator. The cross-arm t carries feeders to supply currentat distant points. The pole may alsobe utilized to carry an arc lamp shownat / in (a). Instead of a tension bolt,there may be placed on the top ofthe pole, as shown at a, Fig. 28, aratchet provided with a counter-bal-anced pawl…
Electrical engineering
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