International Library of Technology · Scranton, International Textbook Co. · leaf 297
except that blade Ahas a hole in the end instead of a handle. The switch ispulled open by means of a hook in the end of a handle about3 feet long, thus allowing the attendant to stand back somedistance and avoid the danger of his being burned by thearc. To avoid arcing from one switch to the next,… … Fig. 6. 6 ELECTRIC LIGHTING. 17 5. The Westinghouse Company make use of a high-tension switch in which the terminals are mounted at eachend of a porcelain cylinder. A copper rod or plungerpasses through these contacts or bushings and completesthe circuit. When the plunger is withdrawn, the arc…
Electrical engineering
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