International Library of Technology · Scranton, International Textbook Co. · leaf 634
h are here shown as 40 INTERIOR WIRING. 27 simple lever switches. There are a number of differentmakes of switches for this purpose, but the principle of allis the same, thoughthe mechanical details may differ. Bycomparing the diagrams with whatever make of switch hemay have to install, the student… … Fig. 18. of connection (a) or (b) may be used, and the one that willbe most convenient in any given case will depend to someextent on the general layout of the wiring. A modification of this arrangement is shown in Fig. 19 (a)and (b). In this case, one of the three-way switches isreplaced by a…
Electrical engineering
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