Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 218
e, short circuit thefields of the machine A that is to be cut out, and thenshort circuit the whole machine and disconnect it. Switching arc circuits is somewhat confusing to onewho is not familiar with it, and it is advisable for anybeginner to study out the best methods for the par-ticular board… … Figure 140 Figures 140 and 141 show methods of controllingalternating current arcs operating in series. In Fig-
Electrical engineering · Electric testing
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