Electricians' operating and testing manual; (1910)
Horstmann, Henry C. [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. H. Drake & co · leaf 215
force current throughcircuit 2 and the permanent plugs may now be placed Arc Lamps 213 in the center of the holes. If circuit 2 should containmany lights or be open, a long flash would accompanythe withdrawal of the plug. To disconnect circuit 3 from machine B insert aux-iliary plug, as indicated… … Figure 139 connecting the two machines in series on all of thecircuits in use. When this is done, 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…
Electrical engineering · Electric testing
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