Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 343
e understood that after breaking a current by a cir-cuit breaker the mere opening of a knife switch cannot be calledopening a circuit, because after the breaker opens there is noelectrical circuit. 344 ELEMENTARY ELECTRICITY end of the rod which passes up into the hollow formedby the nameplate. In… … Fig. 162. Diagram of Fig. 161. In Figs. 163 and 164 the carbon contacts are seenat the top in the shape of carbon blocks. In Fig. 163the main contact is plainly shown below, while in Fig.164 the main contact is concealed by a metal housing. The mechanical connection between the main (cop-per)…
Electricity
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