[Electric engineering.] . switch does not, however, disconnectthe lamp entirely from the circuit, andit is always dangerous to work on alamp under such circumstances whenstanding on the ground, because thereis liable to be a ground on some partof the line and thus establish a path forthe current through the person workingon the lamp. Since the introduction ofconstant-current circuits operating alarge number of lights, the danger fromshock has materially increased, and toget around this, lamps are now fre-quently equipped with individual cut-out switches that are separate from thelamp and that
[Electric engineering.] . switch does not, however, disconnectthe lamp entirely from the circuit, andit is always dangerous to work on alamp under such circumstances whenstanding on the ground, because thereis liable to be a ground on some partof the line and thus establish a path forthe current through the person workingon the lamp. Since the introduction ofconstant-current circuits operating alarge number of lights, the danger fromshock has materially increased, and toget around this, lamps are now fre-quently equipped with individual cut-out switches that are separate from thelamp and that will cut out the lamp and disconnect itentirely from the circuit. Fig. 52 shows a series arc lampequipped with a separate cut-out switch of this kind. 101. Looping in Lamps on Series Circuits.—When a lamp is looped in ona series circuit outof doors, it is notnecessary to providea cut-out switch atthe point where itis cut into the line,though, as mentionedin the previous ar-ticle, switches are FlG 53- sometimes placed at. Fig. 52.
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