Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 151
Fig. 220.—Internal connections of a 200-volt lamp with twu carbons in series. Fig. 221.—Internal connections of aseries parallel direct-current lamp. Groupsof five lamps in series are connected across500-volts circuits. LAMP MECHANISM CONNECTIONS 141 tkftrkoltf ccnnecfet/f9 frame 5toi ^i IL -Ji
Electric wiring
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