Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 214
Ma/n Switch V^^^t] Potent/a/ Potential \\\\Receptacle Plug j | I I III! \. Voltmet er Fuse ■X- - ill r\h\ .11 Potential ^Jj.4^^L^ n TransPormer^. ^/v^ ^,^^ |Alternator ¥m. 349.—Connections of plug switches for reading voltage of two-phase four-wire generator. Phases not interconnected. SECTION XVII… … Red Indicating LampClosed!)
Electric wiring
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