Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 203
vww mm … Fig. 329.—Connections for two-phasewatt-hour meter using series and shunt trans-formers. Fig. 330.—Connections for testing awatt-hour meter with a precision watt-hour meter. MEASURING INSTRUMENTS 193
Electric wiring
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