Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 156
RHEOSTATS AND CONTROLLERSLine U L/ne — 145 … (P/aCe FiQ. 226. ■ Fig. 227. Fig. 226.—Connections for a dial rheostat with loop resister. Contact arm being arrangedto slide directly over the surface of the resister. Fig. 227.—Two units of the type shown in Fig. 226 connected in series. t/ns
Electric wiring
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