Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 70
Figs. 3,879 and 3,880.—Powers rheostats. The type shown in fig. 3,879 is designed for use on110 volt circuits and will carry 25 amperes without overheating. The coils are so supportedthat any of them may be replaced when desired. Adjustment is effected by means of a leverswitch. Fig. 3,880 shows…
Electrical engineering
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