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 482
TO GROUND (250 VOLTS) (250 VOLTS) (500 VOLTS) … MOTOR (500 VOLTS) WMAn ^WWW MOTO CT\AAn (500 VOLTS) * (500 VOLTS) (500 VOLTS) [<>w MOTOR 4 Figs. 3,557 and 3,558.—Diagrams of series parallel four motor control. Fig. 3,557 series runningposition, all resistance cut out; fig. 3,558, parallel running position, all resistance cut out. operation…
Electrical engineering
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