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 246
, a safety switch should be provided. This consistsusually of a single pole switch enclosed in a cast iron box, the handleof the switch projecting through a slot in the enclosing case. This safety switch is designed to be connected, by means of a separatethree wire cable, to that part of the… … SHUNT FIELDMOTOR Fig. 4,167.—Diagram of Otis style 2H mechanical reversing switch. Fig. 4,168. — Cutler-Hammer di-rect or alternating currentelevator car switch. The oper-ating lever and handle aremounted vertically on the frontof the switch case, the leverbeing latched in the central,or off…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
