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 214
broken, the device becomes demagnetizedand releases the arm, which returns to its starting position bythe action of a spring. The general arrangement of switches, cut outs and startingboxes should be in accordance with the requirements of theNational Electrical Code as follows: Each motor and… … GROUND DETECTOR LAMP8PILOT LAMP \
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
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