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- · New York, T. Audel · leaf 159
that the light may be controlled fromtither switch. It is a bad arrangement to have travellers and return wire locatednear each other, as it is possible by this method to connect two individual circuits to-gether and possibly overload one of the two feed wires of each circuit. However,should each… … 2 WAY SWITCH ^^^^^^
Electrical engineering
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