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 73
Fig. 2.203 and 2.204.—Bus transfer plug switch. The method of supposing the contact ra the pane^ - : 1 ir of the same l.eigru as the receptacle, oed to a brass connecting or bus bar which in turn is fastened to the receptacle. Forms of Break.—On high pressure circuits there are several- of switch:… … Fig. 2.205.—.\mmeter jack. This plug switch is insulated for high pressure ar.d consists oftwo parts: the ammcicr jack, and the ammeter jack plug, cable, and bushing. The receptacle, his simple:- of a brass bushing well insulated from th and protected on the front of the panel by a porcelain…
Electrical engineering
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