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 100
ure work. The part A screws on to thegas pipe and B to the fixture. The parts are separated by insulating material E, andthe outside of the joint is covered with moulded insulation D. In connecting fixtures tothe wiring, all wires should be kept away from the gas pipe above the joint, but they… … Tig. 893.—Canopy insulator. This fitting should be installed wherever there are metal ceilingsagainst which the canopies of fixtures might come. The canopy is the brass cup shapedpiece used at the top of fixtures to cover the joint, and is simply an insulating ring placedbetween the canopy and the…
Electrical engineering
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