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 83
such c?those developed in stables, bakeries, etc., the wires should run onknobs or split insulators, and should be rubber covered. INSIDE WIRING 771 7. When wires are run at right angles to beams which are more than44 feet apart, a runnmg board should be used and the wirescleated to it as shown in… … J<--OUARD STPIP Pig. 858.—Method of protecting e.xposed wiring on low ceilings by two guard strips.
Electrical engineering
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