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 95
to support the switch box. These wooden cleats should not be set out flush with theouter edges of the studs, but should be set about J-g in. back, as illustrated, to allow aspace in which the plaster can take a grip. through each of the beams, insert porcelain tubes therein, slip the wiresthrough… … STUD jVknob \V—LOOM STUDS knobVl LOOM-V/
Electrical engineering
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