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 106
r if,s. yuo to 909.—Sprague multilet covers. Fig. 905, six wire porcelain cover; 906, P & S,rec. cover; 907, cover for five ampere snap switch; 908, G. E. and P. & S. rec. cover; 909,cover for ten axnpere snap switch. 11. In all cases, the interior diameter of the conduit installed should…
Electrical engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
