Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U. S. seacoast defenses .. (1904)
United States. War Dept · Washington, Govt. print. off. · leaf 204
lt;iuirements onjiage 61 of Ite C. Bs. (inverse time element). Magnet iron parts are copper-plated. 150 HANDBOOK FOR ELECTRICIANS. 4. Switches and circuit-breakers are— (a) Mounted on small slate, porcelain, or marble bases, or preferably on theswitchboard when used there, make sliding and secure… … 197. Cabinet Panel; Six Double Branches, Six F. S., One M. S. (h) All conducting parts have such cross-section that heating from maximumC can not be felt by the hand. (c) All switches are double pole; snap for 10 amperes or less; knife for largerbut not smaller than 50 amperes; in conduit not at…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
