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), 1833-1928 · New York : T. Audel & Co. · leaf 72
OVCR … CHART —PORCELMN CQWtTiMLOCK JHUT6 CAD CABLE Figs. 2,977 and 2,978.—Outdoor cable connecting box. This device is placed in a back yardin cities, or on a pole in the country, and accommodates the two line wires for each tele-phone in a block or street. assigned and the B operator plugs a cord plug in…
Electrical engineering
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