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 91
Transmitter Wiresfrom Local CableLine Cable Binding Posts CombinedJacAs & Stgna/s C/ear/ng out Drops A/o. 34 fnterrupter forFurnishing Ringing Current Loca/Ceb/e ConnectingRack 7 TwistedPair Carbon f+> … Battery Cabinetn°/440Z/ncc-t rv.ghr A tar-no OperafO^S Berfery Transmitter Battery Batteries must be connectedCarbon to Z>c andnotCarbonto Carbon or Z/nc to Zinc. Fig. 3,003.—Rear of magneto switchboard showing connecting rack and wiring to be run by-installer. How to install: 1. Setting up the…
Electrical engineering
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