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 155
boxes containing three copper rings to which the con-ductors are connected and branched out to one or more mains which are led out throughfuses to supply the districts. UNDERGROUND WIRING 843 Pot Heads.—The upper end of a lateral cable is equippedwith a discharge bell, which is commonly called a… … Fig. 990.—Bottoai of General Electric manhole junction box; vi-w from manhole interior.The cables enter the bottom of the box as shown through composition nozzles to whichthe lead sheathes are united by a wiped solder connection, forming a permanent water andgas tight joint. Stuffing boxes are…
Electrical engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
