Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 324
uge should be used and heavier metal is necessary for all but thesmaller sizes of box to secure the requisite stiifness and durability. 289 166 UNDERWRITERS REQUIREMENTS Sockets and Receptacles. The almost endless variety of thesefittings may be classified in various ways, as for dry or for wet… … Fig. 149. Complete Panel Board in Steel Cabinet are called Edison screw-shells into which the base of the incandescentlamp is screwed, the shell being connected in the socket to one of thelead wires and the center contact to the other lead wire. In all typesthe design of the socket or receptacle…
Electrical engineering
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