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 325
rated 250 watts 250 volts, or 660 watts 250 volts, with theadded stipulation that this rating shall not be interpreted as per-mitting the use at any voltage of current above 2| amperes, or 6amperes, respectively. Keyless sockets and receptacles of standard types are rated660 watts, 250 volts, but… … Weatherproof sockets having no exposed current-carrying partsmay be rated 660 watts, 600 volts, and thus may be used in serieson 600-volt circuits. 291 168 UNDERWRITERS REQUIREMENTS The most common abuse of sockets is to employ them as out-lets for currents far in excess of what they or the wiring…
Electrical engineering
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