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 287
f Theater Borders for special plugs and cables by means of which arc lamps, flood lamps,and other temporary and portable devices may be connected. The circuits should have a capacity ofat least 35 amperes for arc lampsor 15 amperes for incandescentlamps, wired to the full capacityand controlled… … 255 132 UNDERWRITERS REQUIREMENTS a fire from any arc resulting from withdrawing the plug. These pockets may be for one or several plugs. Portable equipments for use on theater stages include, in addition to special devices of all sorts—arc lamps, bunch lamps, strip lights, pin plug connectors, and…
Electrical engineering
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