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The Threewire Distribution System
14 other sections not shown
allowed aluminum ampacity amperes arc tube armored cable Bakelite ballast bend bimetal bolt bulb ceiling circuit breaker clamp coil compression concrete connection connectors contacts control circuit control switch cooling copper cord current flow damage designed device diameter distribution panel drill electrolier equipment fastener feet fittings fixtures fluorescent fluorescent lamps gauge GFCI grounding conductor heat loss heater hole inches installation insulation knockout lampholder length List live wires load located machine screw masonry material mechanical mercury-vapor lamp metal meter method motor control motor starter mounting National Electrical Code NEC Article neutral wire operating oven overload relay plaster box plug cap powder-actuated tool produced protection receptacle residential resistance rigid conduit Schematic sheath short-circuit shown in Figure shows sizes socket splice steel supply surface Table tape temperature terminal thread three-phase tion tool Typical unit voltage wall wiring diagram wiring systems