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Theory and Basic Principles
Underwriters and Codes
Basic Principles and Measurements
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3-phase 3-way switches alternating current amperage amperes appliances asbestos battery black wire branch circuit building bulb candle power carrying capacity ceiling cent chapter circuit breaker Code in Sec Code requires conductor conduit connected connector consumed controlled cord covered demand factor diagram diameter disconnecting means Elec electrical equipment example feeder fixture floor fluorescent fluorescent lamp foot-candles full-load current fuses grounded wire horsepower illumination installation insulation knob and tube lamp larger light load locations locknut lumens maximum meter minimum motor mounted National Electrical Code neutral wire opening operating ordinary outlet box overcurrent device overcurrent protection panelboard permitted pull receptacle outlets rubber rubber-covered wire separate service entrance wires service switch shown in Fig simple single-phase sizes small appliances socket solder switch box Table terminal transformer type shown ungrounded usually voltage drop volts wall wattage watts white wire wire from source wires run