xv Chapter 1 Electrical Fundamentals Review . . . .1 1.1 Basic Electrical Circuit Units . . . . . . . . 2 1.2 Basic Circuits . . . . . . . . . . . . . . . . . . . . . 3 1.3 Alternating Current. . . . . . . . . . . . . . . . 8 1.4 Utilization Voltages . . . . . . . . . . . . . . . 14 Chapter 2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . .21 2.1 Cause of Accidents. . . . . . . . . . . . . . . . 21 2.2 Accident Prevention . . . . . . . . . . . . . . 25 2.3 Helping an Injured Worker . . . . . . . . 28 2.4 First Aid Preparation. . . . . . . . . . . . . . 28 Chapter 3 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 3.1 Standard Construction Tools . . . . . . . 31 3.2 Electrical Tools . . . . . . . . . . . . . . . . . . . 35 Chapter 4 Electrical Prints, Specifi cations, and Codes . . . . . . . . 43 4.1 Electrical Print Reading . . . . . . . . . . . 44 4.2 Electrical Specifi cations. . . . . . . . . . . . 49 4.3 Building Codes. . . . . . . . . . . . . . . . . . . 49 Chapter 5 Wiring Methods . . . . . . . . . . . . . . . . . .61 5.1 General Rules and Requirements . . . 62 5.2 Wiring Methods. . . . . . . . . . . . . . . . . . 66 Chapter 6 Conductors . . . . . . . . . . . . . . . . . . . . . 85 6.1 Conductors . . . . . . . . . . . . . . . . . . . . . . 86 6.2 Code Requirements for Conductors . . . . . . . . . . . . . . . . . . . 91 6.3 Allowable Ampacities in Conductors. . . . . . . . . . . . . . . . . . . . 94 6.4 Voltage Drop. . . . . . . . . . . . . . . . . . . . . 98 6.5 Conduit Capacity . . . . . . . . . . . . . . . . 101 Chapter 7 Boxes and Conduit Bodies . . . . . . 105 7.1 Enclosures. . . . . . . . . . . . . . . . . . . . . . 105 7.2 Enclosure Sizing. . . . . . . . . . . . . . . . . 109 7.3 Outlet and Device Boxes. . . . . . . . . . .110 Chapter 8 Overcurrent Protection. . . . . . . . . . 117 8.1 Overcurrent . . . . . . . . . . . . . . . . . . . . 117 8.2 Overcurrent Protection Requirements . . . . . . . . . . . . . . . . . . . .118 8.3 Overcurrent Protective Devices. . . . 119 8.4 Conductor Taps . . . . . . . . . . . . . . . . . 124 Chapter 9 Service and Distribution . . . . . . . . 127 9.1 Service . . . . . . . . . . . . . . . . . . . . . . . . . 127 9.2 Distribution Systems . . . . . . . . . . . . . 133 Contents
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