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Page vii

| Fluorescent Lighting |

| 101 |

| Mercury, Sodium, and Halogen Lamps |

| 101 |

| Motor Starting |

| 102 |

| X-Ray Equipment |

| 103 |

| Welding Transformers |

| 103 |

| Small Intermittent-Use Equipment |

| 103 |

| Ignition Coils |

| 104 |

| Review |

| 104 |

| 7 Testing and Troubleshooting |

| 107 |

| Low-Voltage Tests |

| 107 |

| Resistance Tests |

| 108 |

| Polarity Tests |

| 108 |

| Resistance and Polarity Tests |

| 110 |

| Phase Displacement Test |

| 110 |

| Ratio Tests |

| 112 |

| Impedance Tests |

| 113 |

| Transformer Losses |

| 114 |

| Continuity Test for TCUL Transformers |

| 115 |

| Temperature Test or Heat Run |

| 116 |

| Loading Transformers Under Test |

| 116 |

| High Voltage Test |

| 117 |

| Impulse Test |

| 118 |

| Induced-Voltage Test |

| 120 |

| Insulation-Resistance Test |

| 120 |

| Liquid Insulation Tests |

| 121 |

| Bushing Power-Factor Test |

| 121 |

| Transformer Troubles |

| 124 |

| Review |

| 124 |

| Part II Electrical Power Equipment |

| 8 Circuit Breakers: Design and Construction |

| 129 |

| Function |

| 129 |

| Interrupting Duty |

| 129 |

| Rating |

| 131 |

| Principle of Operation |

| 132 |

| Types of Breakers Categorized by Insulation Medium |

| 133 |

| Construction |

| 138 |

| Types of Contacts |

| 138 |

| Arc Control |

| 142 |

| Insulation Requirements |

| 146 |

| Insulation Coordination |

| 150 |

| Types of Indoor and Outdoor Breakers |

| 152 |

| Grounds |

| 155 |

| Review |

| 155 |

| 9 Circuit Breakers: Operation and Maintenance |

| 157 |

| Controls |

| 157 |

| Methods of Operation |

| 159 |

| Testing |

| 168 |

| Vacuum and Sulphur Hexafluoride Breakers |

| 171 |

| Troubleshooting |

| 172 |

| Review |

| 172 |

| 10 Disconnecting Devices |

| 178 |

| Switches |

| 178 |

| Oil Switches |

| 179 |

| Air Switches |

| 180 |

| Contacts |

| 186 |

| Other Disconnecting and Switching Devices |

| 188 |

| Maintenance |

| 194 |

| Review |

| 196 |

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