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Page 388

| Field, magnetic, 7, 8, 23 |

| Flashover, 35, 38, 58, 118-19 |

| Fluorescent lighting, 20, 101 |

| Flux, magnetic, 6, 27, 98 (see also Magnetic field) |

| Frequency, 8, 13, 20, 81 |

| meter, 337, 339 |

| Fuller's Earth, 62 |

| Furnace, electric, 53 |

| Fuses, 199-217 |

| boric acid, 206-7, 213 |

| construction, 203-4 |

| contacts, 215 |

| coordination, 200-203 |

| cut out, 209-13 |

| cut out, oil, 49, 52 |

| de-ion, 211, 213 |

| double venting, 210-11 |

| durability, 215 |

| enclosed, 205 |

| expulsion, 209-10, 213 |

| grounding, 215 |

| insulation, 215 |

| interrupting capacity, 214 |

| link, 205 |

| liquid filled, 206 |

| maintenance, 215-16 |

| oil, 206-7 |

| open, 205 |

| operation, principle of, 199-200 |

| power, 200 |

| safety, 214 |

| sand filled, 206 |

| selection, 213 |

| three shot, 212 |

| time clearing, 200 |

| used as disconnect, 211 |

| G |

| Gas, 31 |

| pressure, 31 |

| Gasket, 40, 48, 59, 62 |

| Gas-oil seal, 31 |

| Gauges, 20, 35, 59 |

| Generation, 266-67 |

| Generator, 4, 14, 73-4 |

| Great Barrington, Mass., 3 |

| Ground, 40, 51-53, 59, 62, 66-67, 73, 77-78, 81, 85, 90, 101, 118, 155, 215, 226 |

| Grounding, fuse, 215 |

| lightning arrester, 226 |

| switch, 48 |

| Ground relay, 273-74 |

| H.. |

| Halogen lamp, 101-2 |

| Hand hole, 37, 59 |

| Hangers, 44-45 |

| Harmonics, 81 |

| Heat, 17-19, 23, 26-32, 56, 59-60, 64-65, 76, 81, 114 |

| indicators, 56 |

| losses (see I2R losses) |

| Heat run, 116 |

| Hot oil, 31-32 |

| Hot spot, 29, 56 |

| Hum (see Noise) |

| Hydraulic jack, 3, 4 |

| Hydrometer, 294-96 |

| Hysteresis, 17-18, 22 |

| I |

| I2R loss, 18, 113-14 |

| Ignition coil, 104 |

| Ignitron, 320-23 |

| IL transformer, 99-100 |

| Impedance, 12-13, 16-18, 72, 76-79, 83, 91, 113-17, 305 |

| relay, 266 |

| Impulse, 38, 118-19 (see also Surge arrester) |

| voltage level, 229, 232 |

| wave, standard, 119, 232 |

| Indicating lights, 103 |

| Indicator, breaker travel, 171-72 |

| control, 159, 165 |

| phase rotation, 359-60 |

| Induced voltage, 8, 10, 14, 120 |

| test, 120 |

| Induction voltage regulator, 91-2, 113-14 |

| Inductance, 9, 12-13, 17, 113, 305 |

| mutual, 11 |

| self, 9, 11, 16 |

| Inductive reactance, 11, 13, 17 |

| Inerteen, 34, 113 |

| Inspection, 56, 58-59, 66-67 |

| external, 58-59 |

| internal, 59-60 |

| Installation, transformer, 43 |

| Instruments, 328-61 |

| ammeter, 324-30 |

| clamp-on meter, 347 |

| connection of, 348-49 |

| construction, 359-60 |

| demand meter, 340-45 |

| electrodynanomometer, 330, 332, 334 |

| frequency meter, 337, 339 |

| function, 328 |

| maintenance, 360-61 |

| maximeter, 347 |

| Megger, 62-65, 120, 355, 357-58 (see also Megger) |

| ohmmeter, 355 |

| operation, 360-61 |

| operation, principle of, 328-29 |

| permanent magnet coil, 329-30 |

| phase rotation indicator, 359-60 |

| power factor meter, 337 |

| reactive volt-ampere-hour meter, 340, 357 |

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