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16-candlepower acid active material adjusted allowed alternating current alternating-current ammeter amount ampere-hours amperes annunciator arc lamps arc-light armature arrangement bell booster burn candlepower carbon carry cells cent center of distribution circuit circular mils conductors conduit connected in series constant-current constant-potential cut-out direct current direct-current discharge distance drop dynamo efficiency electric electrolyte enclosed arc enclosed-arc lamp feeders feet filament fixture fuse globe ground hence illumination incandescent lamps inch indicated installed insulation large number light load lower machine magnet mains means method motor necessary Nernst lamp number of lamps ohms open-arc lamp operated ordinary outlet pipe placed plug porcelain positive plate pressure primary reactance regulation resistance rheostat screws secondary short-circuiting shown in Fig shows shunt coil side socket station supplied switch switchboard temperature terminals three-wire system tion transformer tube two-wire Underwriters usually voltage voltmeter volts watt-hour wattmeter watts wire
Сторінка 3 - The American Institute of Electrical Engineers; The American Society of Mechanical Engineers; The American Society of Civil Engineers; The American Society of Mining and Metallurgical Engineers; and The American Society for Testing Materials.
Сторінка 10 - Must be so spliced or joined as to be both mechanically and electrically secure without solder. The joints must then be soldered, to insure preservation, and covered with an insulation equal to that on the conductors.
Сторінка 64 - Insulation Resistance — The wiring in any building must test free from grounds; ie, the complete installation must have an insulation between conductors and between all conductors and the ground (not including attachments, sockets, receptacles, etc.) of not less than the following: Up to 5 amperes 4,000,000 ohms...
Сторінка 68 - ... b. Must be placed at every point where a change is made in the size of wire [unless the cut-out in the larger wire will protect the smaller.
Сторінка 27 - Circuitbreakers must not be set more than 30 per cent. above the allowable carrying capacity of the wire, unless a fusible cut-out is also installed in the circuit.
Сторінка 12 - Must be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they cannot come in contact with the pipe accidentally. Wires should be run over, rather than under, pipes upon which moisture is likely to gather or which, by leaking, might cause trouble on a circuit.
Сторінка 34 - Rigid supporting requires under ordinary conditions, where wiring along flat surfaces, supports at least every four and one-half feet. If the wires are liable to be disturbed, the distance between supports should be shortened. In buildings of mill construction, mains of No.
Сторінка 56 - The object of a tube or conduit is to facilitate the insertion or extraction of the conductors to protect them from mechanical injury and, as far as possible, from moisture. Tubes or conduits are to be considered merely as raceways, and are not to be relied upon for insulation between wire and wire, or between the wire and the ground.