Transactions of the American Institute of Electrical EngineersAmerican Institute of Electrical Engineers., 1898 "Index of current electrical literature" Dec. 1887-1890 appended to v. 5-7. |
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algebraic quantity allotropic alternating current amount amperes apparatus armature automatic system brush cable capacity carbon cent circuit coal Code coil commutation complex quantity condenser conductors connected constant cost curve direct current discharge duplex Edison Effect effect ELECTRICAL ENGINEERS electromotive force energy experiments fact filament galvanometer globe heat hyperbolic inch increase induction motor insulating iron lamp light load machine magnetic maximum mechanical messages meter method moisture molecules Morse National Electrical Code negative leg obtained operation ordinary paper plate polarizing positive power factor practical present Prof reactance receiver record regard resistance RING RING III rotary converter secondary segment spark speed steel Steinmetz synchronous TABLE tape temperature terminal tion torque efficiency transmission transmitted tube vacuous space vehicle voltage volts watts waves Wheatstone wheel wire words per minute York
Популярні уривки
Сторінка 495 - The lower limit is .specified for rubber-covered wires to prevent gradual deterioration of the high insulations by the heat of the wires, but not from fear of igniting the insulation. The question of drop is not taken into consideration in the above tables. The carrying capacity of Nos 16 and 18, B & S.
Сторінка 491 - Ground wires for lightning arresters must not be attached to gas,pipes within the buildings. It is often desirable to introduce a choke coil in circuit between the arresters and the dynamo. In no case should the ground wire from a lightning arrester be put into iron pipes, as these would tend to impede the discharge. 6. Care and Attendance — a. A competent man must be kept on duty where generators arc operating. b. Oily waste must be kept in approved metal cans and removed daily.
Сторінка 494 - Must be so spliced or joined as to be both mechanically and electrically secure without solder. They must then be soldered to insure preservation, and the joint covered with an insulation equal to that on the conductors.
Сторінка 504 - All elbows or bends must be so made that the conduit or lining of same will not be injured. The radius of the curve of the inner edge of any elbow not to be less than three and one-half inches.
Сторінка 509 - Portable Conductors — a. Must be made of two stranded conductors, each having a carrying capacity equivalent to not less than No. 14 B. & S. wire, and each covered with an approved insulation and covering. Where not exposed to moisture or severe mechanical injury, each stranded conductor must have a solid insulation at least...
Сторінка 500 - No. 17 a) for each lamp or each series of lamps. The branch conductors should have a carrying capacity about fifty per cent, in excess of the normal current required by the lamp, to provide for heavy current required when lamp is started or when carbons become stuck without over fusing the wires.
Сторінка 514 - AMERICAN INSTITUTE OF ARCHITECTS AMERICAN INSTITUTE OF ELECTRICAL ENGINEERS AMERICAN SOCIETY OF MECHANICAL ENGINEERS AMERICAN STREET RAILWAY ASSOCIATION FACTORY MUTUAL FIRE INSURANCE COMPANIES NATIONAL ASSOCIATION OF FIRE ENGINEERS NATIONAL BOARD OF FIRE UNDERWRITERS NATIONAL ELECTRIC LIGHT ASSOCIATION ^UNDERWRITERS' NATIONAL ELECTRIC ASSOCIATION GENERAL PLAN GOVERNING THE ARRANGEMENT OF RULES CLASS A.
Сторінка 510 - ... b. Must be placed at every point where a change is made in the size of wire [unless the cutout in the larger wire will protect the smaller (see No.
Сторінка 491 - A, must be provided with reliable ground detectors. Detectors which indicate continuously, and give an instant and permanent indication of a ground, are preferable. Ground wires from detectors must not be attached to gas-pipes within the building.
Сторінка 494 - 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.