Electrical Engineering Practice: A Practical Treatise for Electrical, Civil, and Mechanical Engineers ...J. Wiley & Sons, Incorporated, 1927 |
Expressions et termes fréquents
3-phase A.C. supply alternating current amperes anode apparatus applied arc lamp arrangement automatic battery cables candle-power capacity carbon cathode ceiling cells charge circuit breaker coil conductor connected consumption copper cost D.C. voltage discharge distribution boards earth efficiency electric heating electrode electrolyte energy fittings flux frequency furnace fuse gasfilled heater higher illumination induction induction furnace installation insulated iron lampholders latter lighting load loss machine material maximum melting mercury metal motor motor-generator negative neon lamp neutral nichrome obtained operation outer output overload phase plates plug pole pressure primary radiation rectifier reduced reflector Regln Regulations resistance resistance welding resistor rotary converter secondary sheath short-circuit single-phase slip rings socket steel substations suitable surface switch synchronous Table temperature terminals thermal transformer transverter tube tungsten watts welding winding Wiring Rules
Fréquemment cités
Page 42 - Mica and asbestos and similar inorganic materials in built up form combined with binding cement. If Class A material is used in small quantities for structural purposes only, in conjunction with Class B insulation, the combined materials may be considered as Class B, provided the electrical and mechanical properties of the insulated winding are not impaired by the application of the temperature permitted for Class B material. (The word "impair...
Page 154 - ... main" means any electric line which may be laid down by the Undertakers in any street or public place, and through which energy may be supplied or intended to be supplied by the Undertakers for the purposes of general supply...
Page 421 - All electric heating and cooking appliances are to be so constructed and mounted that their supports and those parts which have necessarily to be handled in use cannot become heated to a temperature exceeding 130° F. (54° C.).
Page 158 - When connecting cells in series, care should be taken to see that the positive pole of one cell is connected to the negative pole of the next.
Page 238 - ... 5. Every fuse, and every automatic circuit-breaker used instead thereof, shall be so constructed and arranged as effectively to interrupt the current before it so exceeds the working rate as to involve danger. It shall be of such construction or be so guarded or placed as to prevent danger from over-heating, or from arcing or the scattering of hot metal or other substance when it comes into operation. Every fuse shall be either of such construction or so protected by a switch that the fusible...
Page 290 - Regulations for the Generation, Transformation, Distribution and Use of Electrical Energy in Premises under the Factory and Workshop Acts, 1901 and 1907...
Page 228 - ... are to be provided with cable glands or bushings, or be adapted to receive screwed conduit, according to the way in which the cables entering these fittings are run. (o) Each circuit-opening device is to be so constructed and arranged that when placed in the "off" position it cannot accidentally move sufficiently to close the circuit.
Page 315 - ... force of attraction" of the receiving area and inversely with the square of the distance between the source and terminal areas.
Page 230 - When more than one generator is installed, the generators not being arranged to run in parallel, an ammeter for each generator and one voltmeter, for use on any generator, fitted with a linked double-pole multiple-way switch or plug.
Page 42 - A insulation consists of cotton, silk, paper and similar organic materials when impregnated * or immersed in oil; also enamel as applied to conductors.