【法规名称】
【法规编号】 79763 什么是编号？
【正 文】
第2页 CAP 406A ELECTRICITY SUPPLY REGULATIONS
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[接上页] (ii) the supply to every arc lamp shall be controlled by means of an efficient cut-off switch, placed in such a position as to be easily handled by the person in charge of the arc lighting, and connected so that by its means all pressure can be cut off from the arc lamp itself and from any regulating switch, resistance or other device in connection therewith: Provided that where the arc lamps are connected in series across the outer conductors of a three-wire system, it shall be sufficient if 1 such switch be provided for each series of arc lamps;(iii) switches, efficient fuses or other automatic cut-outs shall be provided, so as to protect the circuits from excess of current, and all switches and cut-outs shall be so inclosed and protected that there shall be no danger of any shock being obtained in the ordinary handling thereof, or of any fire being caused by their normal or abnormal action;(c) where the supply is for incandescent lamps in series, unless the Director of Electrical and Mechanical Services otherwise allows- (L.N. 76 of 1982; L.N. 298 of 1982) (i) the consumer's wires forming the connections to the incandescent lamps, or otherwise in connection with the supply, shall be completely inclosed in strong metal casing and this casing together with the switches and lamp holders, if metallic, shall be efficiently connected with earth; (ii) switches, efficient fuses or other automatic cut-out shall be provided, so as to protect the circuits from excess of current, and all switches and cut-outs shall be so inclosed and protected that there shall be no danger of any shock being obtained in the ordinary handling thereof, or of any fire being caused by their normal action;(d) where the supply is for any special purpose other than those above mentioned, or where the pressure of the supply exceeds the limits of medium pressure, it shall be subject to such other regulations as the Chief Executive in Council may prescribe. (61 of 2000 s. 3) Cap 406A reg 2A Low and high voltage supply (1) The company shall supply low voltage electricity to the main incoming terminals of an owner's electrical installation at a frequency of 50Hz (+/-2%) at either or both of the following- (a) 220V (+/-6%) root mean square alternating current between a phase conductor and earth for a single phase supply; and (b) 220V (+/-6%) root mean square alternating current between a phase conductor and earth and 380V (+/-6%) alternating current between phase conductors for a 3 phase supply.(2) The company shall supply high voltage electricity to the main incoming terminals of an owner's electrical installation at a frequency of 50Hz (+/-2%). (L.N. 344 of 1992) Cap 406A reg 2B Application of regulation 2A(1) (1) Regulation 2A(1) applies to- (a) an electrical installation that is, on or after 3 December 1992, supplied with electricity for the first time; and (b) all other electrical installations in accordance with orders of the Director who shall have regard to the voltage upgrading programme recommended by the Supply Voltage Advisory Committee (appointed by the Financial Secretary, G.N. 535 in Gazette No. 7/1991 of 13 February 1991).(2) Despite regulation 2A, where an electrical installation has been designed for 200V single phase supply or 346V 3 phase supply and has been wholly or substantially completed before 3 December 1992, the Director may authorize the company to supply electricity to the installation at the designed voltage where he considers that it is not practicable to convert the installation to receive the higher voltage. (3) Despite paragraph (1)(a), where an electrical installation has been designed for 200V single phase supply or 346V 3 phase supply and has been wholly or substantially completed before 3 December 1992, the Director may authorize the company to supply electricity to the installation at the designed voltage until a date specified by the Director when regulation 2A(1) shall apply. (4) Despite paragraph (1)(a), where an electrical installation is to be connected to a part of the company's low voltage supply network that has not been converted to the voltage referred to in regulation 2A(1), the Director may authorize the company to supply electricity to the installation at the unconverted voltage until a date specified by the Director when regulation 2A(1) shall apply. (L.N. 344 of 1992) Cap 406A reg 3 Introduction of three-wire system into consumer's premises When the pressure between the outer conductors of a three-wire system exceeds 250 volts and the 3 wires of the system or 2 pairs of wires are brought into a consumer's premises, the supply shall be given to 2 pairs of terminals arranged in such a manner that there shall be no danger of any shock, and the wiring from those terminals shall be kept distinct. Cap 406A reg 4 Minimum size of conductors (1) The sectional area of the conductor in any electric line other than low tension laid or erected in any street after 2 December 1921, shall not be less than that of a strand of 7 wires, each of which is of No. 22 standard wire gauge, and the sectional area of every wire in a strand forming any such conductor shall not be less than that gauge, and where such stranded conductor is erected it shall be suspended from a suitable bearer wire or shall be protected by a suitable cradle fixed underneath. In the case of low tension conductors in any electric line the sectional area shall not be less than that of single wire of No. 16 standard wire gauge efficiently insulated. |
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