1964_ELECTRICITY_SUPPLY_REGULATIONS — Page 4

A 4

CAP. 103]

Electricity Supply Regulations

[1984 Ed.

[Subsidiary]

Pressure of supply to

consumers.

GENERAL

2. The pressure of a supply delivered to any consumer shall not exceed the limit of low pressure except for special purposes, for which a medium pressure supply may be given on the consumer undertaking to comply with the following conditions-

(a) where the supply is for power purposes--

(i) the frame of every electric motor shall be efficiently connected with earth;

(ii) the consumer's wires forming the connexions to motors, or otherwise in connexion with the supply, shall be, as far as practicable, completely inclosed in strong metal casing efficiently connected with earth, or they shall be fixed in such a manner that there shall be no danger of any shock;

(iii) the supply to every motor 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 motor, and connected so that by its means all pressure can be cut off from the motor itself and from any regulating switch, resistance or other device in connexion therewith:

(iv) switches, efficient fuses or other automatic circuit- breakers 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;

(v) a notice shall be fixed in a conspicuous position at every motor and switch board in connexion with the supply forbiding unauthorized persons to touch the motors or apparatus;

(b) where the supply is for arc lamps in series--

(i) the consumer's wires forming the connexions to the arc lamps, or otherwise a connexion with the supply, shall be, as far as practicable, completely inclosed in strong metal casing efficiently connected with earth, or they shall be fixed in such a manner that there shall be no danger of any shock;

(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 connexion 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;