CAP. 172]
[r. 76 cont.]
Switch-boards, platforms, etc.
Wiring.
Places of Public Entertainment.
(5) The rating of switches which are liable to frequent operation shall be for currents 50 per cent in excess of the maximum current of the main circuits or sub-circuits controlled.
(6) When practicable motor-starting switch gear shall be installed close to the motor controlled thereby and shall be so placed that the motor is clearly visible to the operator. Any apparatus or switch provided for speed control or for stopping shall, if installed away from the motor, be so arranged that it cannot be used as a starter.
If in any case the permission of the licensing authority in writing is given for the remote control of motors, a suitable isolating switch shall be installed close to the motor.
(7) Ironclad and other enclosed switches, other than tumbler switches, shall have the "On" and "Off" positions clearly indicated.
(8) Switches and cut-outs shall be labelled as may be considered necessary by the licensing authority, to indicate clearly the main circuits or sub-circuits which they control.
77. (1) Ample space shall be provided for the convenient operation and proper maintenance of all switch gear; any platform provided for such purposes shall be of fire-resisting construction, and the floor shall be of a non-conducting material or shall be covered with an insulating mat. Guardrails and step-ladders with handrails shall be provided where considered necessary by the licensing authority.
(2) If considered necessary by the licensing authority for obviating risk of shock, guardrails shall be constructed of English oak or teak, and any metal within reach of a person on the platform shall be satisfactorily protected.
78. (1) Wiring shall not be run in a ventilating duct, flue or air shaft, or installed in a lift unless it is essential for the operation of the lift.
(2) A cable duct shall be stopped at any point at which it passes through a fire-resisting wall or floor so as to prevent the passage of fire or smoke from one section of the duct to another.
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Page 316
Page 316
CAP. 172]
[r. 76 cont.]
Switch- boards, platforms. etc.
Wiring.
Places of Public Entertainment.
(5) The rating of switches which are liable to frequent operation shall be for currents 50 per cent in excess of the maximum current of the main circuits or sub-circuits controlled.
(6) When practicable motor-starting switch gear shall be installed close to the motor controlled thereby and shall be so placed that the motor is clearly visible to the operator. Any apparatus or switch provided for speed control or for stopping shall, if installed away from the motor, be so arranged that it cannot be used as a starter.
If in any case the permission of the licensing authority in writing is given for the remote control of motors, a suitable isolating switch shall be installed close to the motor.
(7) Ironclad and other enclosed switches, other than tumbler switches, shall have the "On" and "Off" positions clearly indicated.
(8) Switches and cut-outs shall be labelled as may be considered necessary by the licensing authority, to indicate clearly the main circuits or sub-circuits which they control.
77. (1) Ample space shall be provided for the conveni- ent operation and proper maintenance of all switch gear; any platform provided for such purposes shall be of fire- resisting construction, and the floor shall be of a non- conducting material or shall be covered with an insulating mat. Guardrails and step-ladders with handrails shall be provided where considered necessary by the licensing authority.
(2) If considered necessary by the licensing authority for obviating risk of shock, guardrails shall be constructed. of English oak or teak, and any metal within reach of a person on the platform shall be satisfactorily protected.
78. (1) Wiring shall not be run in a ventilating duct, flue or air shaft, or installed in a lift unless it is essential for the operation of the lift.
(2) A cable duct shall be stopped at any point at which it passes through a fire-resisting wall or floor so as to prevent the passage of fire or smoke from one section of the duct to another.
316
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