(1) Properly constructed switchgear for disconnecting the supply of electricity to a mine or oil-field shall be provided at a point recommended by the Electrical Inspector of mines.
(2) At any time, when any cable or overhead line supplying electricity to the mine from the aforesaid switchgear is live, a person designated to operate the said switchgears shall be available within easy reach thereof:
Provided that in the case of gassy coal seam of second degree and third degree gassiness, the main mechanical ventilator operated by electricity shall be interlocked with the switchgear so as to automatically disconnect the power supply in the event of stoppage of main mechanical ventilator.
(3) When necessary in the interest of safety, any apparatus suitably placed, shall be provided for disconnecting the supply from every part of a system.
(4) If the Electrical Inspector of mines, in the interest of safety considered it necessary, he may direct that the apparatus specified in sub-regulation (3) shall be so arranged as to disconnect automatically, from the supply, any section of the system subjected to a fault.
(5) Every motor shall be controlled by switchgear which shall be so arranged as to disconnect the supply from the motor and from all apparatus connected thereto and such switchgear shall be so placed as to be easily operated by the person designated to operate the motor.
(6) A suitably rated switchgear incorporated with protective mechanism to disconnect automatically the supply in the event of conditions of over-current, earth fault or leakage, under voltage and single phasing.
(7) Auxiliary fan shall be interlocked with the switchgear controlling power supply to the in-bye face equipment of below ground coal mine for automatic disconnection of power supply in the event of the stoppage of the auxiliary fan.
(8) Every feeder of the mine shall be controlled by a suitably rated switchgear incorporated with protective mechanism in a manner so as to disconnect the supply automatically in the event of conditions of over-current, short circuit, single phasing, under voltage and earth fault or leakage as relevant.