Section 45 in The M.P. Cinemas (Regulation) Rules, 1972
45. Wiring in casing.-
If casing be used, it shall be of hard teak wood. Each conductor shall be laid in a separate groove, unless previous permission is obtained from the Electrical Engineer to Government to vary this condition. In no circumstances shall wires of unlike polarity be laid m the same groove, nor, wires of the same polarity belonging to the different circuits, A, B or C. The cover shall be secured with screws. Casing shall not be used where it is liable to injury from weather or leakage of water, not shall it be recessed into plaster.
