Cinematograph lamp circuit

(i) A separate and distinct circuit shall be provided for the supply to cinematograph lamps. Such circuit shall be controlled by a suitable main switch and fuses required in pursuance of rule 59; and there shall be in addition for each lamp a totally enclosed double pole iron clad switch and fuse placed in a convenient position within the enclosure. (ii) When the cinematograph lamp is working the electrical pressure across the terminals of the double pole switch shall not exceed 110 v. lts.