Emergency lighting circuit requirements

(i) The emergency lighting circuit shall supply not less than three lamps arranged so as to avoid, as far as possible, a single fault extinguishing all the lamps. (ii) Two way control from both within and without the enclosure may be adopted for the emergency lighting circuit provided that the control from outside the enclosure is suitably indicated, is not mounted on the same board as any of the general lighting circuits, and is placed in such a position as to be readily handled by a member of the Cinema Staff but inaccessible to the public.