(1) In any cinema arc lamps shall not be used in the auditorium or in any part open to the public withou t permission of the Electrical Inspector. When they are used in any part of such premises, special precautions shall be taken to guard against danger from fal l ing glass and incandescent part icles of carbon. All parts of the lamps, lanterns and fi t t ings whi ch are l iable to be handled (except by the persons employed to handle them) shall be insulated from the frame work.
(2) Any exposed portion of metal work of an arc lamp liable to become heated to a temperature sufficient to cause a conflagration by contact with scenery or other inflammable material shall be protected by a wire guard.
In no case shall arc lamps be suspended by the conductors.