Resolución 2535: adopta el Código Eléctrico Nacional, versión 1993. (Sustituye el Anejo A del Reglamento 4435)

(FPN): For further information on protecting openings in projection rooms handling cellulose nitrate motion picture film, see Life Safety Code, NFPA 101-1991 (ANSI). 540-11. Location of Associated Electrical Equipment. (a) Motor Generator Sets, Transformers, Rectifiers, Rheostats, and Similar Equipment. Motor generator sets, transformers, rectifiers, rheostats, and similar equipment for the supply or control of current to projection or spotlight equipment shall, if practicable, be located in a separate room. Where placed in the projection room, they shall be so located or guarded that arcs or sparks cannot come in contact with film, and motor generator sets shall have the commutator end or ends protected as provided in Section 520-48. (b) Switches, Overcurrent Devices, or Other Equipment. Switches, overcurrent devices, or other equipment not normally required or used for projectors, sound reproduction, flood or other special effect lamps, or other equipment shall not be installed in projection rooms. Exception No. 1: In projection rooms approved for use only with cellulose acetate (safety) film, the installation of appurtenant electrical equipment used in conjunction with the operation of the projection equipment and the control of lights, curtains, and audio equipment, etc., shall be permitted. In such projection rooms, a sign reading "Safety Film Only Permitted in This Room" shall be posted on the outside of each projection room door and within the projection room itself in a conspicuous location. Exception No. 2: Remote-control switches for the control of auditorium lights or switches for the control of motors operating curtains and masking of the motion picture screen. (c) Emergency Systems. Control of emergency systems shall comply with Article 700, Emergency Systems. 540-12. Work Space. Each motion picture projector, floodlight, spotlight, or similar equipment shall have clear working space not less than 30 inches (762 mm) wide on each side and at the rear thereof.