ARTICLE 540. MOTION PICTURE PROJECTION ROOMS


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ARTICLE 540. MOTION PICTURE PROJECTION ROOMS
ARTICLE 540. MOTION PICTURE PROJECTION ROOMS540.1. Scope. According to the definition of hazardous locations in Art. 500, a motion picture booth is not classed as a hazardous location, even though even the old nitrocellulose film is highly flammable. The film is not volatile at ordinary temperatures, hence, no flammable gases are present, and the wiring installation need not be explosionproof but should be made with special care to guard against fire hazards.540.2. Definitions.Figure 540-1 shows a professional projector, which is subject to lengthier and stricter…
Citation
Frederic P. Hartwell; Joseph F. McPartland; Brian J. McPartland: McGraw-Hill's National Electrical Code 2017 Handbook, 29th Edition. ARTICLE 540. MOTION PICTURE PROJECTION ROOMS, Chapter (McGraw-Hill Professional, 2017), AccessEngineering Export