ANSI E1.19-2009 pdf download ANSI E1 .1 9 – 201 5 Recommended Practice for the use of Class A Ground-Fault Circuit Interrupters (GFCIs) intended for personnel protection in the Entertainment Industry
2.5 Class A GFCI Standard: The harmonized, tri-national Standard for construction and testing of Class A GFCIs. The document was issued jointly by ANCE in Mexico as NMX J 520, CSA in Canada as CSA C22.2 No. 1 44.1 -06 and in the United States by UL as UL 943. The Standard is accepted by Mexico, the Canadian Electrical Code and the US National Electrical Code (NFPA 70).
2.6 Listed: Equipment or materials included in a list published by an organization that is acceptable to the authority having jurisdiction and concerned with evaluation of products and whose listing states that either the equipment, or material meets appropriate designated standards or has been tested and found suitable for a specified purpose.
2.7 Utilization equipment: Equipment that uses electrical power to produce a desired effect such as light (luminaires), heat (cooking equipment), or motion (motors).
3 Entertainment industry application types defined
3.1 Assembly occupancies: Includes but not limited to convention centers, armories, municipal buildings, tents, gymnasiums, hotel ballrooms and churches intended for the assembly of 1 00 or more persons. (US National Electrical Code Article 51 8 and Mexico Electrical Code Article 51 8)
3.2 Theatres: All buildings or that part of a building or structure, indoor or outdoor, designed or used for presentation, dramatic, musical, motion picture projection, or similar purposes and to specific audience seating areas within motion picture television studios. These areas are within the scope of US NFPA 70 (National Electrical Code) Article 520, Mexico Electrical Code Article 520 and Canadian Electrical Code Section 44. Informational note: A covered outdoor stage area for the above purposes, even if it falls within a carnival, fair or amusement park area, is considered part of a theatre.
3.3 Carnivals, circuses, fairs, sporting events and similar events: The portable wiring and equipment for the above including wiring on all structures. These areas are within the scope of US NFPA 70 (National Electrical Code) Article 525, Mexico Electrical Code Article 525 and Canadian Electrical Code Section 66.
3.4 Motion picture studios and similar locations: Professional television and motion picture studios and exchanges, factories, laboratories and stages. These areas are within the scope of US NFPA 70 (National Electrical Code) Article 530, and Mexico Electrical Code Article 530. Excluded are audience areas of television and motion picture studios that are considered part of a theatre.
3.5 Outdoor filming of motion picture, TV or video: An outdoor location used in the production of a motion picture, television or video production excluding areas open to the general public.
4 Class A GFCI products 4.1 Response time The GFCI standard, UL 943, specifies a maximum response time to open the circuit that is a function of the detected ground fault current. The permissible response time can be in the range from virtually instantaneous to 5.59 seconds if the current is 6 mA. As the fault current increases the maximum allowable time to open a circuit decreases, with a response time less than 0.56 seconds being required at 30 mA compared to 5.59 seconds at 6 mA. The conventional wisdom is that the faster the response times the better, but GFCIs with fast response times are susceptible to nuisance tripping in electrically noisy environments.