scope:

The scope of this document is to recommend a practice for the safe use of Class A Ground Fault Circuit Interrupters (GFCIs) on 100 ampere or lower 120-240 VAC single and three phase 60 Hz circuits where the voltage to ground does not exceed 150 VAC (hereinafter referred to as 15 to 100 ampere, 120-240 VAC, single and three phase circuits). These devices are used for personnel protection in entertainment applications encompassing places of assembly; the production of film, video, and broadcast; theatrical productions; carnivals; circuses; fairs; and similar events in North America.

FPN: Systems that are 240 VAC to ground (e.g., European power systems) are outside of the scope of the class A GFCI Standard (the GFCI Standard) so they are outside the scope of this E1.19 Recommended Practice.