ANSI/CSA AMERICA FC 3-2004 (R2017)

1.1.1
This Standard applies to ac and dc type portable fuel cell power systems, with a rated output voltage not exceeding 600 V, for commercial, industrial, and residential indoor and outdoor use in non-hazardous locations, in accordance with the Rules of the National Electric Code, ANSI/NFPA 70.
1.1.2
This Standard does not apply to portable fuel cell power systems that are
a. Permanently connected (stationary) to either fuel or electric supply;
b. Designed to export power to the grid;