NEC Article 505 indicates that equipment must be marked with the "AEx" rating for installation in a hazardous location and makes no mention of the "Ex" rating. However the NEC handbook indicates, under 500.9, that the "Ex" rating is based on the IEC standards and that "Ex" meets Both the European "EEx" standards and the American "AEx" standards.
Is the "Ex" rating acceptable in the US?
Is there a better explanation of this somewhere else?
Is the "Ex" rating acceptable in the US?
Is there a better explanation of this somewhere else?