This paper evaluates the relationship between Hazardous Rated Electrical Equipment; equipment which is suitable for installation in Class I, Division 1 (Zone 1) or Division 2 (Zone 2) locations, and Arc Rated Switchgear; equipment designed to withstand the effects of an internal arcing fault. Using UL 1203 (Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for use in Hazardous (Classified) Locations), IEEE C37.20.7
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