Luminaires for fixed lighting in Class II, Division 2 locations shall be equipped with enclosures that are _____ or otherwise identified for the location.
See answer and applicable Code reference
The correct answer is: b) dusttight
Article 502 covers the requirements for electrical equipment and wiring installed in Class II, Division 1 and 2 locations. As noted in Sec. 502.130(B)(2), luminaires for fixed lighting installed in Class II, Division 2 locations shall be provided with enclosures that are dusttight or otherwise identified for the location.