In Class II, Division 2 locations, enclosures for certain devices must be what?

In Class II, Division 2 locations, the requirement for enclosures for certain devices is that they must be dusttight or otherwise identified for the specific conditions present in that location. This is crucial because Class II locations are defined by the presence of combustible dust that can create fire or explosion hazards if not properly contained. Ensuring that enclosures are dusttight minimizes the risk of dust ingress, which could potentially lead to dangerous conditions if a spark or heat source were to occur inside the enclosure.

Dusttight enclosures help maintain the safety of electrical and non-electrical equipment operating in these environments by preventing dust from accumulating, which could interfere with the equipment’s operation or create a fire hazard. The requirement for being “otherwise identified” allows for some flexibility in compliance, as long as the enclosure meets the safety needs of that specific location.

The other options do not align with the safety mandates specific to Class II, Division 2 locations, thus reinforcing the importance of using dusttight enclosures or those specifically recognized for safety in such environments.