Class II Div 2

[gadfly56]

Are there any practical differences between the wiring methods used for Class I Div 2 and Class II Div 2? What about receptacles and equipment? I have a nutraceutical operation trying to close out a fire alarm permit (not ours) and it looks like the room is, per the drawings, Class II Div 2. The fire alarm equipment is definitely not rated. I can put in some dual listed equipment, but was hoping to get guidance on some path closer to Class II.

 

[rbalex]

Class II enclosures can realistically block the entrance of dust while Class I explosionproof don't even try. Dusttight is usually sufficient in Class II, Division 2.