junction box (outdoor)

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stev11

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Location
india
hi

I have NEMA 7 ex proof junction box CLASS 1 DIV. 1 ,But my question is , can use this box for outdoor use???
note: the classified area is C1D2 and there is a terminal inside this box only.

junction.jpg
 
rbalex

rbalex

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Location
Mission Viejo, CA
Occupation
Professional Electrical Engineer
Technically, if NEMA 7 is the only mark, no; it would need to be NEMA 8 to have an outdoor explosionproof rating. However, if it is marked NEMA 7 and one or more of the "outdoor" rated enclosures in Table 110.28 [2011 NEC] it would be acceptable.

With or without the terminal block, the enclosure does not need to be explosionproof.
 
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