NEMA FAQs: Enclosures
NEMA is a Standards Development Organization (SDO), but is not a testing laboratory or a Certification Body (CB). Therefore, NEMA neither ... 3SX, 4, 4X, 5, 12, 12K and 13, ANSI/NEMA 250 also covers the requirements for Type 7 and 9 enclosure ratings for hazardous (classified) locations.
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