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What is meant by NEMA 7 enclosures?

April 26, 2017enclosures meant nema

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What is meant by NEMA 7 enclosures?

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NEMA 7 generally means explosion proof. The enclosure is intended for indoor use in locations classified as Class I, Division I, Groups A, B, C, or D as defined in the National Electrical Code. It is designed to contain an internal explosion without causing an external hazard when installed in the intended atmospheres and locations. Valvcon enclosures are designed to meet Groups C and D only. CAUTION: There are various subsets of NEMA 7 (classes, divisions and groups). NEMA 7 ratings are for certain subsets, so you must know your customer’s requirements before you can sell a NEMA 7 actuator!