Edwards Signaling Catalog

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TM www.edwardssignaling.com 13
TM NEMA Enclosure Ratings NEMA Definitions A brief description of the more common types of enclosures used by the electrical industry relating to their environmental capabilities follows. Please refer to the appropriate sections of the latest revision of NEMA Standards Publication No. 250 for complete information regarding applications, features and design tests. Definitions Pertaining to Non-hazardous Locations Type 1 Enclosures Intended for use primarily to provide a degree of protection against limited amounts of falling dirt. Type 3 Enclosures Intended for outdoor use primarily to provide a degree of protection against rain, sleet, windblown dust, and damage from external ice formation. Type 3R Enclosures Intended for outdoor use primarily to provide a degree of protection against rain, sleet, and damage from external ice formation. Type 3S Enclosures Intended for outdoor use primarily to provide a degree of protection against rain, sleet, windblown dust, and to provide for operation of external mechanisms when ice laden. Type 4 Enclosures Intended for indoor or outdoor use primarily to provide a degree of protection against windblown dust and rain, splashing water, hose-directed water, and damage from external ice formation. Type 4X Enclosures Intended for indoor or outdoor use primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water, hose-directed water, and damage from ice formation. Type 6 Enclosures Intended for indoor or outdoor use primarily to provide a degree of protection against hose-directed water, the entry of water during occasional temporary submersion at a limited depth, and damage from external ice formation. Type 6P Enclosures Intended for indoor or outdoor use primarily to provide a degree of protection against hose-directed water, the entry of water during prolonged submersion at a limited depth, and damage from external ice formation. Type 12 Enclosures Intended for indoor use primarily to provide a degree of protection against circulating dust, falling dirt, and dripping non-corrosive liquids. Type 12K Enclosures Type 12 with knockouts. Definitions Pertaining to Hazardous (Classified) Locations Type 7 Enclosures Intended for indoor use in locations classified as Class I, Groups A, B, C, or D, as defined in the National Electrical Code. Type 8 Enclosures Intended for indoor or outdoor use in locations classified as Class I, Groups A, B, C, or D, as defined in the National Electrical Code. Type 9 Enclosures Intended for indoor use in locations classified as Class II, Groups E, F, or G, as defined in the National Electrical Code. Type 10 Enclosures Constructed to meet the applicable requirements of the Mine Safety and Health Administration. 14 www.edwardssignaling.com
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Page 17 and 18: TM Hazardous Location and Explosion
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Page 35 and 36: TM Product Index 1 VISUAL SIGNALS W
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Page 41 and 42: TM 1 VISUAL SIGNALS StackLight 200
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