Electric Classifications

Non-Classified Location Enclosures
Type 1 Enclosures:  intended for indoor use primarily to provide a degree of protection against limited amounts of falling dirt in locations where unusual service conditions do not exist.

Type 4 Enclosures: intended for indoor or outdoor use primarily  to provide a degree of protection against windblown dust and rain, splashing water, and hose-directed water; and to be undamaged by the formation of ice on the enclosure.

Type 4X Enclosures:intended for indoor or outdoor use primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water, and hose-directed water; and to be undamaged by the formation of ice on the enclosure.

Type 12 Enclosures: intended for indoor use primarily to provide a degree of protection against circulating dust, falling dirt, and dripping noncorrosive liquids.

Classified Location Enclosures:

Type 7 Enclosures:  intended for indoor use in locations classified as Class I, Groups A, B, C, or D as defined in the National Electric Code.

Type 9 Enclosures : intended for indoor use in locations classified as Class II, Groups E, F, and G as defined in the National Electric Code.

Type 10 Enclosures : capable of meeting the requirements of the Mine Safety and Health Administration, 30 C.F.R., Part 18.