General Purpose (Type 1).
- A general purpose enclosure is primarily intended to prevent accidental contact with the enclosed apparatus. It is suitable for indoor applications where it is not exposed to unusual service conditions.
Weather proof (Type 3).
- A weatherproof enclosure is intended to provide suitable protection against specified weather hazards. It is suitable for outdoor use.
Watertight (Type 4).
- A watertight enclosure is designed to exclude water applied in the form of a hose stream. It is suitable for application where the apparatus may be subjected to a stream of water during cleaning operations.
Watertight-Corrosion Resistant (Type 4X).
- A watertight-corrosion resistant enclosure is intended for indoor and outdoor use to provide protection against corrosion, windblown dust and rain, splashing water, and hose directed water.
Hazardous Locations, Class I (Type 7).
These enclosures are designed to meet the application requirements of the National Electrical Codeã
for Class I Hazardous Locations. The type designation is incomplete without a suffix letter or letters (A, B, C, or D) which indicates the particular group or groups of hazardous locations (as defined in the NECã
) for which the enclosure is designed.
Hazardous Locations, Class II (Type 9).
These enclosures are designed to meet the application requirements of the National Electrical Codeã
for Class II Hazardous Locations. The type designation is incomplete without a suffix letter or letters (E or G) which indicates the particular group or groups of hazardous locations (as defined in the NECã
) for which the enclosure is designed.
Industrial Use (Type 12).
- An industrial use enclosure is designed for use in those applications where it is desired to exclude such materials as dust, lint, fibers, and oil or coolant seepage.
Dust-Proof (Type 13).
- A dust-proof enclosure is primarily intended to prevent accidental contact with the enclosed apparatus and, in addition, is so constructed that dust which may enter will not interfere with the operation of the apparatus. The construction of the enclosure can only be defined in relation to the apparatus and to the amount and kind of dust present.
E.1.2 Acceptable Raceway Types.
- See National Electrical Codeã
for definitions.
- Rigid metal conduit
- Rigid nonmetal conduit
- Electrical metallic tubing
- Liquid-tight flexible metal conduit
- Liquid-tight flexible nonmetal conduit
Note:
- Flexible metal conduit and flexible metallic tubing without nonmetallic jacket shall not be used.
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