Location Location Location

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The code book talks about different locations for installations. What are the different types and what do they mean?

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Damp location— an exterior or interior location that is normally or periodically subject to condensation
of moisture in, on, or adjacent to electrical equipment and includes partially protected locations under
canopies, marquees, roofed open porches, and similar locations.

Dry location — a location not normally subject to dampness, but that may include a location subject to
temporary dampness as in the case of a building under construction, provided that ventilation is adequate
to prevent an accumulation of moisture.

Hazardous location (see Appendix B) — premises, buildings, or parts thereof in which
(a) an explosive gas atmosphere is present, or may be present, in the air in quantities that require special
precautions for the construction, installation, and use of electrical equipment;
(b) combustible dusts are present, or may be present, in the form of clouds or layers in quantities to require
special precautions for the construction, installation, and operation of electrical equipment; or
(c) combustible fibres or flyings are manufactured, handled or stored in a manner that will require special
precautions for the construction, installation, and operation of electrical equipment.

Ordinary location — a dry location in which, at normal atmospheric pressure and under normal conditions
or use, electrical equipment is not unduly exposed to damage from mechanical causes, excessive dust,
moisture or extreme temperatures, and in which electrical equipment is entirely free from the possibility of
damage through corrosive, flammable, or explosive atmospheres.

Outdoor location— any location exposed to the weather (see Appendix B).

Wet location — a location in which liquids may drip, splash, or flow on or against electrical equipment.

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see section 26 and 28

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