Which exterior outlet cover is required by NEC?
NEC 2008
406.8 Receptacles in Damp or Wet Locations.
(A) Damp Locations. ... A receptacle shall be
considered to be in a location protected from the weather where
located under roofed open porches, canopies, marquees, and the like,
and will not be subjected to a beating rain or water runoff. All 15-
and 20-ampere, 125- and 250-volt nonlocking receptacles shall be a
listed weather-resistant type.
NEC 2008
Article 100 Definitions
Location, Damp. Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate
degrees of moisture. Examples of such locations include partially
protected locations under canopies, marquees, roofed open porches, and
like locations, and interior locations subject to moderate degrees of
moisture, such as some basements, some barns, and some coldstorage
warehouses.
Location, Dry. A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to
dampness or wetness, as in the case of a building under construction.
Location, Wet. Installations underground or in concrete slabs or masonry in direct contact with the earth; in locations subject to
saturation with water or other liquids, such as vehicle washing areas;
and in unprotected locations exposed to weather.