Lighting Dry-Damp-Wet UL Ratings
|UL Ratings...What It All Means|
Light Fixture Ratings for Dry, Damp, and Wet Locations
Light fixtures and fans indicated "Suitable for Damp Locations" or "Suitable for Wet Locations" can be installed and utilized in a damp location. A damp location is typically an exterior or in some cases an interior location which is periodically subject to condensation or moisture. Damp rated light fixtures may have most of the wiring encased within the metal components of the fixture design but with a portion of the wiring exposed. An example of this would be a chain hung pendant with the wiring running through the chain links into the canopy and electrical box. Or in the case of a wall mount fixture, there may be a small portion of the wiring that is exposed from the hanger to the actual lantern.
A typical damp location can include bathrooms, indoor pool areas, utility rooms, or covered porch or patio.
Many of our customers select to install damp rated light fixtures in exterior locations covered by a very large overhang.
However, the height of the light fixture installation location is very important in this instance. The very bottom of the light fixture should be at or above a 45 degree angle drawn from the edge of the overhang (see diagram below). The light fixture should be fully protected from water, particularly from storms.
Wet Rated (UL listed for Wet Locations)
Light fixtures and fans indicated as "Suitable for Wet Locations" should be installed and used in a wet location (indoors or outdoors). A wet location can be an indoor or exterior location in which water or other liquids may drip, splash or flow onto the electrical components of the lighting or fan. Wet rated light fixtures will typically have all wiring encased within the metal components of the fixture design.
A typical wet location can include open decks, stairwells, patios, uncovered porches, exterior walls, gazebos, pergolas, and walkways. Common light fixtures for a wet location are column mount fixtures, post mount fixtures, bollards, wall mount fixtures, deck fixtures, and line voltage landscape lighting.