Raceways on exteriors of buildings or other structures shall be arranged to drain and shall be _____ for use in wet locations.

• A. rated
• B. listed and labeled
• C. tested
• D. installed

Answer: (B)

The key idea is that outdoor raceways must be prepared for wet environments and use components that are specifically approved for such conditions. Arranging raceways to drain prevents water from collecting inside them, which guards against moisture-related issues like corrosion, insulation damage, or electrical faults. Beyond drainage, the equipment and fittings used outdoors must be “listed and labeled” for wet locations. Listing and labeling come from evaluation by a recognized testing laboratory, confirming that the materials, construction, and insulation are suitable for wet locations and that the labeling communicates that suitability. This dual requirement ensures the entire installation is proven to withstand exposure to moisture.

Using only something that’s merely rated or merely tested doesn’t guarantee that the assembly has been evaluated and approved for wet locations, and installation alone doesn’t address the environmental compatibility. So the best choice is components that are listed and labeled for use in wet locations.