Threadless couplings approved for use with IMC in wet locations shall be which of the following?

Threadless couplings approved for use with IMC in wet locations shall be which of the following?

• A. listed for wet locations
• B. rated for wet locations
• C. suitable for wet locations
• D. not approved for wet locations

Answer: (A)

The essential point is that equipment installed in wet locations must be evaluated and approved by a recognized testing laboratory and carry a listing for wet locations. When a threadless coupling is approved for use with IMC in wet locations, the formal criterion is that it is listed for wet locations. Listing shows the product has been tested and deemed suitable for moisture exposure, which is the NEC’s required assurance for use in wet environments. Using a rating for wet locations isn’t the established designation the code relies on, and “suitable for wet locations” is too vague without a formal listing. Saying “not approved for wet locations” would contradict the requirement entirely.

The essential point is that equipment installed in wet locations must be evaluated and approved by a recognized testing laboratory and carry a listing for wet locations. When a threadless coupling is approved for use with IMC in wet locations, the formal criterion is that it is listed for wet locations. Listing shows the product has been tested and deemed suitable for moisture exposure, which is the NEC’s required assurance for use in wet environments.

Using a rating for wet locations isn’t the established designation the code relies on, and “suitable for wet locations” is too vague without a formal listing. Saying “not approved for wet locations” would contradict the requirement entirely.