Insulated conductors used in wet locations shall be which of the following?

• A. Listed
• B. Rated
• C. Suitable
• D. Any of these

Answer: (D)

In wet locations, conductors must have insulation that is approved for moisture exposure. The NEC requires insulation to be listed or identified as suitable for wet locations. That approval can come in several forms: the product can be listed by a recognized testing laboratory, rated for wet locations, or explicitly identified as suitable for wet locations by the manufacturer. Because any of these forms of approval indicate the conductor is appropriate for wet environments, the correct choice is that any of these indications is acceptable.