Code Quiz: RMC Threadless Couplings and Connectors

NEC rules on installing listed threadless couplines and connectors on RMC when buried in concrete

Oct. 23, 2014

Fill in the blank with the appropriate answer.

When installing listed threadless couplings and connectors on rigid metal conduit (RMC), where buried in concrete or masonry, the couplings and connectors shall be ______.

A. weather-proof.

B. weather-resistant.

C. judged suitable for the condition of use.

D. of the concrete tight type.

Find the Answer

Answer: D

Article 344 covers the use, installation, and construction specifications for rigid metal conduit (RMC) and associated fittings. As noted in Sec. 344.42(A), the couplings and connectors shall be of a concrete tight type.

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at [email protected].