Code Quiz: RMC Threadless Couplings and Connectors

Oct. 23, 2014
NEC rules on installing listed threadless couplines and connectors on RMC when buried in concrete

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].

About the Author

Steven Owen

Voice your opinion!

To join the conversation, and become an exclusive member of EC&M, create an account today!

Sponsored Recommendations

Electrical Conduit Comparison Chart

CHAMPION FIBERGLASS electrical conduit is a lightweight, durable option that provides lasting savings when compared to other materials. Compare electrical conduit types including...

Don't Let Burn-Through Threaten Another Data Center or Utility Project

Get the No Burn-Through Elbow eGuide to learn many reasons why Champion Fiberglass elbows will enhance your data center and utility projects today.

Considerations for Direct Burial Conduit

Installation type plays a key role in the type of conduit selected for electrical systems in industrial construction projects. Above ground, below ground, direct buried, encased...

How to Calculate Labor Costs

Most important to accurately estimating labor costs is knowing the approximate hours required for project completion. Learn how to calculate electrical labor cost.