Code Quiz

Sept. 22, 2011
Which one of the following electrical ducts is suitable for an underground installation or embedded in concrete?

Which one of the following electrical ducts is suitable for an underground installation or embedded in concrete?

  1. Rigid metal conduit (RMC)
  2. Intermediate metal conduit (IMC)
  3. Rigid PVC conduit
  4. Other raceways round in cross section and suitable for use underground or embedded in concrete
  5. All of the above

Answer: E

The 2011 NEC includes a new definition for "electrical duct." As noted in 310.2, electrical duct is defined as "Electrical conduits, or other raceways round in cross section, that are suitable for use underground or embedded in concrete."

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...

Fiberglass Electrical Conduit Chemical Resistance Chart

This information is provided solely as a guide since it is impossible to anticipate all individual site conditions. For specific applications which are not covered in this guide...

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.