Code Quiz

May 9, 2005
Is it permissible for a qualified person who services and maintains the facility to "peel out" a power cable from a cable tray and run it down the inside portion of an H beam to a piece equipment? The cable is properly supported as it runs down the ...

Is it permissible for a qualified person who services and maintains the facility to "peel out" a power cable from a cable tray and run it down the inside portion of an H beam to a piece equipment? The cable is properly supported as it runs down the column to the equipment, and it's protected by the inside portion of the H beam. Keep in mind that although the cable is unsupported for 5 feet at both ends of the installation, it's properly supported.

A) Yes, but only if the power cable is installed in RMC
B) Yes, if the power cable is TC-ER rated, properly protected from physical damage, and meets all of the requirements of 336.10(7)
C) Yes, but only if the cable is installed in a channel or tray
D) Either A or C

Answer: B)

Per a 2005 change, 336.10(7) was revised to allow the installation of TC-ER rated cable when meeting all of the requirements of this section.

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.