Code Q&A: Cable Tray, Defined

July 24, 2019

Test your NEC knowledge.

Ecmweb Com Sites Ecmweb com Files 392 2 01

Q. How does the NEC define a cable tray system?

See the answer below.

A. A cable tray system is a unit or assembly of units or sections with associated fittings forming a rigid structural system used to securely fasten or support cables, raceways, and boxes [Sec. 392.2]. Cable tray isn’t a type of raceway. It’s a support system for cables and raceways.

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About the Author

Mike Holt

Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), one of the largest electrical publishers in the United States. He earned a master's degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to produce seminars, videos, books, and online training for the trade as well as contribute monthly Code content to EC&M magazine.