Code Quiz of Day

Cable Tray System Uses Not Permitted

Feb. 10, 2015

Article 392 covers cable tray systems, including ladder, ventilated trough, ventilated channel, solid bottom, and other similar structures.

Mike Holt

Cable tray systems shall not be used ______.

a) in hoistways
b) where subject to severe physical damage
c) in hazardous (classified) locations
d) a or b

See answer and applicable Code reference

The correct answer is: d) a or b

Article 392 covers cable tray systems, including ladder, ventilated trough, ventilated channel, solid bottom, and other similar structures. As noted in Sec. 392.12, "Cable tray systems shall not be used in hoistways or where subject to sever physical damage."

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.