Code Q&A

Aug. 4, 2011
Q. Is it acceptable to install communication cable in the same lighting pole that is being used as a raceway for lighting conductors?

Q. Is it acceptable to install communication cable in the same lighting pole that is being used as a raceway for lighting conductors?

A. Only if there is a barrier or listed divider between the communication cable and the power conductors. Communications conductors must not be placed in any raceway, compartment, outlet box, junction box, or similar fitting with conductors of electric light, power, or Class 1 circuits [800.133(A)(1)(d)].

Ex 1: Communications circuits can be within the same enclosure with conductors of electric light, power, and Class 1 circuits, where separated by a permanent barrier or listed divider.

Separation is required to prevent a fire or shock hazard that can occur from a short between the communications circuits and the higher-voltage circuits.

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.

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