Q. What does the NEC allow when it comes to the connection of electric-discharge and LED luminaires?
A. Electric-discharge and LED luminaires supported independently of the outlet box must be connected to the branch circuit with a raceway, or with Types MC, AC, or NM cable [410.24(A)]. Electric-discharge luminaires can be cord-connected if the luminaires are provided with internal adjustments to position the lamp [410.62(B)]. Electric-discharge luminaires can be cord-connected if the cord is visible for its entire length and is plugged into a receptacle, and the installation complies with 410.62(C). When an electric-discharge or LED luminaire is surface mounted over a concealed outlet box, and not supported by the outlet box, the luminaire must be provided with suitable openings that permit access to the branch-circuit wiring within the outlet box [410.24(B)].
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.