National Electrical Code Articles and Information

Code Quiz: Article 410, Part 4

Based on the 2017 NEC

Questions and answers written by Mark Lamendola, who has worked as a master electrician, electrical inspector, and design engineer. Mark is an IEEE Senior Member, and the Code article author for Codebookcity.com. Since 1996, he has been writing National Electrical Code articles for electrical trade magazines and has an extensive portfolio of hundreds of NEC articles.

Article 410 provides the requirements for luminaires, lampholders, and lamps.

1. You want to install luminaires outlet boxes; where do you find the provisions in the NEC?
   

2. If branch circuit wiring supplies power to luminaires connected together, can you pass it through a box that is an integral part of a luminaire?
   
3. If the luminaire canopy, lampholder, receptacle, or similar device does not cover the outlet box what must you do?
   
4. If an LED luminaire is supported independently of the outlet box, how must you connect it to the branch circuit?
   
5. What must you provide for an LED luminaire that is surface-mounted over a concealed outlet and designed to be supported solely by that outlet?

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