When installing outlet boxes designed for the support of luminaires, what are the specifics when the luminaire weighs more than 50 lb?

  1. The luminaire shall be supported independently of the outlet box.
  2. The outlet box shall be listed for the application and marked for the maximum weight permitted.
  3. Both (a) and (b) are permitted
  4. No fewer than four No. 8 screws may be used to support any luminaire.

Answer: C

According to 314.27(B), you have two choices when faced with this situation.

  1. The luminaire shall be supported independently of the outlet box, or
  2. The outlet box shall be listed for the application and marked for the maximum weight permitted.
Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.