Supporting Ceiling Light Fixtures From The Device Boxes
February 27, 2006
Q: Does the NEC allow you to support ceiling mounted lighting fixtures from the device box?
A: Yes, you are allowed to support ceiling mounted lighting fixtures from the device box, under some conditions. Part (A) of 410.16 allows outlet boxes or fittings installed as required by 314.23 to support lighting fixtures.
310.23(B)(1) allows nails and screws to support outlet boxes provided that the fasteners pass through the interior of the box within one-quarter of an inch of the back or ends of the box. Most device boxes may be purchased with nails already in place, ready to be installed.
There is also a requirement in 314.27 that says boxes for support of lighting fixtures must be designed for the purpose.
The device box must be designed or installed so that a light fixture may be attached. An exception to this rule allows boxes or plaster rings to support wall mounted light fixtures that do not weigh more than 6 pounds to be secured to the box with no less than two No. 6 or larger screws.
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