Plastic switch box listed for ceiling light?

[Sierrasparky]

Hey are regular NM polastic boxes rated for ceiling fixures B18 B20 .... not the round ones.

 

[augie47]

Ceiling fixtures, no.
Wall fixtures, depends on weight.
See 314.27

 

[stickboy1375]

 

[Ponchik]

What if the fixture is independently supported by a structure member? Can a device box still be used?

 

[Sierrasparky]

The reason I ask as I have done some fixture R&R in several recently built condos have ceiling mounted boxes with pendants and other light fixtures mounted on them. I get pissed off because the hardware with the fixtures are incompatible. I have to go back down to the truck and find parts.
pain in the behind.

 

[John120/240]

What if the fixture is independently supported by a structure member? Can a device box still be used?

If the fixture is supported independlty of the box, I see no problem. The box is just an

enclousure to contain the wire nut connections.

 

[Sierrasparky]

These were not. They were pendants.