Henry Neill
Member
- Location
- New Orleans, LA
First off, sorry if this is in the wrong place. I'm new here but I feel like what I'm dealing with is definitely a safety concern. Anyhow, here we go:
We're currently developing a fixture that weighs roughly 85 pounds.
NEC 314.27(B) states that a luminaire that weighs more than 50 pounds shall be supported independently of the outlet box unless the box is listed for the weight to be supported. I'd rather not count on the box being rated because this needs to be repeatable and adaptable and buildings vary and customers are finicky.
UL 1598 5.11.1 states that a luminaire shall have means for mounting, and if special hardware is required, the hardware shall be provided and shall comply with the loading test of 16.15
This fixture, like all of ours, will be ETL listed so both of those apply to me. The big issue is that the chandelier industry is completely stuck in the past when it comes to parts, there's no such thing as "chandelier" parts, just lamp parts, and those are all still using the IPS fittings leftover from when everything ran on gas because everyone wanted their gas fixtures electrified. Usually our fixtures hang from a bracket attached across the box in the ceiling with a 1/4 IPS pipe attached to a screw collar. They're also usually less than 50 pounds; aye, there's the rub. I'm trying to find some sort of adapter or something to couple IPS threads to anything of a similar diameter but "standard" enough that I can find some nuts that are beefier than the slim little locknuts lamp part suppliers seem to stop at. Or alternatively if anyone can just point me in the direction of hefty nuts for IPS threaded nipples that'd be just as good.
And of course, any better ideas are more than welcome.
Thanks for the help, I've already had so many questions answered just searching around this forum...
We're currently developing a fixture that weighs roughly 85 pounds.
NEC 314.27(B) states that a luminaire that weighs more than 50 pounds shall be supported independently of the outlet box unless the box is listed for the weight to be supported. I'd rather not count on the box being rated because this needs to be repeatable and adaptable and buildings vary and customers are finicky.
UL 1598 5.11.1 states that a luminaire shall have means for mounting, and if special hardware is required, the hardware shall be provided and shall comply with the loading test of 16.15
This fixture, like all of ours, will be ETL listed so both of those apply to me. The big issue is that the chandelier industry is completely stuck in the past when it comes to parts, there's no such thing as "chandelier" parts, just lamp parts, and those are all still using the IPS fittings leftover from when everything ran on gas because everyone wanted their gas fixtures electrified. Usually our fixtures hang from a bracket attached across the box in the ceiling with a 1/4 IPS pipe attached to a screw collar. They're also usually less than 50 pounds; aye, there's the rub. I'm trying to find some sort of adapter or something to couple IPS threads to anything of a similar diameter but "standard" enough that I can find some nuts that are beefier than the slim little locknuts lamp part suppliers seem to stop at. Or alternatively if anyone can just point me in the direction of hefty nuts for IPS threaded nipples that'd be just as good.
And of course, any better ideas are more than welcome.
Thanks for the help, I've already had so many questions answered just searching around this forum...
