- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
My inspector didn't have a problem with it.I guess that some tiles are more robust than others so some may not sag. I'm wondering if using them that way is code complaint.
My inspector didn't have a problem with it.I guess that some tiles are more robust than others so some may not sag. I'm wondering if using them that way is code complaint.
Those fixtures were evaluated and listed by CSA in Canada,Listing mistake? If it complies with applicable listing standard for that equipment there is no mistake,
1598 said:11.3.2 The wiring compartment (junction box) where the branch circuit connections to the luminaire are
made shall be integral to the luminaire or securely fastened to its enclosure or frame.
That is a listed product.. case closed with that home inspector Inspector!
Often either code or listing eventually changes so they are no longer conflicting. But at same time we have 110.3(B) telling us to follow listings.So that leads me to ponder the road were heading down here;
In general if a conflict exists between a listed product and the NEC, who yields the lane? The listed product or the NEC?
On this one I doubt Article 410 and 314 will ever change allow a junction box just to float in a ceiling.Often either code or listing eventually changes so they are no longer conflicting. But at same time we have 110.3(B) telling us to follow listings.
Requires the product standards to follow and yield to the code for products to be considered approved by an AHJ.(A) Examination. In judging equipment, considerations such
as the following shall be evaluated:
(1) Suitability for installation and use in conformity with the
provisions of this Code
110.3(A)(1) does give the AHJ some discretion in what they will approve. Most will generally accept listings and instructions that come with those listings, and only turn to their own evaluation when there is no listing or other standards they can find to apply. And AHJ often is the City or State department and not an individual inspector, though there may be many individual inspectors that think they can make any decision they want to.On this one I doubt Article 410 and 314 will ever change allow a junction box just to float in a ceiling.
Lots of questionable stuff is listed, Federal Pacific Breakers are listed.
and anyone can call themselves a 'product evaluation company'.
The thing is Annex 'A' is not even an enforceable part of the code, its up to each AHJ to decide what they consider listed.
I'd say 110.3 (A)(1)
Requires the product standards to follow and yield to the code for products to be considered approved by an AHJ.
Edit time ran out was trying to add this:110.3(A)(1) does give the AHJ some discretion in what they will approve. Most will generally accept listings and instructions that come with those listings, and only turn to their own evaluation when there is no listing or other standards they can find to apply. And AHJ often is the City or State department and not an individual inspector, though there may be many individual inspectors that think they can make any decision they want to.
If each individual inspector could make such decisions at will, there would be no reason to have code book as every inspector would have his own rules. We still get a little bit of each one having their own rule as it is, and many just do what they are asked because they either don't want any trouble or figure it will get the inspection over faster so they can move on.
Inspectors are human and humans make mistakes. Just my opinion here but no inspector should make the rules on his own, he can enforce what is in the code plus any amendments his employer has placed into law. Anything questionable he has authority to make decisions on behalf of his employer (who is the AHJ) those decisions can be appealed and possibly changed. Many times an explanation of why he made a decision can result in agreement with installer. Sometimes inspector may not be familiar enough with the type of situation at hand and maybe needs to confer with his supervisor or other colleagues before making a decision. Those that don't know their stuff in a particular situation are not being professional if they make a decision on ignorance instead of at least talking to supervisor or doing some research before making such decision. But some like the position of power and figure they can do whatever they want.
I've mostly had those that will look up something if I don't agree with them. They would have to look it up anyway if they were to write a correction notice as they would need to cite the code section that is in violation.I have officially challenged inspectors' fails four times over the years, each time politely and respectfully, with full cooperation of each one, and "won" every time. They didn't seem to mind that their bosses agreed with my reasoning, like it let them off the hook.
The most recent one was where I used SE instead of SER as part of a 200-to-320/400 upgrade to feed a new sub-panel for a tankless water heater. The inspector was flummoxed by my assertion that no neutral was required because the water heater needed none.
There are product standards out there for Europe, Asia and other places that are incompatible with the NEC, you just might not run into it.To reject something that is listed if installed in accordance with listing is just wrong.
Non US listing standards often don't fly with AHJ's.The NEC states the junction boxes need to be secured, a listing cant over rule that.
All good information however there is nothing in the NEC that dictates which listing standards must be used, it within the AHJs rights to choose which product certifications it accepts.
And in making that decision NEC 110.3(A)(1) offers the AHJ guidance.
There are product standards out there for Europe, Asia and other places that are incompatible with the NEC, you just might not run into it.
The most memorable one was when we installed really cool listed labeled ovens from Germany that got delivered to a fancy bakery (25k freight bill), AHJ turned them down.
Did not approve of the listing, the correction memo referenced 110.3(A)(1).
It took me days and a (German translator) to bring the fancy bakery ovens up to *the* listed standard the AHJ accepted.
That whole thing caused a real headache for me once. I inquired about it as it involved a large retrofit project.Take a look at the lighting wall switch controls that more recently were a little bit of a battle between NEC and listings - NEC basically never allowed using EGC as a circuit conductor even if it was under a milliamp, yet they were listed that way and commonly accepted by inspectors.
Wow that would be interesting to see.We did a mega mansion in Albany, Ga, 480 three phase service with transformers in a closet on each floor. We trimmed out all of the lights, passed inspection, then they had someone come back through, and changed them out to chandeliers from France that were not UL listed.
The AHJ wouldn’t, that’s why they did it after the final.That whole thing caused a real headache for me once. I inquired about it as it involved a large retrofit project.
The manufacturer said:
'While the 2011 edition of the National Electric Code requires a grounded circuit conductor at all
switch locations, it does not disallow the use of a lighting control device that instead uses the
equipment grounding conductor for standby current, as allowed in UL773A.'
The best I could come up with is 250.24(A)(5).
The code is clear as mud on that one.
In this case:
- The code clearly requires luminaire (and by definition its junction box) to be securely fastened.
- The code requires junction boxes to be securely fastened.
- The UL standard itself requires the luminaire junction box to be securely fastened.
Wow that would be interesting to see.
The lights were probably listed and labeled to another standard, you probably could have asked your AHJ and seen if they would accept that standard.
There is nothing in the NEC itself that prevents you from using IEC (Euro) or any other standards.
I can see it now, inspector is looking at this mansion with most everything top end, yet some rooms where you maybe see huge expensive chandelier they just put in a $2.00 keyless porcelain. When inspector asks about that, installer just says, their budget got cut close to the end of projectWe did a mega mansion in Albany, Ga, 480 three phase service with transformers in a closet on each floor. We trimmed out all of the lights, passed inspection, then they had someone come back through, and changed them out to chandeliers from France that were not UL listed.
Its not old yet, this topic made it to the agenda of our states electrical board meeting a few days ago, and CSA is looking into the 'typeo' in the installation instructions.Sorry to resurrect an old thread,
Thank you for seeing my bigger philosophical question of the NEC vs product standards.but I wanted to chime in on the debate on if a listing or the NEC takes precedence. I am not an electrician, but am a design engineer that makes product to UL1598. The NEC (and any local code) absolutely wins over the product listing. If the installation instructions say you don't have to mount the juction box but the NEC or local code does, then you mount the box.
UL1598 also references many other standards for materials and components that are used to test and evaluate a product. Many times there are conflicts in requirements. The rule has always been the standard closest to the AHJ takes precedence. Its not great, but there have been cases where listed products do not comply with code. Most installation instructions have a general statement saying the product must be installed per the NEC and local codes by a qualified electrician.
I have officially challenged inspectors' fails four times over the years, each time politely and respectfully, with full cooperation of each one, and "won" every time. They didn't seem to mind that their bosses agreed with my reasoning, like it let them off the hook.
The most recent one was where I used SE instead of SER as part of a 200-to-320/400 upgrade to feed a new sub-panel for a tankless water heater. The inspector was flummoxed by my assertion that no neutral was required because the water heater needed none.