I agree with your mentioned reasons, but still have no idea why they allow flexible cord for "fixed luminaires" when cord is not generally allowed to be part of the permanent premises wiring. If part of listing of the luminaire I can accept that, which would mean the luminaire should come with a cord already attached or specify a particular optional cord set, but I could never otherwise figure out why it is allowed - even with the plug and receptacle.After more searching and reading I think I answered my own questions. NEC 410.62(C)(2)c requires this cord to have a plug. Also based on NEC 400.8 Uses Not Permitted - a cord is not to be used "as a replacement for permanent wiring". Hardwiring the cord to a box should be considered permanent wiring and should be done by an approved wiring method such as using type MC or others, there is no reason to use a cord.
Here are some possible safety reasons ...
-The cord and plug connection provided a disconnect means and allows for the entire fixture to be removed and repaired in a better controlled environment. The cord and plug can be inspected when the fixture is being repaired. If there was no plug the cord may never get inspected and there is a higher chance of working on the fixture energized.
-An approved wiring method such as type MC provides better conductor protection and can be secured to the structure unlike flexible cord.
Anyone agree or disagree?
Thanks
I agree with your mentioned reasons, but still have no idea why they allow flexible cord for "fixed luminaires" when cord is not generally allowed to be part of the permanent premises wiring. If part of listing of the luminaire I can accept that, which would mean the luminaire should come with a cord already attached or specify a particular optional cord set, but I could never otherwise figure out why it is allowed - even with the plug and receptacle.
Frequently interchanged? Maybe - but it is the cord and plug that makes them easy to do so. Many of those luminaires may be replaced with or without the cord and plug in a large facility and repairs are maybe done in the shop and the repaired luminaires end up replacing future failed luminaires. But is that the intent of "frequent interchanged" conditions that allow use of cord and plug connected equipment?
The term "electric discharge" also includes fluorescents and neon, but not induction, incandescent or LED.You guys realize that 410.62(C) only applies specifically to HID fixtures right?
The term "electric discharge" also includes fluorescents and neon, but not induction, incandescent or LED.
The term "electric discharge" also includes fluorescents and neon, but not induction, incandescent or LED.
2104 NEC, 410.62(C) "Electric-Discharge and LED luminaires" So this includes LED, HID, fluorescent, & neon
Haven't really dealt with many of the lights like in your first picture, but aren't you typically using cord and fittings that are part of the listing and accessories of the luminaire/system?Interesting, I can't wait to tell our customers all those cord connected linear lights must have a ceiling mounted receptacle and plug on the cord. This is going to have to be a pin and sleeve type in many applications with multiple circuits and neutrals
Haven't really dealt with many of the lights like in your first picture, but aren't you typically using cord and fittings that are part of the listing and accessories of the luminaire/system?
Some may say that is not above the fixture, I think it is close enough to be acceptable - but it is all in how you interpret it I guess.Here is an example of some of the installations I have seen problems with. I think this installation is a violation since the cords are strapped and the receptacles are not mounted above the fixtures. I also have seen similar installations where they did not use the plugs.
View attachment 15142
Here is an example of some of the installations I have seen problems with. I think this installation is a violation since the cords are strapped and the receptacles are not mounted above the fixtures. I also have seen similar installations where they did not use the plugs.
View attachment 15142
Are you seeing a safety issue or just a small code issue?
Some may say that is not above the fixture, I think it is close enough to be acceptable - but it is all in how you interpret it I guess.
I don't approve the strapping of the cord, and am pretty certain it must end in a plug/receptacle and not be hard wired into the junction box.
Other funny thing about it that is off topic some is they used vaportight luminaires, watertight cord connectors, but then supply it with AC/MC cable and dry location outlet box.