cdcengineer
Sharp as a piece of beach glass
Here's a new one for me...
Strange new electrical installations are springing up here in Colorado. The legalization of medical marijuana facilities has ignited a market for electrical installations in these establishments. Most, if not all AHJ's/building dept's. are requiring electrical engineer's to stamp the designs. This is now the third design I will have done.
I was approached about a project where the owner wants to install a direct-ducted luminaire which is made by a specialty cultivation company. The luminaire is listed. And it appears the manufacturer intends for it to be installed with 8" duct connected to either end. However, I have never been asked if it was acceptable to install a light connected to a duct. In review of NEC articles 110, 300 & 410, I see only one real obstacle to their request - NEC 300.22(B).
According to the owner and mechanical engineer, this is a common installation practice. I have concerns about the possibility of the luminaire somehow energizing a semi-rigid duct, as there is no way to fasten an equipment ground between the luminaire and duct w/o opening up (and possibly losing the listing) and modifying the internals of the factory wiring.
Moral, political or personal opinions regarding this new industry aside, does anyone know if the IBC or mechanical codes might dis-allow such an installation. Or perhaps an NEC requirement which might either prove or dis-prove this type of installation method?
Thanks for the input
Strange new electrical installations are springing up here in Colorado. The legalization of medical marijuana facilities has ignited a market for electrical installations in these establishments. Most, if not all AHJ's/building dept's. are requiring electrical engineer's to stamp the designs. This is now the third design I will have done.
I was approached about a project where the owner wants to install a direct-ducted luminaire which is made by a specialty cultivation company. The luminaire is listed. And it appears the manufacturer intends for it to be installed with 8" duct connected to either end. However, I have never been asked if it was acceptable to install a light connected to a duct. In review of NEC articles 110, 300 & 410, I see only one real obstacle to their request - NEC 300.22(B).
According to the owner and mechanical engineer, this is a common installation practice. I have concerns about the possibility of the luminaire somehow energizing a semi-rigid duct, as there is no way to fasten an equipment ground between the luminaire and duct w/o opening up (and possibly losing the listing) and modifying the internals of the factory wiring.
Moral, political or personal opinions regarding this new industry aside, does anyone know if the IBC or mechanical codes might dis-allow such an installation. Or perhaps an NEC requirement which might either prove or dis-prove this type of installation method?
Thanks for the input