Concealed Plug-In Power Supply LV Lighting

[leboot]

Good day!

I'm an electrical engineer working on a project under construction where there is extensive custom casework with built in 24V LED lighting. The contractor is suggesting locating the plug in driver above the casework (trimmed out into an open air box that abuts the ceiling if you can picture it) that would be accessible only from adjacent accessible ceiling tiles.

The receptacle for the power supply/driver would be above the casework. There is a plug connected type C lamp cord that connects to the power supply/driver.

I originally told them that the power cord could not be concealed per NEC 400.8. They are pushing back. In reading NEC 411.6 (low voltage lighting section) I can see that Chapter 3 wiring methods and wiring supplied by a Class 2 power supply can be concealed. I'm not seeing anything about the input side of a Class 2 power supply.

What are your thoughts here?

Appreciate any input! Thank you!

 

[hbiss]

You can't have a receptacle above the ceiling so if you are saying that you are installing the receptacle in the ceiling tile above the casework you should be ok. I would think that the wiring, drivers, etc. then become part of the casework (furniture) and as long as the top where everything is is accessible by lifting adjacent ceiling tiles I don't see a problem.

-Hal

 

[readydave8]

I've heard that receptacle above ceiling ok if nothing plugged in to it?

 

[hbiss]

Yes, for temporary power or something like that. But you can't leave anything plugged into it.

-Hal