Does a Custom 5V WS2812 LED Glass Fixture Require Full UL Listing for Inspection?

Hi All,

I recently finished a large custom glass interior stairwell lighting installation where I created a series of double walled glass tubes holding LED RGB strip lights (5v WS2812 strips) wrapped around an isolated interior core with all connections soldered and each line on separate in-line fuses.

Before getting my final payment I was just asked about UL Listing, and all I could answer is that my components are UL listed. I power these off of a (UL Listed) grounded Meanwell 5v 100A power supply - the entire fixture on full bright draws less than 50 watts - and plugs into a ceiling outlet via a standard plug. 

Is there any separate listing/code issues because this is a 5v system, or could the inspector insist the entire installation be UL listed? I've done two large commercial installations using these same components before this one and this has never come up before.

Thanks!

You can use an LM35 or a thermistor to get a reasonably accurate temperature measurement. There are more accurate sensors like platinum RTDs if you need better than 1 or 2 degree C accuracy.

I seriously doubt there is any way to measure pack temperature using current or internal resistance. For any method you choose, I suspect there will be cell failure modes that are indistinguishable from normal charging.

Most commercial packs uses thermistors as high accuracy is not needed to adjust charge current/voltage and detect catastrophic failure.

Or else you can go with the consultation of professional to get your problem solved easily.