JDBrown
Senior Member
- Location
- California
- Occupation
- Electrical Engineer
This morning I received a lighting plan from an Architect. It shows several LED fixtures (or luminaires, if you prefer) supplied by remote power supplies. When I looked up the power supplies, I discovered that they are UL Recognized, not UL Listed. I've run into this issue before, but I'm sure that I completely grasp what's going on.
As I understand it, the power supply would need to be UL Listed in order for the Electrician to be able to install it in the field, while a UL Recognized power supply would have to be put into some type of Listed assembly by a "UL Shop" in order to be acceptable. Is that correct? If not, what is the difference between UL Listed and UL Recognized?
Other questions:
What is a "UL Shop"? I've seen that term on these forums several times, but I'm still not quite clear on what it means.
Does the LED assembly need to be UL Listed as well, or just the power supply?
As I understand it, the power supply would need to be UL Listed in order for the Electrician to be able to install it in the field, while a UL Recognized power supply would have to be put into some type of Listed assembly by a "UL Shop" in order to be acceptable. Is that correct? If not, what is the difference between UL Listed and UL Recognized?
Other questions:
What is a "UL Shop"? I've seen that term on these forums several times, but I'm still not quite clear on what it means.
Does the LED assembly need to be UL Listed as well, or just the power supply?