petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
It's not hard to get them certified when you are building a lot of them, it's when you're building one offs that it could get expensive.
I'm sure though if you built them to some UL standard that you could list them as a control panel instead of having to have each part UL listed.
I am not entirely sure what you are saying.
UL has several listing programs for items that are commonly made as one ups including signs, industrial control panels, and control panels for hazardous areas (I think there are more, but these are the ones I can think of off hand).
My understanding is that just about any assembly can be listed under UL508a if it has wires and does not fall within the boundries of one of the other classifications. IOW, you can't list a sign under UL508a. You can't list a control panel as a sign.
However, you could potentially list an entire machine as a control panel, as long as it does not fit into one of their other classifications.