Questions tagged [ul]

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4
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2answers
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What surface temperature (rise) is required to (dis)qualify a combustion appliance from obtaining a “zero clearance to combustibles” rating?

How far must the surface temperature of a UL-listed combustion appliance rise to prohibit the manufacturer from specifying it for a zero clearance to combustibles installation? (I looked in UL 127 ...
5
votes
1answer
485 views

What is the difference between being UL recognized and being UL listed?

A product can be UL recognized or UL listed. I understand that there is some difference between these two things, but I have never had a full and clear explanation of the difference. What is, in fact, ...