There are two options for certifying engine generator enclosures. In the first option, the generator enclosure or weather housing alone ...
UL has several tools available to de-mystify hazardous locations. UL has been certifying hazardous location equipment for over 100 years, ...
I have used UL Product Spec and find it extremely useful. Are there any online tutorials available so that I ...
If a UL Listed (Certified) product is rebuilt, reconditioned, refurbished or remanufactured, does the original Listing (certification) mark on the ...
Question I’ve heard GFCIs are now required to have a self-test feature. What is the new GFCIs self-test feature all ...
The 2014 NEC 690.12 requires rapid shutdown of photovoltaic (PV) systems on buildings and that equipment that performs the rapid ...
Question I seem to recall that UL does not certify (List) power distribution blocks for use on the line side ...
Question If I have an installation that is 120 V or 208V and use a reducing washer in a concentric ...
I have heard UL has a new web-based compliance tool similar to the UL White Book, can you tell me ...
Does UL have a version of the Code Correlation Database that is optimized for a smart phone? Yes. UL has redesigned ...