Question I have an old panelboard made by a company that was sold and no longer produces panelboards or circuit ...
Question I have noticed that arc-fault circuit-interrupter (AFCI) circuit breakers tend to be warmer to the touch than regular circuit ...
Question I understand UL conducted research on old homes to determine the effects of aging on residential electrical wiring systems. ...
Question What types of emergency lighting are listed by UL under the product category Emergency Lighting and Power Equipment (FTBR)? ...
Question Frequently, we are finding that more manufacturers are making field modifications to their equipment after it leaves the factory. ...
Question Can the wiring of normal and emergency power circuits be intermixed in luminaires? I have an installation of a ...
Question: Power Pedestals Listings for Various Locations What is the difference between power pedestals Listed for RV parks, mobile homes, ...
Question Can Power Outlet Listed for Temporary Location be used in Permanent One? Can a power outlet Listed as suitable ...
UL has developed a classification program for wind turbines and wind turbine related equipment. The program is based on requirements ...
Question: Grounding permanently mounted portable luminaires Are permanently mounted portable luminaires required to be grounded? I have seen some wall-mounted ...