All UL Listed luminaires must be equipped with American standard-sized mounting hardware. ...
Metallic Outlet Boxes are Listed under the category Metallic Outlet Boxes (QCIT), in the UL Electrical Construction Equipment Directory. ...
UL has five new categories specifically for AFCI devices, now covered under UL 1699, Standard for Arc-Fault Circuit Interrupters. ...
UL does evaluate the manufacturer’s installation instructions provided with UL certified products. ...
The new Section 210-12 of the 1999 National Electrical Code (NEC) requires arc-fault circuit-interrupter protection for some branch circuits. Does ...
Can a UL Listed product be modified in the field if the manufacturer indicates that the revision is ok and ...
Large signs do. Electric signs so large that shipment in one carton or fully assembled is impractical may be divided ...
Flooding and other natural disasters prompt many questions about water-damaged electrical equipment. Can the equipment be dried out? Are the ...
Question: Letter of findings I recently encountered a lightning protection system on a water treatment plant that was certified by ...
Question: GTO cable Which GTO cable types may be used in electric signs? I am especially interested in the cable ...