What equipment that is listed by a recognized testing agency is acceptable?
Listed or field evaluated equipment that are tested and listed or field evaluated according to recognized standards as specified for each testing agency are considered as acceptable.
I have equipment that is listed by a recognized testing agency for a food display. Is it acceptable to install this in indoor location other than food display?
No. When equipment is identified or recognizable as suitable for a specific purpose, function, use, environment, application, or so forth either by its listing or by the code, the equipment must comply accordingly.
Can a listed electrical product be in violation of the electrical code or the safety standard? If so, what does the Department of Building and Safety do?
Yes. From time to time, a testing agency may list an electrical product that may be in violation of the electrical code, and sometimes in violation of the safety test standard that the equipment supposed to be in compliance with, or evaluated to the incorrect safety test standard.
Does the listing mark or logo on an electrical product satisfy approval of installed product?
In general yes; however, if fraudulent, counterfeited, or non-applicable listing mark or logo is used on the electrical products, or if the installer misapply or use the product for other than its intended purpose, or if the installer does not follow the installation instructions of the product,