For series-rated tested combinations, the end-use equipment must be tested, listed, and marked on which types of equipment?

For series-rated tested combinations, the end-use equipment must be tested, listed, and marked on which types of equipment?

• A. Panelboard and Switchboard
• B. Control Panel
• C. Meter Cabinet
• D. Distribution Board

Answer: (A)

Series-rated tested combinations are evaluated as a complete assembly, not just individual components. The listing and required markings apply to the end-use equipment that houses that assembly, so installers know the entire panel or switchboard has been tested and labeled for the series-rated arrangement. That’s why the end-use equipment must be the panelboard or switchboard—these enclosures carry the markings indicating the series-rated rating for the assembled devices inside. Other enclosures like control panels, meter cabinets, or distribution boards aren’t the standard end-use equipment for this purpose.

Series-rated tested combinations are evaluated as a complete assembly, not just individual components. The listing and required markings apply to the end-use equipment that houses that assembly, so installers know the entire panel or switchboard has been tested and labeled for the series-rated arrangement. That’s why the end-use equipment must be the panelboard or switchboard—these enclosures carry the markings indicating the series-rated rating for the assembled devices inside. Other enclosures like control panels, meter cabinets, or distribution boards aren’t the standard end-use equipment for this purpose.