End-use equipment for series-rated tested combinations must be labeled on which types of equipment?

End-use equipment for series-rated tested combinations must be labeled on which types of equipment?

• A. Panelboard and Switchboard
• B. Control Panel
• C. Meter Cabinet
• D. Junction Box

Answer: (A)

When a series-rated tested combination is used, the labeling goes on the end-use equipment that houses that listed assembly—typically the panelboard or switchboard. The listing applies to that equipment at the point of use, and the label communicates the approved series rating and any limitations, so installers and inspectors know the correct configuration and devices to use. Other enclosures like control panels, meter cabinets, or junction boxes aren’t the end-use distribution equipment covered by the series-rated listing, so they don’t carry the required labeling for that combination. Therefore, the labeling is placed on panelboards and switchboards.

When a series-rated tested combination is used, the labeling goes on the end-use equipment that houses that listed assembly—typically the panelboard or switchboard. The listing applies to that equipment at the point of use, and the label communicates the approved series rating and any limitations, so installers and inspectors know the correct configuration and devices to use. Other enclosures like control panels, meter cabinets, or junction boxes aren’t the end-use distribution equipment covered by the series-rated listing, so they don’t carry the required labeling for that combination. Therefore, the labeling is placed on panelboards and switchboards.