Reconditioned equipment that is required by the Code to be listed must be:

Reconditioned equipment that the National Electrical Code (NEC) requires to be listed must be field labeled. This is important because reconditioned equipment, even though it may have been refurbished or restored to working condition, must still meet the necessary safety standards and performance criteria outlined by the NEC.

Field labeling serves as a verification that the equipment has been inspected, tested, and meets the applicable codes before being put back into service. This process ensures that safety and reliability are maintained and assures users that the equipment adheres to the same standards as new items. Therefore, field labeling is an essential step in establishing the legitimacy and compliance of reconditioned equipment in electrical installations.

By having this requirement, the NEC provides a framework to ensure that all equipment used in installations, whether newly purchased or reconditioned, is safe for use and fully compliant with established safety regulations.