110.21(A)(2) Marking of Reconditioned Equipment.

Reconditioned equipment shall be marked with the name, trademark, or other descriptive marking by which the organization responsible for reconditioning the electrical equipment can be identified, along with the date of the reconditioning, and the term “reconditioned” or similar.
Click to Enlarge
Reconditioned equipment shall be marked with the name, trademark, or other descriptive marking by which the organization responsible for reconditioning the electrical equipment can be identified, along with the date of the reconditioning, and the term “reconditioned” or similar.

Code Change Summary: Revised text on the required marking of reconditioned equipment.

In the 2023 NEC®, Section 110.21(A)(2) was put into a list format and the requirements on removing the original listing mark were expanded to provide additional clarity.

Reconditioned equipment must be marked with the following:

In the 2023 NEC®, listed equipment that is reconditioned must have the original listing mark removed or made permanently illegible. For equipment that has a listing mark integrated into the nameplate, only the part of the nameplate that includes the listing mark must be removed or made illegible.

Requiring the original listing mark to be removed or made permanently illegible ensures that a false impression is not given that the original listing mark that was applied when the equipment was new covers what occurs during the reconditioning of the equipment.

When a listing mark is placed on new electrical equipment before it leaves the factory, that listing mark attests that the equipment complied with the applicable standards at the initial time of manufacture. Once the equipment leaves the factory, is field installed and then rebuilt at a later date, there’s no way that the original listing label can be relied upon as a way to verify that the rebuilt equipment continues to comply with the newest version of the applicable standard.

Many equipment rebuilders have an agreement with a Nationally Recognized Testing Laboratory (NRTL) such as UL and are approved to remove the existing listing label upon refurbishing and replace it with a similar label that will include the word “rebuilt” or similar as part of the new listing label. This ensures that those responsible for installing and inspecting are aware that the product was rebuilt and compliant with the newest applicable product safety standard.

Below is a preview of the NEC®. See the actual NEC® text at NFPA.ORG for the complete code section. Once there, click on their link to free access to the 2023 NEC® edition of NFPA 70.

2020 Code Language:

110.21(A)(2) Reconditioned Equipment. Reconditioned equipment shall be marked with the name, trademark, or other descriptive marking by which the organization responsible for reconditioning the electrical equipment can be identified, along with the date of the reconditioning.

Reconditioned equipment shall be identified as “reconditioned” and the original listing mark removed. Approval of the reconditioned equipment shall not be based solely on the equipments original listing.

Exception: In industrial occupancies, where conditions of maintenance and supervision ensure that only qualified persons service the equipment, the markings indicated in 110.21(A)(2) shall not be required for equipment that is reconditioned by the owner or operator as part of a regular equipment maintenance program.

2023 Code Language:

110.21(A)(2) Reconditioned Equipment. Reconditioned equipment shall be marked with the following:

(1) Name, trademark, or other descriptive marking of the organization that performed the reconditioning

(2) The date of the reconditioning

(3) The term reconditioned or other approved wording or symbol indicating that the equipment has been reconditioned

The original listing mark shall be removed or made permanently illegible. The equipment nameplate shall not be required to be removed or made permanently illegible, only the part of the nameplate that includes the listing mark, if applicable. Approval of the reconditioned equipment shall not be based solely on the equipments original listing.

Exception: In industrial occupancies, where conditions of maintenance and supervision ensure that only qualified persons service the equipment, the markings indicated in 110.21(A)(2) shall not be required for equipment that is reconditioned by the owner or operator as part of a regular equipment maintenance program.

Did You Like This? Let Us Know With A Like! Thanks!

110.21(A)(2) Marking of Reconditioned Equipment.

Below is a Real Question from our Electrical Continuing Education Courses for Electrical License Renewal:

Based on the 2023 NEC, which of the following is true or reconditioned equipment?

A: Reconditioned equipment shall be marked with the term “serviced”.
B: Reconditioned equipment requires no special marking other than the original listing mark.
C: The original listing mark shall be removed or made permanently illegible.
D: Reconditioned equipment shall be marked with the name of the electrician.
Please register or sign in for electrical continuing education courses.

If you were already signed in, your session probably expired, please sign back in.