Field Marking Labels.
With the many label requirements due to generators, solar, transfer switches, and emergency disconnect, to name a few.
What I see during inspections are paper-based peel-and-stick labels.
An example picture is attached below.
The 2023 NEC Code section 110.21 (B) below highlights this requirement.
FIELD MARKING SHALL BE OF SUFFICIENT DURABILITY TO WITHSTAND THE ENVIRONMENT INVOLVED.
The Michigan Environment gives us.
Rain, Cold, Snow, Ice, Sleet, Wind, and solar labeling fading.
The above type of labeling seems un-acceptable for meeting 110.21 (B).
REFERENCING EMERGENCY DISCONNECT MAKING IN THE NEMA STANDARDS PUBLICATION. NEMA EDM P1-2019 I did not find a reference example for the durable weather-resistant material suggested to use.
I have seen plastic limacoid tags with small self-taping screws or strong adhesives to attach the field markings. Some equipment installed appears to come with the durable labels attached.
Other types shown to meet the code requirement would be acceptable to the AHJ, but how are we to know?
NEC 90.4 Enforcement. Grant power to the AHJ to decide on the approval of equipment and materials.
Having a material or choice of materials meeting the code requirement would solve this issue.
Certainly, Our First Responders, the folks we are attempting to support with durable labeling, appreciate this effort for durable lasting labeling.
Your thoughts and feedback on this discussion will be helpful.
Respectfully.
