445.6 Generator listing
What changed in 445.6
Every stationary generator now has to be listed, whatever its voltage. Before, the listing rule stopped at units rated 600 volts or below.
Point by point
- Before, the listing rule only reached stationary generators at 600 volts or below.
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Get the whole breakdown
- 2 more points on exactly what changed
- The 2020 rule next to the 2023 rule, side by side
- Why it changed
- What to do and check on the job
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This section across NEC® editions
2020 NEC®New
Stationary generators at 600 volts or less now need a listing; one-of-a-kind or custom units can be field labeled instead.
Open the 2020 page →2023 NEC®RevisedYou're here
Every stationary generator now has to be listed, whatever its voltage. Before, the listing rule stopped at units rated 600 volts or below.
2026 NEC®No change
This section did not change from 2023 to 2026.
More 2023 changes in Article 445
This is a plain-English summary, not the NEC®'s exact wording. Always check the full section in the NEC® edition your area has adopted, plus any local amendments.
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