700.32 Emergency selective coordination
What changed in 700.32
Emergency system selective coordination now has to be rechecked when overcurrent devices are replaced or the system is modified.
Point by point
- Emergency overcurrent devices still have to selectively coordinate, designed by an engineer or other qualified person and documented.
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- 3 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®No change
This section did not change from 2017 to 2020.
2023 NEC®RevisedYou're here
Emergency system selective coordination now has to be rechecked when overcurrent devices are replaced or the system is modified.
2026 NEC®Revised
Coordination has to be rechecked when an emergency OCPD is replaced with anything but an exact match, and modifications now have to consider normal-side OCPDs that feed emergency loads.
Open the 2026 page →More 2023 changes in Article 700
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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