230.67 Surge protection
What changed in 230.67
Service surge protection now covers dorm units, hotel and motel guest rooms, and nursing home patient sleeping rooms, not just dwelling units. Replacement and rating rules were added too.
Point by point
- Required for services supplying dwelling units, dormitory units, and hotel and motel guest rooms and suites.
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- 4 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
Every service supplying a dwelling unit now needs a surge protective device, Type 1 or Type 2, including when service equipment is replaced.
Open the 2020 page →2023 NEC®RevisedYou're here
Service surge protection now covers dorm units, hotel and motel guest rooms, and nursing home patient sleeping rooms, not just dwelling units. Replacement and rating rules were added too.
2026 NEC®Revised
Sleeping quarters in fire, police, EMS and similar stations, plus guest rooms in dormitories, were added to the places that need surge protection.
Open the 2026 page →More 2023 changes in Article 230
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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