225.15 Supports over buildings
What changed in 225.15
Support rules for feeders and branch circuits passing over buildings now stand on their own instead of pointing to the service conductor rule.
Point by point
- This section no longer sends you to 230.29, the support rule for service conductors over a roof.
The full lesson is in the Pro Version
Get the whole breakdown
- 2 more points on exactly what changed
- The 2017 rule next to the 2020 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®RevisedYou're here
Support rules for feeders and branch circuits passing over buildings now stand on their own instead of pointing to the service conductor rule.
2023 NEC®No change
This section did not change from 2020 to 2023.
2026 NEC®No change
This section did not change from 2023 to 2026.
More 2020 changes in Article 225
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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