334.24 Bending radius
What changed in 334.24
For flat NM cable bent on its flat side, the 5-times bending radius is now figured from the cable's thickness, not its width. SE and UF cable got the same change.
Point by point
- The minimum bend is still 5 times the cable's diameter, measured on the inside edge of the bend.
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- 3 more points on exactly what changed
- The 2023 rule next to the 2026 rule, side by side
- Why it changed
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This section across NEC® editions
2020 NEC®No change
This section did not change from 2017 to 2020.
2023 NEC®Revised
For flat NM cable, the minimum bend radius is now based on the widest dimension of the cable. SE and UF cable got the same change.
Open the 2023 page →2026 NEC®RevisedYou're here
For flat NM cable bent on its flat side, the 5-times bending radius is now figured from the cable's thickness, not its width. SE and UF cable got the same change.
More 2026 changes in Article 334
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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