310.14 Conductor ampacity
What changed in 310.14
The exception for short lower-ampacity stretches of a circuit was reworded so it's clear when it applies.
Point by point
- The exception in 310.14(A)(2) covers circuits where different sections end up with different ampacities.
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- 2 more points on exactly what changed
- The 2023 rule next to the 2026 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®No change
This section did not change from 2020 to 2023.
2026 NEC®RevisedYou're here
The exception for short lower-ampacity stretches of a circuit was reworded so it's clear when it applies.
More 2026 changes in Article 310
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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