Chapter 9, Table 1 Conduit fill percentages
What changed in Chapter 9, Table 1
The Table 1 fill percentages didn't change. Notes 1, 7 and 8 were reworded to be clearer about raceways, cables and bare conductors.
Point by point
- The percentage limits in Table 1 did not change for the 2026 NEC®.
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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®No change
This section did not change from 2020 to 2023.
2026 NEC®RevisedYou're here
The Table 1 fill percentages didn't change. Notes 1, 7 and 8 were reworded to be clearer about raceways, cables and bare conductors.
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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