408.4 Circuit directory
What changed in 408.4
Circuit directory rules are now a clear checklist, and panels outside one- and two-family homes must name their power source and where it's located.
Point by point
- The directory rule is now a numbered checklist instead of one paragraph.
The full lesson is in the Pro Version
Get the whole breakdown
- 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®Revised
The panelboard circuit directory can now go in an approved location next to the panel door, not just on or inside it.
Open the 2020 page →2023 NEC®RevisedYou're here
Circuit directory rules are now a clear checklist, and panels outside one- and two-family homes must name their power source and where it's located.
2026 NEC®No change
This section did not change from 2023 to 2026.
More 2023 changes in Article 408
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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