NEC® Changes · 2026 NEC®

705.25 Interconnection wiring methods

RevisedChanged in the 2026 NEC® (from the 2023 NEC®)· Updated October 24, 2026

What changed in 705.25

New 705.25(B) requires dc output conductors from power sources to be identified, following the same approach as the dc branch circuit rules in Article 210.

Point by point

  • New subdivision 705.25(B) covers identifying dc output conductors from power sources.

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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

New 705.25(B) requires dc output conductors from power sources to be identified, following the same approach as the dc branch circuit rules in Article 210.

More 2026 changes in Article 705

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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