NEC® Changes · 2020 NEC®

200.6 Identifying the neutral

RevisedChanged in the 2020 NEC® (from the 2017 NEC®)· Updated October 24, 2026

What changed in 200.6

Re-marking a cable's neutral no longer depends on a supervised site, and larger cable conductors now have their own marking options.

Point by point

  • Re-marking a neutral inside a cable at its terminations no longer requires a supervised site where only qualified persons do the work.

The full lesson is in the Pro Version

Get the whole breakdown

  • 3 more points on exactly what changed
  • The 2017 rule next to the 2020 rule, side by side
  • Why it changed
  • What to do and check on the job

One membership unlocks every NEC® change lesson for 2020, 2023 and 2026, plus every video, quiz, flashcard and the Testing Center.

Checking your membership…

This section across NEC® editions

2020 NEC®RevisedYou're here

Re-marking a cable's neutral no longer depends on a supervised site, and larger cable conductors now have their own marking options.

2023 NEC®No change

This section did not change from 2020 to 2023.

2026 NEC®Revised

Found at 200.7 in the 2026 NEC®.

Renumbered (it was 200.6). White insulation with a colored stripe that isn't green is now addressed.

Open the 2026 page →

More 2020 changes in Article 200

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.

NEC® and National Electrical Code® are registered trademarks of the National Fire Protection Association (NFPA). Electrical Exam Coach is not affiliated with or endorsed by NFPA.

Find it faster on test day

Get a code book that's already tabbed and highlighted.