620.51 Elevator disconnect
What changed in 620.51
An exception for adjustable speed drives was added, and every elevator now needs a surge protective device.
Point by point
- New Exception No. 3 to 620.51(A) applies where an individual branch circuit feeds an elevator controller that uses an adjustable speed drive.
The full lesson is in the Pro Version
Get the whole breakdown
- 3 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
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®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
An exception for adjustable speed drives was added, and every elevator now needs a surge protective device.
More 2026 changes in Article 620
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