NEC® Changes · 2020 NEC®

705.13 Power control systems

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

What changed in 705.13

Power control systems that limit current from power sources and storage are now recognized, with rules for listing, settings, overcurrent protection and access.

Point by point

  • A power control system that limits output from power sources or storage has to be listed.

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  • 4 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

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This section across NEC® editions

2020 NEC®NewYou're here

Power control systems that limit current from power sources and storage are now recognized, with rules for listing, settings, overcurrent protection and access.

2023 NEC®No change

This section did not change from 2020 to 2023.

2026 NEC®No change

This section did not change from 2023 to 2026.

More 2020 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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