NEC® Changes · 2020 NEC®

555.53 Floating building ground-fault protection

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

What changed in 555.53

Floating buildings moved into Article 555. The device feeding a floating building still needs GFPE of 100 mA or less, or the protection can go on the individual feeders or branch circuits.

Point by point

  • Article 553 is gone; floating buildings now have their own part, Part III, in Article 555.

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  • 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

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This section across NEC® editions

2020 NEC®NewYou're here

Floating buildings moved into Article 555. The device feeding a floating building still needs GFPE of 100 mA or less, or the protection can go on the individual feeders or branch circuits.

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 555

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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