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Under the 2023 NEC, AFCI protection in 210.12 applies to which dwelling unit branch circuits?

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  1. 120V single-phase 10A, 15A and 20A circuits
  2. 240V circuits only
  3. All feeders over 100A

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References

  1. EC&M: The Apprentice's Guide to AFCIs and the NEC www.ecmweb.com/safety/article/55265078/the-apprentices-guide-to-afcis-and-the-nec Checked 2026-10-10.
  2. Minnesota DLI: 2023 NEC Residential Inspection Checklist www.dli.mn.gov/sites/default/files/pdf/eli_inspection_checklist2023NEC.pdf Checked 2026-10-10.

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