SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/elec-afci-locations-circuit

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

120V single-phase 10A, 15A and 20A branch circuits.

Start playing free

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

Why: AFCI protection covers 120V, single-phase, 10A, 15A and 20A branch circuits feeding outlets or devices in listed areas like kitchens and bedrooms. The 2023 NEC added 10A circuits.

Huh, didn't know that: Extending an existing circuit less than 6 feet with no new outlet or device doesn't trigger the AFCI rule.

The dad joke
These electrician jokes are lame. Don't you have some more current ones?
Like this card?
Play the game

References

Answer: 120V single-phase 10A, 15A and 20A circuits. AFCI protection covers 120V, single-phase, 10A, 15A and 20A branch circuits feeding outlets or devices in listed areas like kitchens and bedrooms. The 2023 NEC added 10A circuits.

  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
    All 120V, single-phase, 15A, and 20A branch circuits supplying outlets or devices
    Checked 2026-10-10.
  2. Minnesota DLI: 2023 NEC Residential Inspection Checklist www.dli.mn.gov/sites/default/files/pdf/eli_inspection_checklist2023NEC.pdf
    10-,15- and 20- amp outlets or devices in dwelling unit kitchens
    Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Trades & ShopGFCIs address shock hazards. What do AFCIs address?Trades & ShopIn 2003, CPSC engineers estimated AFCIs could address about what share of home wiring fires?Trades & ShopUnder the 2023 NEC, which dwelling unit kitchen receptacles need GFCI protection?

That's stuff everyone should know.