National Electrical Code for Residential homes:
The 2020 NEC® states that Arc-fault circuit-interrupter (AFCI) protection shall be provided as required in 210.12(A), (B), (C), and (D). The arc-fault circuit interrupter shall be installed in a readily accessible location.
(A) Dwelling Units. All 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets or devices installed in dwelling unit kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, or similar rooms or areas shall be protected by any of the means described in 210.12(A)(1) through (6)
Additional information provided in the 2020 NEC
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Anyone's house wired with AFCI breakers in conjunction with the GFCI outlets, or is this code, just an added protection designed by some electrical engineers for additional work?
ie, cost benefit too high to make it not worth it?
thanks