GFCI & AFCI protection

What GFCI and AFCI devices do

A ground-fault circuit interrupter (GFCI) compares the current going out on a circuit with the current coming back. If some current leaks to ground, for example through a person touching a wet appliance, it shuts off power in a fraction of a second.

An arc-fault circuit interrupter (AFCI) watches for the electrical pattern of an arc, such as a damaged cord, a loose connection or a nail driven through a cable. It shuts off the circuit before the arc can ignite nearby material.

Both come as circuit breakers in your panel or as receptacles. Some devices combine both types of protection. We choose the type based on your panel, your wiring and what the code requires for that circuit.

Which edition of the code applies in Minnesota

Minnesota adopts the National Electrical Code (NEC) without amendment. The Minnesota Board of Electricity adopted the 2026 NEC, effective August 17, 2026. Electrical permits filed before that date must comply with the 2023 NEC. Work we permit now follows the 2026 edition.

The code applies to new work. It does not make you update an older home that you are not changing. When you replace a receptacle, extend a circuit or remodel, the new work must meet current GFCI and AFCI rules.

Where GFCI protection is required in homes

In dwellings, the code requires GFCI protection for 125-volt through 250-volt receptacles on single-phase circuits rated 150 volts or less to ground in these locations: bathrooms, garages and accessory buildings, outdoors, crawl spaces, basements, kitchens, areas with sinks and permanent provisions for food or beverage preparation or cooking, within 6 feet of other sinks, boathouses, within 6 feet of bathtubs or shower stalls, laundry areas, and indoor damp and wet locations.

Since the 2023 NEC, every receptacle in a kitchen needs GFCI protection, not only those serving the countertop. Certain appliances also need GFCI protection, including ranges, wall ovens, cooktops, dryers and microwave ovens. Outdoor outlets at homes need GFCI protection on circuits up to 60 amps under the 2026 NEC, up from 50 amps in 2023. The 2026 edition allows a different class of protection for listed outdoor HVAC equipment.

Where AFCI protection is required in homes

AFCI protection is required for 120-volt, single-phase 10-, 15- and 20-amp branch circuits that supply outlets or devices in kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas and similar rooms or areas.

When wiring in those areas is modified, replaced or extended, the circuit needs a combination-type AFCI at the panel or an outlet branch-circuit AFCI at the first receptacle or, as of the 2026 NEC, the first switch on the circuit. An extension of 6 feet or less that adds no outlets or devices is exempt. This rule often comes up during remodels and renovations and when we replace receptacles and switches.

Minnesota requires a license to perform electrical work, with an exemption for a homeowner working on a home they own and occupy under a permit and inspection. Do not replace breakers in your panel yourself. If a GFCI or AFCI trips again each time you reset it, leave it off and call us. Repeated tripping can point to a wiring fault, a failing appliance or water in a box.

Signs you need GFCI or AFCI protection

• Your bathroom, kitchen, laundry, garage or basement outlets have no TEST and RESET buttons and no GFCI breaker
• Outdoor outlets are not GFCI protected or lack a weather-resistant cover
• A GFCI does not trip when you press TEST, or will not reset
• A breaker or GFCI trips repeatedly on the same circuit
• You are remodeling, finishing a basement or extending circuits in bedrooms or living areas
• Outlets near a sink or tub still use plain receptacles

Common questions

Sources

• Minnesota Department of Labor and Industry — Electrical codes and standards (2026 NEC effective Aug. 17, 2026)
• Minnesota Department of Labor and Industry — Minnesota Electrical Code fact sheet (2026 NEC adopted without amendment)
• Minnesota Department of Labor and Industry — 2023 NEC FAQ (kitchen GFCI, specific appliances)
• City of Champlin, MN — 2026 National Electrical Code FAQ (210.8(F) HVAC, 210.12(E) AFCI extensions)
• EC&M — Key revisions to Chapter 2 of the 2026 NEC
• City of Denison — 2026 NEC significant changes (outdoor outlet GFCI 50A to 60A)
• Minnesota Statutes 326B.33 — Electrical licenses and homeowner exemption