NEC 2023 210.8 GFCI expansion: common mistakes (deep dive 7)

What changed in 210.8 for 2023

NEC 2023 pushed GFCI protection further into places where many of us used to run standard receptacles without a second thought. The dwelling unit list in 210.8(A) now covers basements (finished or unfinished), accessory buildings, indoor damp and wet locations, and the long-debated laundry areas. Outside the dwelling, 210.8(B) expanded to catch indoor wet locations, locker rooms with associated showers, and garages, service bays, and similar areas without electrical diagnostic or repair equipment.

The bigger shift is 210.8(F), which requires GFCI protection for outdoor outlets supplied by single-phase branch circuits rated 150V or less to ground, 50A or less. That pulled in heat pumps, mini-splits, and AC condensers. The 2023 cycle added a tentative interim amendment, but the base rule still catches inspectors and electricians off guard on replacement jobs.

210.8(D) also now covers specific appliances by hard-wired connection, not just cord-and-plug, so the days of assuming a dishwasher or range hood escapes GFCI because it is direct-wired are over.

Mistake 1: treating 210.8(F) as optional on AC replacements

The single most common violation we see in the field is a straight condenser swap with no GFCI added to the disconnect. When the existing disconnect is a non-fused pullout, there is no code path that lets you skip protection just because the original install predates 2023. If the work falls under the local jurisdiction's adopted cycle, you owe GFCI.

Manufacturers have been slow, and nuisance tripping on inverter-driven units is real. Fix the install, do not skip the rule. Options that actually work:

• GFCI breaker at the panel sized for the condenser (verify UL listing with the breaker brand)
• GFCI disconnect at the unit, like the Siemens WN2060 or Eaton DG222NGB
• Confirm the condenser is on the manufacturer's compatibility list before energizing

If a unit trips on startup, check the equipment ground bond at the condenser pad before blaming the GFCI. A corroded lug to the copper lineset is the usual culprit, not the breaker.

Mistake 2: missing the 6 foot rule drift

210.8(A)(7) still measures within 6 feet of the outside edge of a sink, but the 2023 text clarifies that the measurement is the shortest path the cord would travel without passing through a wall, floor, ceiling, door, or window. Electricians pulling old tape measures in a straight line often miss receptacles on the back side of an island or peninsula that are actually in scope.

The same 6 foot measurement applies around bathtubs and shower stalls under 210.8(A)(9), and around laundry sinks now that laundry areas are explicitly listed. If the receptacle feeds a washing machine behind a utility sink, it needs GFCI, period.

Mistake 3: forgetting the readily accessible requirement

GFCI protection is only compliant if the device or breaker is readily accessible. 210.8 has always required this, but the 2023 expansion made it a bigger trap because more protection is now being placed at panels or equipment disconnects that live behind stored junk, above drop ceilings, or behind appliances.

Common field failures we flag on inspection walks:

1. GFCI receptacle buried behind a built-in microwave
2. Dead-front GFCI inside a finished basement storage closet with a lock
3. GFCI breaker in a panel blocked by shelving in a garage
4. Outdoor GFCI receptacle on the back side of an HVAC condenser

If the homeowner cannot reach the test and reset buttons without a ladder, tools, or moving equipment, it fails. Plan the protection location during rough, not after trim.

Mistake 4: mixing GFCI with shared neutrals

Expansion of 210.8 into basements and laundry rooms has run straight into older multi-wire branch circuits. A two-pole GFCI breaker is required for any MWBC feeding GFCI-required outlets, because a standard single-pole GFCI will trip instantly on a shared neutral.

On remodels, always trace the neutral back to the panel before assuming a single-pole GFCI solves the problem. If you find an MWBC, you have three options: install a two-pole GFCI breaker, split the circuit into two home runs, or move the load to a dedicated circuit. Do not pigtail the neutral at the first device and hope for the best.

Mistake 5: skipping the GFCI on hardwired appliances

210.8(D) is where a lot of kitchen and laundry remodels fall out of compliance. Dishwashers, electric ranges, wall ovens, microwaves (including drawer microwaves), and clothes dryers all require GFCI protection in the 2023 code, whether cord-and-plug or hardwired.

The practical answer is almost always a GFCI breaker, since listed GFCI receptacles for 30A and 50A appliances are limited and expensive. Confirm the appliance is listed for GFCI use, because some older induction ranges and commercial-grade dryers still show nuisance tripping on ground-fault protection.

Before you swap a range breaker to GFCI, check the appliance model number against the manufacturer's current installation manual. GE, Whirlpool, and Samsung have updated most 2024 and later models, but a 2019 range sitting in a warehouse may still have warning language that a picky inspector will cite.

Closing the loop on inspection

The through-line on every one of these mistakes is the same: 2023 expanded where GFCI lives, and the habit of running a standard breaker or receptacle in a spot that was fine three years ago is what gets flagged. Verify the adopted code cycle in your jurisdiction, because several states are still on 2020 or have amended out 210.8(F). When in doubt, protect it and move on.