NEC 2023 210.8 GFCI expansion: correlation with OSHA (deep dive 8)

What changed in 210.8 for 2023

NEC 2023 expanded GFCI protection in 210.8 to capture more of the receptacle and equipment outlets that field crews actually use. The 50-amp ceiling is gone in several places. Single-phase 250V outlets now fall under GFCI requirements where they did not before, and 210.8(F) keeps outdoor outlets for dwelling HVAC equipment under GFCI protection (with the limited tolerance window from the TIA still in play on 2020 jobs).

The headline shifts for 210.8(A) and 210.8(B): all 125V through 250V receptacles, 150V to ground or less, 60A or less, single phase, and 100A or less, three phase, in the listed locations require GFCI. Read the article carefully. The voltage and amperage thresholds are different between (A) dwelling and (B) other-than-dwelling, and the location list keeps growing.

Key locations now explicitly covered or clarified:

• 210.8(A): bathrooms, garages, outdoors, crawl spaces, basements, kitchens, sinks (within 6 ft), boathouses, bathtubs/showers, laundry, indoor damp/wet bar sinks
• 210.8(B): added accessory buildings, indoor damp and wet locations, and laundry areas
• 210.8(D): kitchen dishwasher branch circuit (GFCI protection for the outlet)
• 210.8(F): outdoor outlets for dwelling units (HVAC, etc.)

Why OSHA correlates here

OSHA 1926.404(b)(1) on construction sites gives you two paths: GFCI on all 125V, single-phase, 15A, 20A, and 30A receptacle outlets not part of the permanent wiring, or an Assured Equipment Grounding Conductor Program (AEGCP). Most contractors run GFCI because the paperwork burden of an AEGCP is brutal.

The NEC 2023 expansion narrows the gap between what you install permanently and what OSHA already demands on temporary power. If the receptacle is in a garage, basement, accessory structure, or outdoors, your permanent install now matches the protection level OSHA expects on the temp pole feeding the same trades. Fewer surprises at rough-in, fewer pigtail GFCIs hanging off cords during inspection.

Field reality: nuisance trips and inrush

The expansion picked up a lot of motor loads, compressors, sump pumps, well pumps, and HVAC condensers that historically tripped Class A GFCIs at startup. The 2023 cycle and the related TIAs reflect manufacturer pushback. Class A still trips at 4-6 mA. Inrush currents and capacitive coupling on long runs do not care about your schedule.

Plan for it. Before you energize, verify the equipment is rated for downstream GFCI, check for OEM-required surge or filter components, and keep run lengths reasonable. Long underground runs to a well house are notorious.

If you are landing a new condenser on a 240V outdoor outlet under 210.8(F), call the manufacturer's tech line first. Some compressors need a specific listed GFCI device, not just any 2-pole breaker off the shelf.

Selecting the right device

For 250V single-phase loads (well pumps, EVSE hardwired-via-receptacle setups, condensers), you need a 2-pole GFCI breaker listed for the voltage and amperage. Not every panel has one available across all amp ratings. Check the listing before you bid.

For 100A 3-phase outlets in commercial kitchens, light industrial, and accessory buildings under 210.8(B), 3-pole GFCI breakers exist but availability and lead time are real constraints. Spec early.

• Confirm the device is listed as Class A (4-6 mA personnel protection), not just GFPE
• Verify panel compatibility (interior and brand-specific breaker)
• Check the equipment listing for GFCI compatibility statements
• For 210.8(F) outdoor HVAC, consider a GFCI device at the disconnect rather than the breaker for easier reset access

Correlation in practice on a job site

Temporary power feeds the same receptacles that will eventually become permanent. With 2023 in force, the temp pole and the finished panel agree on protection. That matters for two reasons: tool damage claims drop when crews are not bypassing GFCIs to keep work moving, and your inspector has fewer reasons to fail a rough.

OSHA also requires the GFCI to be tested. 1926.404(b)(1)(ii) does not spell out a frequency for portable GFCIs, but the manufacturer instructions usually do (monthly is common). Permanent GFCIs under NEC fall under the standard listed-device test button protocol. Document it the same way you document megger readings.

On commercial remodels, walk the existing panel before demo. Pre-2023 panels almost never have GFCI on the dishwasher, the disposal, or outdoor HVAC. If you are adding circuits or replacing equipment, 210.8 applies to the new work, and the AHJ may push you further.

Documentation and handoff

Mark GFCI-protected circuits clearly on the panel schedule and the as-built. Owners and future trades need to know which breakers are 2-pole GFCIs, because resetting a 240V GFCI is not intuitive for a homeowner or maintenance tech.

If you are working under both NEC 2023 and OSHA, your scope of work and submittals should call out the device class, the listing, and any equipment compatibility verification. That paper trail protects you when a $400 condenser board fails six months in and the GC starts pointing fingers.