Weekly digest #15: EV charging news

NEVI funding shifts and what it means on the ground

The federal NEVI program rebooted its guidance in March, and states are cutting new contracts for DC fast charging sites along interstate corridors. If you subcontract for EVSE installers, expect a wave of Level 3 pedestal work at highway-adjacent travel plazas and truck stops through Q3. Most of these sites pull 480V three-phase at 150kW to 350kW per port.

The catch: utility service upgrades are the choke point, not the concrete. Transformer lead times are still running 40 to 60 weeks in most ISO territories. If your GC hands you a four-port 350kW site with a "start next month" timeline, confirm the utility has already energized the pad before you mobilize gear.

Article 625 still governs the EVSE side, but the service and feeder work lives under Articles 215, 230, and 450. Coordinate your one-line with the POCO early.

Load calculations under 625.42 keep tripping up inspectors

NEC 625.42 requires EVSE to be considered a continuous load, so your feeder and branch circuit ampacity must be sized at 125% of the EVSE nameplate. That much is old news. What is catching crews in 2026 is the interaction with 625.42(B), which permits an Energy Management System (EMS) to reduce the calculated load.

If the site uses an EMS compliant with 750.30, you can size conductors based on the maximum output the EMS will allow, not the sum of all EVSE nameplates. This is the only practical way to install six or eight Level 2 ports on a 200A residential or small commercial service without a service upgrade.

Document the EMS settings and include the manufacturer listing in your permit package. Inspectors in several AHJs are now requiring a printout of the EMS configuration at final.

Field tip: Before you commit to an EMS-based load calc, confirm the AHJ accepts 625.42(B). A handful of jurisdictions still require full nameplate sizing regardless. A five minute call to the plans examiner saves a week of rework.

GFCI and personnel protection requirements

Article 625.54 mandates GFCI protection for all 125V, single phase, 15A and 20A receptacles installed for EV charging. This is separate from the CCID (Charge Circuit Interrupting Device) that is built into every listed Level 2 EVSE.

For hardwired Level 2 units, 625.54 does not apply because there is no receptacle. But if you install a NEMA 14-50 for a plug-in EVSE, you now need GFCI protection on that 240V circuit per 625.54 as amended in the 2023 code. Most AHJs on the 2023 cycle are enforcing this aggressively.

• Hardwired EVSE: no 625.54 GFCI required (CCID in the unit covers it)
• NEMA 14-50 for EV: GFCI breaker required, 2023 NEC
• NEMA 6-50 for EV: same, GFCI breaker required
• Standard 120V 5-20R in garage: 210.8(A)(2) GFCI required regardless

The nuisance tripping complaints on 240V GFCI breakers paired with certain EVSE brands are real. Check the EVSE manufacturer compatibility list before you spec the breaker.

Disconnect rules tightened in 625.43

For EVSE rated over 60A or more than 150V to ground, 625.43 requires a disconnecting means with lockout capability. The 2023 cycle clarified that the disconnect must be "readily accessible" and within sight of the EVSE, or capable of being locked in the open position per 110.25.

Translation: for a 48A or 80A hardwired wall unit, you need a service-rated disconnect or a listed disconnect switch, not just the breaker upstream in a panel down the hall. A lot of residential installs from 2021 and 2022 would fail a re-inspection today.

On commercial DC fast charging pedestals, the dispenser itself usually includes an integrated disconnect, but verify the listing. Some older Tritium and ChargePoint units relied on the upstream switchgear to satisfy 625.43, which works only if the switchgear is within sight.

Grounding and bonding on ground-mounted pedestals

Pedestal installs on concrete islands need attention to 250.32 if the pedestal is a separate structure, or 250.30 if it is fed as a separately derived system from a pad-mount transformer. Most four-port DCFC sites end up with a dedicated utility transformer, so 250.30 is the operative article.

Run a supplemental grounding electrode at each pedestal per 250.50. Two ground rods eight feet apart, bonded to the equipment grounding conductor at the pedestal enclosure, handles most AHJ expectations. Ufer grounds in the concrete pad count if you coordinated with the concrete sub before the pour.

Field tip: Photograph your grounding electrode conductor connections before the pedestal gets set. Once the 800 pound dispenser is bolted down, the inspector will take your word for it only if you have pictures.

What to watch next quarter

The 2026 NEC is in the final ballot stage and Article 625 is seeing substantial revisions around bidirectional charging (V2X) and load management. If you work in a state that adopts quickly (California, Massachusetts, Washington), start reading the public inputs now.

Also watch for updated UL 2594 and UL 2231 listings on EVSE coming out of the new interoperability requirements. Several major brands will be pushing firmware updates that change how the EMS reports load to the service panel, which could affect existing 625.42(B) installations.

• 2026 NEC adoption timeline by state
• V2X bidirectional install requirements
• Updated EMS listings and firmware
• Utility transformer lead time trends

Keep your code book current, keep your AHJ on speed dial, and document everything.