32 amp EV charger: power, breaker size and range per hour
32 A × 240 V = 7.68 kW · circuit ≥ 40 A (usually a 40 A breaker) · about 26 mi of range per hour at 30 kWh/100 mi
The breaker figure follows the NEC rule that EV charging is a continuous load, so the circuit is sized at 125% of the charger's current (see DOE AFDC: charging at home). This is an estimate, not electrical advice; at 208 V (some apartments) power is about 13% lower.
Range added per hour for popular EVs
| EV | EPA kWh/100 mi | Per hour | Per 8-hour night |
|---|---|---|---|
| Tesla Model Y | 26.5 | 29 mi | 232 mi |
| Tesla Model 3 | 29.6 | 26 mi | 208 mi |
| Chevrolet Equinox EV | 32.6 | 24 mi | 188 mi |
| Ford F-150 Lightning | 47.9 | 16 mi | 128 mi |
| Hyundai Ioniq 5 | 34.5 | 22 mi | 178 mi |
| Ford Mustang Mach-E | 33.6 | 23 mi | 183 mi |
| Kia EV9 | 41 | 19 mi | 150 mi |
| Rivian R1S | 43.2 | 18 mi | 142 mi |
Estimates; assumes the car accepts 7.7 kW on AC. All EVs.
ENERGY STAR chargers rated 32 A (9), lowest standby first
| Charger | Max output | Max current | Cord | Wi-Fi/network | Standby (no vehicle) | Max standby cost/yr* |
|---|---|---|---|---|---|---|
| Tesla Mobile Connector (1937825-XX-X) | 7.68 kW | 32 A | 19 ft | No | 0.43 W | $0.69 |
| Blink Level 2 AC EVSE BC3-32A-N | 7.68 kW | 32 A | 25 ft | Yes | 1.61 W | $2.58 |
| Webasto CSG1SAE-032016 | 7.68 kW | 32 A | 20 ft | No | 2.31 W | $3.71 |
| Leviton EV320 | 7.68 kW | 32 A | 18 ft | Yes | 2.8 W | $4.49 |
| Eaton Green Motion EV Chargers, Wall Charger | 7.68 kW | 32 A | 25 ft | Yes | 2.99 W | $4.80 |
| Leviton EV32W | 7.68 kW | 32 A | 18 ft | Yes | 3.27 W | $5.24 |
| FLO Core+V2PS | 7.68 kW | 32 A | 24 ft | Yes | 3.4 W | $5.45 |
| EvoCharge EVO32-310-001-ESEVO32-310-001-ES | 7.68 kW | 32 A | 25 ft | Yes | 3.48 W | $5.58 |
| Autel Maxi US AC LW7-N14 | 7.68 kW | 32 A | 25 ft | Yes | 3.49 W | $5.60 |
*Estimate: ENERGY STAR "no vehicle mode" input power × 8,760 h, i.e. the most it could use in a year if no car were ever plugged in, × U.S. average residential rate 18.31¢/kWh (EIA, July 2026 (preliminary)).