Convert charger power into amperage with our ev charger amperage calculator.
Current Draw
48.0 A
Suggested Breaker
60 A
Power
11.5 kW
Level 2 chargers draw 16-80A. A 7.6 kW charger draws 32A, an 11.5 kW draws 48A. Use the calculator to find your charger's exact amperage.
A 48A continuous load requires a 60A breaker per the NEC 125% rule (48 × 1.25 = 60). The calculator shows the recommended breaker size.
Amps = (kW × 1000) ÷ Voltage. For 11.5 kW at 240V = 11,500 ÷ 240 = 47.9A. The calculator does this automatically for any power and voltage.
Level 2 (240V) operates at 16-80A. Common ratings: 16A (3.8 kW), 32A (7.6 kW), 48A (11.5 kW).
Per NEC 80% rule, a 50A circuit supports up to 40A continuous — a 9.6 kW charger maximum.
Tesla Wall Connector: up to 80A configurable (most common 48A). Mobile Connector: 12A (120V) or 32A (240V). Use the calculator for any Tesla setup.
7.2 kW at 240V = 30A. Recommended breaker: 40A (30 × 1.25 = 37.5, rounded up).
Use the calculator above. Enter kW and voltage — it instantly shows current draw and suggested breaker size.
32A charger = 40A circuit. 48A = 60A circuit. 80A = 100A circuit. The calculator shows the required circuit size.
More amps = faster charging. 48A adds ~35 miles/hour, 32A adds ~25 miles/hour. Use our Charging Time Calculator for exact speed estimates.
Methodology
Current draw is computed as: Amps = (kW × 1000) ÷ Voltage. The suggested breaker applies the NEC 125% rule for continuous loads: Breaker = Amps × 1.25, rounded up to the nearest standard size.
Assumptions
