Electrical Calculators
EV Charger Circuit
Estimate continuous-load current and minimum circuit ampacity.
01
Inputs
02
Result & worksheet
60.0 A minimum circuit ampacity
Recorded summary
- EVSE setting: 48 A
- Voltage: 240 V
- Connected power: 11.52 kW
- Minimum ampacity: 60.0 A
Formula used
Minimum circuit ampacity = continuous load × 125%Calculation steps
- 48 × 1.25 = 60.0 A
- Connected power ≈ 11.52 kW
Assumptions
- EV charging is treated as a continuous load
- The EVSE setting matches the intended circuit
- This worksheet does not select a standard overcurrent-device size
Verify before use
- EVSE nameplate and manufacturer instructions
- Available service/load capacity
- Conductor ampacity, terminal ratings, and voltage drop
- GFCI, disconnect, receptacle, and local requirements
- Permit, utility, and load-management requirements