Electric vehicle charging duration depends upon traction battery pack capacity, AC supply voltage and amperage, onboard charger power limits, and electrical thermal losses. In this EV charging sizing workspace, electrical supply parameters are configured with three variables: a battery pack capacity factor ($V_1$), a charging circuit current multiplier ($V_2$), and a power loss resistance divisor ($V_3$).

The utility determines the primary energy transfer ratio ($[V_1 imes V_2] / max(0.01, V_3)$), the root power throughput factor ($sqrt{max(0, V_1 imes V_2)}$), and the relative battery charging efficiency share ($[V_1 / (V_1 + V_2)] imes 100$).

### Distinct Worked Calculation Evaluating a Level 2 home charging circuit installation: - Pack Capacity Factor ($V_1$): 60 - Current Supply Multiplier ($V_2$): 40 - Resistance Loss Divisor ($V_3$): 8

Step-by-step results: - Primary Energy Metric: $(60 imes 40) / 8 = 2400 / 8 = 300.00$ - Power Throughput Root: $sqrt{60 imes 40} = sqrt{2400} approx 48.99$ - Charging Efficiency Share: $[60 / (60 + 40)] imes 100 = (60 / 100) imes 100 = 60.00%$

### Local Electrical Sizing Privacy All electrical sizing formulas calculate locally in your web browser. Battery capacity values, circuit breaker sizes, and mileage estimates remain strictly on your personal device.