All toolsCalculatorsElectricalEV Charger Load & Demand
EV Charger Load & Demand
Estimate connected and diversified EV charge-point load and supply current (BS 7671 Section 722).
The Ensign ToolboxEV Charger Load & DemandEstimate connected and diversified EV charge-point load and supply current (BS 7671 Section 722).
Charge points
no.
kW
7.4 kW 1φ · 11/22 kW 3φ typical
Supply
V
230 line-neutral (1φ) · 400 line-line (3φ)
EV chargers run near unity (IEC 61851)
Diversity
1.0 = no diversity (BS 7671 continuous load); reduce for multiple points (IET CoP / A4:2026)
Enter the charger count, power, supply and diversity to calculate the demand