How Many Amps Does a Home EV Charger Need? (Europe)

Short answer: decide first between single-phase 230 V and three-phase 400 V. For most homes, 7.4 kW (32 A, single-phase) is the sweet spot. If you have a three-phase supply and approval, 11 kW (16 A × 3) is widely practical; 22 kW (32 A × 3) is site-dependent and often needs notification or limits from your DSO/DNO.

What amps really change

Amperage sets the charging speed and installation complexity. Three-phase spreads current across phases, reducing per-conductor load and keeping cables manageable.

Your real-world constraints

Supply type: many homes are single-phase; three-phase opens the door to 11–22 kW.

Main fuse / contracted capacity: your DSO/DNO may cap available current.

Onboard charger (OBC): many EVs accept 7.4 kW (1×32 A) or 11 kW (3×16 A); fewer make full use of 22 kW (3×32 A).

Local regulations: notification/approval thresholds and load management rules differ by country.

Common EU charging tiers

3.7 kW = 1×16 A; 7.4 kW = 1×32 A; 11 kW = 3×16 A; 22 kW = 3×32 A.

What to pick and when

• 1×32 A (7.4 kW): default for single-phase homes—fast enough overnight without stressing the main fuse.

• 3×16 A (11 kW): balanced three-phase choice; many EVs top out here on AC.

• 3×32 A (22 kW): only if your car and contract allow it, and cable runs and switchgear are sized accordingly.

Cost levers you feel

Run length, cable cross-section, protection devices (RCD type/RCBO), and whether load management is needed alongside heat pumps or induction hobs.

A 30-second decision path

Confirm single-phase vs three-phase supply and contracted capacity.

Check your car’s OBC (7.4 vs 11 vs 22 kW).

Pick 7.4 kW (1×32 A) for most single-phase homes; 11 kW (3×16 A) for most three-phase homes.

Use load management if the main fuse is modest or you plan multiple EVs.

If capacity is tight or you switch between locations, a Portable EV Charger (Type 2) with adjustable current ensures a safe and adaptable setup.

Pair it with an EV Charging Gun Holster & Cable Dock to protect the connector and keep cables tidy day to day.

Installer checklist

• Confirm supply and main fuse

• Select breaker and cable cross-section for 1φ/3φ tier

• RCD type per EVSE spec

• Labeling, torque, and functional test

• Configure load management where required

FAQ 

Do I need a three-phase charger to charge fast at home?

Not necessarily. 7.4 kW (1×32 A) on single-phase covers most overnight needs. Three-phase helps if you want 11 kW (3×16 A), have higher daily mileage, or need to balance loads across phases.

Is 22 kW (3×32 A) worth it?

Only if your car supports 22 kW AC, your contracted capacity and switchgear allow it, and run lengths/cable cross-sections are sized accordingly. Otherwise, you pay more for infrastructure with little real-world gain.

Which RCD/protection do I need for my wallbox?

Follow the EVSE spec and local rules. Many units integrate 6 mA DC detection, allowing an upstream Type A device; others require Type B. Your installer will size the breaker, RCD/RCBO, and cable cross-section per 1φ/3φ tier and national code.