22 kW home EV charger

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.