Neither is better in general, because the question describes two different supply worlds. In a three-phase home, 7 kW is the single-phase class and 11 kW is what a three-phase car draws at a gentle 16 A per phase. In a North American home on 240 V, the same choice reads as roughly 32 A versus 48 A. Your supply, your car’s stated AC limit and your nightly driving decide — in that order.
Key Takeaways
- The 7 vs 11 kW question is first a question about your supply: single-phase or three-phase.
- Your car’s stated AC limit caps what either class can deliver to it.
- Most overnight patterns are refilled by both classes; the gap shows in short windows.
- In North America the same choice reads as the 32 A class versus the 48 A class on 240 V.
Two Supply Worlds, Two Different Questions
| Your supply | The 7 kW class | The 11 kW class |
|---|---|---|
| Single-phase (most homes) | About 32 A on one phase — the standard home class | Not reachable on one phase at household currents |
| Three-phase (common in much of Europe) | One phase of a three-phase unit, or a single-phase unit | 16 A on each of three phases |
| North American 240 V split-phase | 32 A class (about 7.7 kW) | 48 A class (about 11.5 kW), on a 60 A breaker |
The supply is a fact about your property, not a preference. If you do not know which you have, an electrician’s survey answers it in one visit — and guessing wrong buys a charger whose top class your house cannot feed. Our explainer on single-phase vs three-phase charging sets out how the classes are built.
The Three Inputs That Decide
- Your supply. Single-phase homes stop at the 7 kW class for one car. Three-phase homes can host either class. The survey, not the shop page, settles this.
- Your car’s stated AC limit. On AC charging the car’s onboard charger sets the ceiling. A car whose documents state a 7 kW-class AC limit gains nothing from an 11 kW unit; a car that accepts the 11 kW class can use it — if the supply offers it.
- Your nightly energy need. Level 2 charging adds roughly 10–20 miles of range per hour across the 7–19 kW band, per the U.S. DOT guide. Divide your daily miles by the hours the car is parked: most overnight patterns fit comfortably inside the 7 kW class, which is why both classes refill the same ordinary night.
When the Difference Actually Shows
The 11 kW class earns its place in three situations: short parked windows between trips, a large battery that regularly arrives low and leaves early, and two cars taking turns on one point in a single evening. Outside those patterns, the extra power mostly shortens a session that was already finishing while you slept. The honest comparison is not which number is bigger, but whether your routine ever sees the gap — the session-time picture is set out in our guide to charging times at 7, 11 and 22 kW.
The Two Classes in the EVDANCE Range
The EV-ACS3210E is the single-phase option: 32 A, about 7 kW, Type 2. For a three-phase home, the ACS1605PE delivers exactly the 11 kW class — 16 A three-phase through a CEE five-pin plug, Type 2, 7.6 m cable, IP66 — and the EV-ACT3204PE wallbox covers the class in a fixed 22 kW unit for cars that can take more. Choose by the supply you have and the car you own, not by the larger figure.
Frequently Asked Questions
Can a single-phase home run an 11 kW charger?
Not at household current levels — 11 kW on one phase would need far more current than home circuits carry. On a single-phase supply the practical ceiling for one car is the 7 kW class. An electrician can confirm what your supply is.
My car accepts 11 kW. Should I always buy the 11 kW charger?
Only if your supply is three-phase (or, in North America, your panel hosts the 48 A class) and your routine has the short windows where the extra speed shows. Acceptance alone does not make the bigger unit the better buy.
Does an 11 kW charger cost more to run?
No. The car takes the same energy for the same miles; it just arrives sooner. What can cost more is the installation, if the supply or circuit needs work to host the higher class.
Related Reading
- Single-Phase vs Three-Phase EV Charging: 7kW, 11kW and 22kW Explained
- How Long Does It Take to Charge an EV at 7 kW, 11 kW and 22 kW?
- How Many kW Is a Level 2 Charger?
- Which Level 2 Charger Should I Buy? A Buyer’s Checklist
