How many amps does an EV charger use? The quick answer

A home EV charger typically draws between 6 A and 32 A. The two most common configurations in Europe are 16 A and 32 A, on either a single-phase or a three-phase supply. On a standard 230 V single-phase connection, 16 A gives you 3.7 kW and 32 A gives you 7.4 kW. On a three-phase connection, 16 A delivers 11 kW and 32 A delivers 22 kW.

 

Which of those your home can support depends on the electrical installation, not the charger. The charger is configured to a maximum current during installation, and the car then draws up to that limit.

kW to amps: a quick reference for EV charging

Charging power in kilowatts is simply voltage multiplied by current. On a single-phase 230 V supply, kW = 230 x amps / 1,000. On a three-phase supply, all three phases carry current at once, so kW = 3 x 230 x amps / 1,000.

Single-phase (230 V)

  • 6 A: 1.4 kW (the minimum charging current)
  • 10 A: 2.3 kW (typical for charging from a domestic socket)
  • 16 A: 3.7 kW
  • 32 A: 7.4 kW

Three-phase (400 V)

  • 6 A: 4.1 kW
  • 16 A: 11 kW
  • 32 A: 22 kW

Single-phase EV charging amperage

10 amp EV charging

Around 2.3 kW. This is the territory of the portable cable plugged into an ordinary domestic socket, sometimes called a granny cable. It is slow, adding roughly 10-15 km of range per hour, and it is rarely suitable as a permanent home charging setup. Standard sockets are not designed to deliver full current for hours on end, which is why a dedicated charger is the safer long-term choice. We cover this in detail in our guide on charging from a normal socket.

16 amp single-phase EV charging

Up to 3.7 kW. Common in older installations and in homes with limited spare electrical capacity. For a driver covering average daily mileage, an overnight session at 3.7 kW is usually enough to leave with a comfortable buffer each morning.

32 amp single-phase EV charging

Up to 7.4 kW. This is the standard home charging setup in markets where homes are supplied with single-phase power, such as the UK. A 7.4 kW charger will typically take a mid-sized EV battery from low to full overnight.

Three-phase EV charging amperage

16 amp three-phase EV charging

Up to 11 kW. Where three-phase power is available, as it is in most Norwegian, German and Dutch homes, 16 A across three phases is a popular balance between charging speed and installation requirements. It draws no more current per phase than a 16 A single-phase setup, but delivers three times the power.

32 amp three-phase EV charging

Up to 22 kW. The fastest common AC charging configuration, suited to high daily mileage, shared installations and commercial sites. It requires a higher-capacity electrical installation, and, worth knowing before you pay for one, many cars cannot make use of it. More on that below.

What determines how many amps your EV actually draws?

Four things, and the lowest of them wins:

  • The charger’s configured limit. Set during installation to match what the property’s electrical system can safely supply.
  • The car’s onboard charger. Every EV converts AC to DC through its own onboard charger, and that component has a ceiling. A car with an 11 kW onboard charger will draw 16 A per phase from a 22 kW charger, never 32 A. Our guide to charging speeds explains this in full.
  • The charging cable. Cables are rated for a maximum current, and the car and charger agree a limit the cable can handle.
  • Dynamic load balancing. If the household is using a lot of power, a smart setup temporarily reduces the charging current, down to the 6 A minimum if necessary, and raises it again when capacity frees up.

So the amperage printed on the charger is a maximum, not a constant. In practice the current varies through a session, which is precisely what keeps the installation safe.

What size circuit does an EV charger need?

An EV charger should always be on its own dedicated circuit with appropriately rated protection, sized by a qualified electrician to local regulations. Charging is a continuous load: the charger can draw its full current for hours at a time, which is a very different demand profile from a kettle or an oven. That is why the assessment of your fuse box, supply capacity and cable runs belongs to the installer, not to guesswork.

What amperage do amina EV chargers support?

EV chargers from amina charging are designed for European power grids and can be configured for 16 A or 32 A, on single-phase or three-phase supplies. That covers the full range from 3.7 kW to 22 kW with one compact unit.

How is amperage controlled on an amina EV charger?

We have partnered with multiple smart home and smart charging providers. The amperage is managed through these providers’ apps, which connect directly to the amina charger. There, the installer or user sets the maximum current the charger is allowed to draw, ensuring charging stays within the limits of the home’s electrical capacity.

Frequently asked questions about EV charger amps

How many amps does a 7.4 kW charger use?

32 A on a single-phase 230 V supply.

How many amps does an 11 kW charger use?

16 A per phase on a three-phase supply.

How many amps does a 22 kW charger use?

32 A per phase on a three-phase supply.

What is the minimum current an EV can charge at?

6 A. This is the floor set by the charging standard (IEC 61851), and it is what dynamic load balancing drops to when the rest of the building needs the capacity.

Do more amps always mean faster charging?

No. The car’s onboard charger sets a ceiling, so a car limited to 7.4 kW charges no faster on a 22 kW unit. Check your car’s AC charging specification before paying for a higher-amperage installation.

Does an EV charger need its own circuit?

Yes. A dedicated circuit with correctly rated protection, installed by a qualified electrician, is the standard for a permanent home charger.

EV charger amperage summary

  • Home EV chargers draw between 6 A and 32 A
  • Single-phase: 16 A = 3.7 kW, 32 A = 7.4 kW
  • Three-phase: 16 A = 11 kW, 32 A = 22 kW
  • 16 A three-phase (11 kW) is common where three-phase supply is standard; 32 A single-phase (7.4 kW) is the norm in single-phase markets such as the UK
  • The car’s onboard charger, the cable and load balancing can all reduce the actual draw
  • On an amina charger, the maximum current is set through the connected smart charging provider’s app