In Spanish and Italian homes with low contracted power, the key is to charge at a current the supply can carry alongside the rest of the house, and to charge mostly at night. The EV-ACS3210E can be set as low as 10 A, about 2.3 kW, and scheduled through its app for off-peak hours. If you need faster charging, ask your energy supplier about increasing contracted power and have an electrician check the installation.
Key Takeaways
- Set the charger current to fit your contracted power.
- Charge at night when other loads are off.
- Load balancing adjusts current automatically.
- Raising contracted power has a cost; compare first.
What Contracted Power Means
In both countries, households agree a maximum power with their supplier. If total demand goes over that level for long enough, the meter limits or cuts the supply. Many Italian homes have a contracted power of around 3 kW, and many Spanish homes have a few kilowatts, so check the figure on your bill. A 7 kW charger running alongside an oven or washing machine can exceed that easily.
Matching the Charger Setting to Your Contract
Approximate power on single-phase 230 V:
| Setting | Approx. power | Suits |
|---|---|---|
| 10 A | 2.3 kW | Homes around 3 kW with other loads off at night |
| 13 A | 3.0 kW | Night charging with very little else running |
| 16 A | 3.7 kW | Contracts of about 4.5 to 6 kW |
| 20 A | 4.6 kW | Contracts of about 6 kW and above |
| 32 A | 7.4 kW | Larger contracts and a dedicated circuit |
These are starting points. Your electrician should confirm what the circuit and contract allow.
Charge at Night and Avoid Overlaps
- Schedule charging for hours when cooking, laundry and air conditioning are off.
- Use the app’s schedule to start after your cheaper time band begins, if your tariff has one.
- Keep the setting conservative on hot summer evenings when air conditioning runs.
- If the supply trips, lower the current one step.
Even at 10 A, eight hours adds about 18 kWh, roughly 90 to 120 km of driving for many cars, which covers most daily commutes. Read how many amps a 7 kW charger uses for the conversion.
Load Balancing and Raising Contracted Power
A load-balancing system measures total household demand and adjusts charging current automatically, so you can charge faster when the house is quiet. The EV-ACS3210E product page lists dynamic load balancing support; ask what extra measuring hardware your setup needs. See dynamic load balancing explained. Raising contracted power is another option, but it may increase the fixed part of your bill, so compare the cost with simply charging slower.
The EV-ACS3210E is a Type 2 portable charger adjustable from 10 A to 32 A in six steps, with app control, energy monitoring, OCPP readiness, an IP65 rating and a 7.5 m cable.
Frequently Asked Questions
Can I charge an EV on a 3 kW contract?
Yes, at low current and mostly at night when other appliances are off. Expect slower charging.
Why does my power cut out when charging?
Total demand is exceeding your contracted power. Lower the charger current or avoid running large appliances at the same time.
Should I raise my contracted power?
It allows faster charging but may raise fixed charges. Compare costs with your supplier first.
Related Reading
- How Many Amps Does a 7 kW Charger Use? Single-Phase and Three-Phase Answers
- What Is Dynamic Load Balancing, and Why Does Your Wallbox Home Charger Need It?
- Single-Phase vs Three-Phase EV Charging: 7kW, 11kW and 22kW Explained
- Smart Charging and Time-of-Use Tariffs: How Scheduling Cuts EV Charging Costs
