Differences between single-phase and three-phase loads: Which is best for you?

When installing a charging point for an electric vehicle, one of the key decisions is whether to opt for a single-phase or three-phase charging system. This choice has a direct impact on charging speed, energy efficiency and installation costs.

To make the best decision, it is essential to understand how they differ and what advantages each option offers.

What is single-phase charging?

Single-phase charging is the most common type in homes and small electrical installations. Its main features are:

Maximum power: Up to 7.4 kW (depending on the installation).
Ideal use: For charging a car at home, for example overnight.
Compatibility: Suitable for most homes with a standard electricity contract.

Advantages of single-phase charging

Lower installation cost: Most homes already have a single-phase installation, so no modifications to the electrical infrastructure are required.
Perfect for the home: If the electric car is mainly charged overnight, the power of up to 7.4 kW is perfect for restoring daily range.
Lower energy demand: In most cases, it does not require any changes to the electricity contract or the electrical installation.

What is three-phase charging?

Three-phase charging uses a more advanced connection, commonly found in industrial and commercial buildings, as well as some homes with a high contracted power supply. Its features are:

Maximum power: Up to 22 kW (depending on the installation and the charger).
Charging time: A car with a 50 kWh battery can be charged in around 2 hours.
Compatibility: Requires a three-phase electrical installation in the home or premises.

Advantages of three-phase charging

Faster charging: By offering higher power outputs, it significantly reduces charging times.
Greater energy efficiency: It distributes energy more effectively across the electrical installation, preventing overloads on a single phase.
Ideal for businesses or vehicles with a long range: Commercial fleets or users requiring fast charging can benefit from this technology.

Which option is best for you?

Single-phase charging is ideal if…

• You use your car for daily commutes and can leave it charging overnight.
• You don’t want to make any changes to your home’s electrical installation.
• You don’t need ultra-fast charging times.

Three-phase charging is best if…

• You need to charge your car in the shortest possible time.
• You have a three-phase installation or are willing to have one fitted.
• You have more than one electric vehicle or need to share the charging point with other users.

IRIA chargers: Tailored to every need

At IRIA, we design our chargers to deliver the best charging experience, whether for single-phase or three-phase systems.

• Optimised charging: We adjust the power output to match the installation’s capacity.
• Full compatibility: Works with any electric car model on the market.
• Smart technology: Enables remote management and the scheduling of charging times.
• Guaranteed safety: Protection against overloads, voltage spikes and electrical faults.

If you’re thinking of installing a charging point and are unsure which option to choose, our team of experts can advise you on finding the best solution for your home, your car and your usage habits.