The difference between single-phase and three-phase charging lies in the number of phases on which the power grid is based and how the electricity is delivered to the charging station.

In a single-phase power grid, electricity is delivered through one phase. This is the most common type of power grid and is used in most homes and small businesses. Charging stations connected to a single-phase power grid can deliver electricity with a charging power of up to about 11 kW.

In a three-phase power grid, electricity is delivered through three phases. This type of power grid is more often used in larger businesses and industrial buildings and offers a higher capacity for delivering electricity. Charging stations connected to a three-phase power grid can deliver electricity with a charging power of up to about 22 kW.

The difference in charging power between single-phase and three-phase charging can be important if you are considering purchasing a charging station for your electric vehicle (EV). If your EV requires a higher charging power, such as 22 kW, it may be necessary to purchase a charging station connected to a three-phase power grid, rather than a charging station connected to a single-phase power grid.