How does an asymmetrical load occur: The German and largely the entire European power grid works with 3 phases, which are referred to as L1, L2 and L3. Most ultimate consumers such as computers, hairdryers and irons only need one of the three phases to work
Many electric vehicles can only charge with one phase. But there are also vehicles that have a three-phase charger. They can charge single-phase or three-phase. Since single-phase charging vehicles are charged on L1 by default, the building connection may be exhausted while there is still capacity left on L2 and L3. The load is distributed asymmetrically across the three phases. A load management system can compensate for this unequal load.