Here are some considerations:

1. Higher capacity: A 3-phase connection offers a higher capacity than a 1-phase connection. This means you can use more electrical appliances simultaneously without overloading the system. For example, if you want to charge multiple electric vehicles or use other heavy electrical appliances such as an electric hob, heat pump, or jacuzzi, a 3-phase connection can be advantageous.
   
   

2. Balanced load: With a 3-phase connection, the load is evenly distributed across the three phases, ensuring more efficient electricity use. This can lead to less voltage loss and a better energy balance in the electrical system.
   
   

3. Costs and availability: A 3-phase connection may involve higher installation costs compared to a 1-phase connection, as it requires additional wiring and possibly a different electricity meter. Moreover, not every house or building is equipped with a 3-phase connection by default, so you may need to contact the grid operator and potentially make modifications.
   
   

4. Specific appliances: Some heavy electrical appliances, such as industrial machines or large air conditioning systems, may perform better on a 3-phase connection due to the higher capacity and balanced load. If you use such appliances, a 3-phase connection may be necessary.

   
   

It is important to consider which electrical appliances you use and whether you need the higher capacity and balanced load of a 3-phase connection. Consult a licensed electrician to assess which connection is most suitable for your situation and needs.