It is a little bit more complex.
Electricity is mainly distributed in 2 systems: 3 phase with a neutral and 3 phase without a neutral.
The first (3phases with a neutral) has 400V between the phases and 230V between a phase and the neutral. If this is lying into your street you could ask for a 3 phase connection and you can charge your car with 11 kW (3x16A) or even 22 kW (3x32A) at home. If they only want to connect you on one phase (and a neutral line) then you are limited to 3,7 kW (1x16A) or 7,4 kW (1x32A).
The second (3phases without neutral) is more complicated. Without electrical transformer, you can not charge over 3 phases. You can still charge on one phase like above, 3,7 kW (1x16A) or 7,4 kW (1x32A).
In some cases, but not many cars are supporting it, it electrical possible to charge on 2phases. One phase will be used as neutral, the 2 others as phases. You could then charge at 7,4 kw (2x16A which should normally work if you have a 22 kW charger in your car) or 14,8kW (2x32A), but the latest causes the biggest electrical problem for the charger in the car.
What is sure is that the distribution network isn't everywhere ready for electrification.
This will still cost a lot of money to upgrade.
Hopes this clarifies.