This is my panel:
From below I have the phase coming from the grid provider - here is where the circuit is derived to feed also in my solar system (based on solaredge will have questions regarding this later)
From below I’m also deriving to a dedicated panel for EV charging (described earlier) and one of the phase is also supplying power to a different apartment (attico)
then I go up into the main breaker of my building, then the three phases are divided into 3 different differential protection
You can see also the actual configuration of the CT