So for me, the home manufacturer covered the additional costs after I was able to show that the standard is just a standard and not a law... But no electrician could be found who would install it without it.
The DIN VDE is legally anchored. Look at the laws.
[*]Low Voltage Connection Ordinance § 13
[*]Energy Industry Act § 49
Could you send me a picture of your distribution box?
Now I almost forgot again, here are two pictures of what it looks like inside the distribution cabinet. The fuses next to the arc fault circuit breakers are then simply divided among the different rooms/devices.