What kind of wild slot routing is this? I’m not really skilled in these things, but don’t people always make slots, i.e., electrical conduits, at a 90° angle? No one would be able to find the path here if something should break.
Concrete can be milled. But it is more expensive and complex. So normally, meticulous electrical planning is required and the empty conduits and boxes are grounded and cast in at the same time. In the technical rooms, surface-mounted.
This is a temporary kitchen (Teeküche)... They actually wanted to install it already, but during the construction process we decided against it and will do it within the next 5 years or if we ever divide the house. The remaining pipes and lines are all laid "normally" (I hope ops: ).