New construction preparation for future experiences

Laying cables later through corrugated pipes is, depending on the length of the pipes and if there are multiple bends, difficult to impossible. If possible, it is best to lay smooth pipes with a sufficiently large diameter and pull a draw wire in directly. This makes it easier/faster for the electrician afterwards and therefore more cost-effective.

Do I then have to use the rigid pipe and work with a corresponding number of angles, or are there flexible hoses without corrugations as well?

There is also "flexible" tubing that is smooth. However, it is somewhat more difficult to install because it is stiffer due to the lack of ribbing. (Comparable to the plastic tubing used for underfloor heating). I only ever installed it with a small diameter during my time as an electrician. No idea if that would be sufficient or if it exists in larger diameters.

Which route are you talking about? Use a ribbed 32mm cable conduit, which is also available with an inner coating, and the people installing a photovoltaic system can easily lay their two cables inside it, as long as it doesn't involve 8 corners. It is important that the radius doesn't get too tight anywhere, and there are various types of pulling aids.

Thank you for the answers!

I will see what I can still buy shortly and hope that it is not too late yet.