Empty conduits from the house to the garden / Tips

Another question in this context: Are DN25 empty conduits sufficient for Duplex-Cat7 or should I rather take a larger diameter? Would be additional costs because of the builder...

Better DN32, it just pulls easier, especially around multiple bends/curves.
If the surcharge is too high (what does he want for those few cents of extra material), DN25 also works. It’s his job to pull the cables through there – right? If he only installs the empty conduits and you have to pull yourself, then certainly better DN32. And: Take lots of photos during the construction phase (bending radii, where which cables come from, etc.)

P.S. Empty conduits are only called empty conduits as long as they are empty, as soon as there is a cable inside they are called protective conduits :cool:

you would have to seal it anyway (in a botched way)

I closed it by stuffing insulation wool in from the basement and filling the pipe with sand from the garage.

:cool:

and what if water gets in there? Then you have it in the basement.

The pipe extends 10cm out of the floor in the garage. If the water ever reaches that high, I have a completely different problem :-)

If a pipe is flush with the floor, I would use well foam.

Unless the pipe becomes leaky in the middle - for whatever reason.

Better DN32, it just pulls through better, especially around multiple bends/curves. If the surcharge is too high (what does he want for a few cents more material), DN25 is also fine. It's his job to pull the cables through there - right? If he only lays empty conduits and you want (have) to pull the cables yourself, then certainly better DN32. And: Take lots of photos during the construction phase (bending radii, where which cables run, etc.) P.S. Empty conduits are only called that as long as they are empty, if there is a cable inside they are called protective conduits :cool:

Thank you very much for this tip. When I look at the electrical installation in my house (all cables - except for the underground cables going outside) lie on the concrete floor in plastic conduits, but will I ever replace a cable here? I don't think so, as I have so many bending radii that I can actually rule that out.