ᐅ Future fiber optic connection – telecom provider

Hello, I hope this is the right section here. First of all, thanks for the great forum, I have already found some helpful information just by reading along.

Now I need some specific help because I can’t find a clear answer to my question.

Our house is currently under construction. A multi-utility house entry point is available. I have already ordered telecom services, with installation planned for summer.

Do I understand correctly that I need to have an empty conduit (DN 75mm (3 inches)?) installed for the copper connection? Or should it be a larger conduit?

Fiber optic is not yet available in our area (developing country Germany ). Do I need to install an additional empty conduit for a possible future fiber optic connection (so two conduits in total)? Should this also be DN 75mm (3 inches)?

I couldn’t find clear information on the telecom provider’s website, and I’d rather not rely on their hotline since there have been many negative reports.

Thank you in advance for any answers!

Best regards!

Glass fiber can later be pulled through these conduits together with the copper or instead of the copper. Ideally, use kabuflex 75 and include a new pull wire when pulling in the copper cable.

I also installed an empty conduit from the multi-utility entry point to the front of the property, towards the street. Naturally, it’s the same diameter as the pipes from the multi-utility entry point, which I believe were DN75. These are socket-jointed there.

You can then push the copper cable through it, and when the time comes, fiber optic can go through as well. This way, you won’t need a second empty conduit.

Ok, someone was faster.

One more note about the pull wire. You don’t have to pull it through right away. I installed conduit pipes for all the cables throughout the house. For the ones on the floor, I pulled the cables through immediately. For those embedded in the concrete ceiling slab, of course, it was done later. You can easily use a mason’s line for that. Make a loop with it, tie a piece of paper to it, hold it at one end of the conduit, and use a vacuum cleaner at the other end. The line passes through relatively easily.

But not for DN 75
For that, you need a vacuum cleaner of the brand "Orkan 3000" with an additional adapter and duct tape.

Either use the old copper cable to pull the glass sleeve through, or the second pull wire. For overlay (meaning double installation), you don't want to cut the copper.

I would like to thank everyone for the very kind and well-informed responses.
So, I will have a DN75 pipe installed at the same time, and that should be fine.
You have been a great help.