Electrical installation, network & satellite cables in empty conduits?

Hello everyone,

I have a question about the electrical installation, the network and satellite cable wiring.

Is everything usually laid in empty conduits or not the electrical, but the network and satellite cables in one conduit? I have already read in construction blogs that you can also pull the cables yourself later through an empty conduit.

How is it generally with empty conduits? Could I later pull a second/third cable besides the network cable through an empty conduit – for example, in the living room to set up Dolby Surround speakers?

What options are there, what makes sense? What do you think is sensible?

Best regards
Oliver

Separate. Besides future security, separation is the reason for the empty conduit. Even later it is fiddly, but possible.

Electrical wiring does not have to be installed in conduits, but it always makes sense under screed; in case of a defect, you can just chisel open the plaster on a wall, but having to remove the screed and underfloor heating is unnecessary.

I would always install Sat and network cables in conduits, as well as audio or other gadgets, but for Dolby you need separate routes anyway.

Pulling a second cable through a usual 20mm conduit is quite challenging to impossible, but it can be done (somehow). If you can avoid it, I would avoid it.

SAT/network/audio/etc. in empty conduits.
Electrical wiring under the screed in empty conduits, and from the transition to the wall there under plaster without empty conduit.
Pulling through, if space is available, by attaching a pull string to the old cable, pulling out the old cable (= pulling the pull string through) and then pulling the new cable or two new cables back in with the pull string.

If there should be something wrong with the electrical cable, the plaster would have to be chipped off, reinstalled (over empty conduit under the screed) and then the spot replastered or filled. As far as I know, this is not a major problem with common gypsum plaster.

This is my knowledge regarding the usual methods.

SAT/network/audio/etc. in empty conduits.
Electrical wiring under the screed in empty conduits, and from the transition to the wall there under plaster without empty conduit.

I wouldn’t generalize like that. There are plenty of electricians who run the empty conduits directly into the boxes, meaning putting an empty conduit into the wall chase.

--> : You have to arrange that with your electrician how he does it or how you want it.

For network, SAT, etc., I would use 32 mm empty conduits in your place and not 20 mm.