ᐅ How many conduits are advisable to install when pouring the foundation slab?

Hello,

The telecom and power lines enter my house through PVC conduit pipes, and the potable water comes in via a flexible hose.

A few meters away from the point where these lines enter the house, there will be a cistern with a pump. Is it possible to pull the electrical cable through together with the telecom and power cables? In that case, would two PVC conduit entries be sufficient? I am also planning to install an additional PVC conduit on the opposite side of the house to create another access point. All conduits will be DN 100.

Does this sound appropriate? Are there any alternative suggestions?

Thank you!

There are special multi-utility house inlets, which are actually standard nowadays.
KG pipes are no longer allowed by many utility providers; I would suggest checking this to avoid potential damage to the foundation slab.

There are no specific requirements for this here.

I already mentioned it in the other thread: Enso installed a power pedestal at the property boundary. Therefore, there are no requirements on how to bring the electricity into the house. The telecom company allows both options, meaning a multi-utility connection and a basement connection, and the drinking water is supplied through a (green) flexible hose provided by the company contracted by the municipality.

I always wonder how you manage to make all the PVC pipes watertight...

I can hardly believe there are still areas where utility providers accept KG pipes. It’s fine for the land, but when passing through the wall, a multi-duct with seals is used.
Many utility providers also prefer separate pipes.
So electricity, water, possibly gas, possibly cable, possibly telecom, possibly a reserve for future fiber optic. Additionally, there are lines you will want to run back out, like power for lighting, water for irrigation (if there is no cistern), and so on...
As blackm88 has already pointed out: KG pipes cannot provide a watertight penetration. No matter how many topics you bring up, the answer will remain the same —> multi-duct instead of KG.
It’s best to have a separate pipe for each medium/function within the duct, whether required or not.
Enso refers on their website to a “plastic armored conduit” from the supply pillar to the house. So no KG pipes. Your utility provider does care.
I didn’t even know that such box or pillar installations still exist. At first, I thought it was a wallbox for an electric car. The connected load roughly matches.
From the medium voltage connection onward, “pressure-tight penetration systems” are required.

Haven't you already started an almost identical thread?
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