ᐅ Empty conduits from the house to the garden / Tips

Hello everyone,

I have installed an empty conduit DN50 (2 inches) from the utility room to the garden.
Electricians are currently installing the distribution cabinet and wiring the cables.
The screed contractor is scheduled to come next week.

Question: Should I pull the cables from the utility room to the garden now?
The electrician told me that I can also run the cables to the outside at a later time, possibly routing them through a cable duct. So the empty conduit would be cut off at floor level after the screed is applied.

A silly question: Shouldn’t I seal the conduit, for example to prevent pests or something similar? Sorry, but maybe I’m missing the logic here.

You can also put a cap on the empty conduit. 😉 Otherwise, you would probably first lay the desired cable inside and then seal it somehow—most likely with well foam or something similar. Additionally, there are special systems designed for this purpose, but they are probably much more expensive than a simple conduit and some foam.

My electrician doesn’t want to install an empty conduit to the garden, only the cables directly...

Another question related to this: Are DN25 conduits enough for duplex Cat7 cables, or should I go for a larger diameter? It would mean extra costs because of the developer...

squier23 schrieb:

My electrician doesn't want to install a conduit pipe to the garden, only the cables directly...

The conduit pipe is usually installed by the shell builder. 😉

For us, the cables were only routed outside, and a protective conduit was used only outdoors. Inside, it was sealed with a rubber gasket. You would have to seal an empty conduit anyway (in a makeshift way), which would negate the whole purpose of having an empty conduit.

Until you actually use the conduit, you can seal it from the outside with a blanking plug. This prevents drafts and keeps pests out. We also have a conduit running from the basement to the garage. In addition to cables for electrical power, high-voltage wiring, and lines for the exterior lighting of the garage, which is connected to the exterior lighting of the house, a 3/4 inch (19mm) water pipe also runs through the conduit. I sealed it by stuffing insulation wool in from the basement side and filling the pipe with sand from the garage side.