Hello Danvane,
these are of course very valuable information for me! Great!! Thank you! The square meters are roughly comparable and the requirements seem to be as well. Did you build with a basement?
I still have a few questions:
- Why did you do it through an (external?) system integrator? Couldn't the electrician do it himself or is that generally recommended?
- How did you find the right SI? Were you satisfied?
- Does a double socket count as one or two sockets? Probably a stupid question...
- What exactly do you mean by connection of all sockets?
- What is a 19-inch rack?
- Did you also run power to the garden (outdoor lighting) and to the garage (possibly preparing an e-charging station)?
- Are we talking about 40k net or gross?
We built without a basement.
- For the electrician, in this case, it was actually the first KNX installation in the single-family house sector (he himself has only been self-employed for about 2 years). The good thing was that he was very open to this topic and also enthusiastic about the project in order to develop himself further and be better prepared for installations of this kind in the future. He himself assumes that KNX will increasingly come his way, which has been confirmed by two further enquiries in recent months.
Of course, he was not able to carry out the planning on his own because of this. Since I did not trust myself to do the planning (which included creating the entire circuit diagram, so that the electrician "only" had to pull the cables), I looked for a SI and found one through the relevant KNX forum near me. Surely there are differences here as well, but my SI was worth every cent. From planning to switch cabinet construction (I was allowed to procure the materials myself) to comprehensive support during construction, he covered everything. We were really lucky with the choice here. Of course, the interfaces between the electrician and the SI (e.g. switch cabinet construction) must then fit.
- A socket requires one "hole" in the wall. Two sockets side by side ("double socket") naturally require two holes. Accordingly, a double socket is also somewhat more expensive because two holes are needed (more effort for the electrician). But the cable has to be pulled there anyway for the one socket. So if you make a single socket into a multiple one, the effort is basically only a bit higher due to the extra hole drilling (a bit more wear on the tool), so multiple sockets are almost always recommended if a socket is planned there anyway.
- Connection of the sockets: By that I mean that we connected sockets, LAN, and SAT ourselves. That is, we took the cable that the electrician had laid in the installed sockets and connected it to the interior of the mentioned components, then screwed on the visible cover. But not every electrician agrees to do that. We have electricians in the family, so in the end, only a check by the electrician was necessary. There was corresponding trust. As I said, it is not common that the electrician necessarily agrees to do this.
- A 19-inch rack is a cabinet in which, among other things, switches, patch panels, routers, and in my case, e.g., the multiswitch for SAT fit. Simply a good way to keep all these components neatly organized in their place.
- Power outside was also installed, yes.
- Gross