Electrical Plan New Build Semi-Detached House Evaluation and Remark

I keep wondering what you’re supposed to do with 2 outlets in a child's room / bedroom?

Well, in our children's rooms we even installed four each (two double outlets in different places). But that’s mainly for flexibility. Otherwise, you should ideally do everything via cable that can be done via cable. In our case, that includes a computer and a smart speaker, but of course, it can possibly be expanded with a printer or similar. Who knows? Maybe your children will become IT specialists, then four outlets will be quickly occupied, and retrofitting is always more complicated.

In the bedroom, we only have one double outlet, in case a TV should be installed there someday – but currently it’s unused.

The TV would then be "left". I think there will be an access point in the garage towards the garden.

As I said: If you want coverage in the garden, then put the access point in the garden. However, I would also recommend placing the network outlet on the exterior wall, drilling from there outside, and then connecting the access point only with a patch cable. Network outlets don't like outdoor conditions that much, and patch cables are easier to replace.

And if it’s ever sold someday, the new owners should have the option to retrofit SAT quite easily.

I doubt that this could have any influence on a buying decision. And as I said: who knows if that will even be relevant by then, but of course it won’t cost a fortune to prepare for it now. We simply didn’t do it because we will never need it and thus also save space on the TV wall. There are already quite a few connections anyway...

My energy provider won’t allow me more “free”

Your energy provider won’t allow you more NOW – but that too can and probably will change. Therefore, I certainly wouldn’t see that as the final stage of expansion, and again it applies that such thick cables cannot be replaced easily without further ado. Also, especially with a weak grid, the ability to split power across multiple points is worth its weight in gold. Then either one box can charge with 11 kW or two boxes with 5 kW each. But that works best via proprietary communication between the boxes themselves.

For me, there are too few sockets, especially in the living room where the TV is located, and in the main bathroom. Living room: TV, Blu-ray player, AV receiver, possibly active speakers, set-top box (Sky, Magenta, etc.), game console, etc. In the new building, I would like to solve this without multiple power strips behind the furniture. In the bathroom: electric toothbrushes, oral irrigator, shaver, epilator, hairdryer, straightener, curling iron, etc. Bedroom: with bedside lamps, phone chargers, and possibly a radio, also too few. I would also always combine the light switches at the doors with a socket to make vacuuming easier.

The sockets are anyway determined during an inspection in the shell construction phase.

electric toothbrushes, oral irrigator, shaver, epilator, hairdryer, straightener, curling iron

But not all at the same time. ;) Besides, there may possibly be additional sockets in a bathroom cabinet. So far, at most two sockets have been used simultaneously here, so I basically do not see a major bottleneck in the kitchen.

My power connection to the house will be installed with a maximum of one wallbox with 11KW output. My energy provider won't "approve" more because there is still a heat pump running. Maximum output is 30KW. Therefore, only one wallbox will definitely be installed at my place.

Your energy provider DOES NOT approve more for you NOW - but that can and probably will change.

Probably not. He will have applied for a standard connection and will get 35mm² cable into the house. For the power he needs, he would have to go to 95mm², maybe 50mm² if his provider offers that. Here we only have 35, 95, and 150. I would definitely get in touch if multiple electric cars are being considered. Depending on what materials the provider installs, only the cable might need to be changed. That costs less than 10€ per meter net out of pocket. But it may be that the house connection box needs to be a different size because fitting the "small" boxes with 95mm² cables is anything but pleasant, although they could theoretically be used for that. In the end, asking costs nothing :)

I basically want to control everything necessary via Shelly. For that, I will have deeper boxes installed everywhere.

Have electronic boxes installed for switches. They are unfortunately absurdly expensive to buy, but it's well-invested money...

He must have applied for a standard connection and is getting 35mm² into the house. With the power he needs, he would have to go up to 95mm²

But then the distribution network operator would be quite short-sighted. Here, at least, 50 mm² are currently being installed as standard because it is foreseeable that this demand will increase, even if the actual network does not yet support this everywhere. Otherwise, it still makes sense to be prepared in the house so that in case of doubt only the entry point needs to be upgraded. Incidentally, even 35 mm² with 63 A already provides a good 43 kW for me, which will probably be sufficient, and it is also possible to secure higher, so I don’t see a big problem even if only 35 mm² are installed.