Planning electrical systems to be future-proof

Rj45 connectors cannot handle the speed possible with cat7 cables, just for your information in case it should be a bit cheaper. Whether he installs all your components is a good question... if yes, okay, ours would probably have rejected the power strip and sold a single individually fused socket, to which a distributor can then be connected.

Rj45 connectors cannot support the speeds possible with cat7 cables, just for your information in case you want something a bit cheaper

Oh, tell me more about that… which speed do you mean?

1. Network cabinet: Either the HMF 65709 (unassembled) with 51 x 40 x 45cm with 9U for 70 euros or the Digitus network cabinet "Dynamic Basic" with 45 x 60 x 50.5 cm with 9U for 100 euros

I do not know these two products. When I planned my network cabinet back then, I calculated how much space I needed and made a sketch for it. On the one hand, I wanted a very tidy cable management (for which there were two brush strips of 1U each) and enough space for a Synology NAS (and the Fritz!Box), which I could place on a shelf. In the end, I decided on 12U. Once the patch panel is installed with the installation cables, most people will never want to change it again. Therefore, a little more space would be more future-proof.

This is how it looks like for me now:

2. Patch panel for keystone modules: HB-Digital 24-port shielded patch panel for 24 euros

3. Power strip: Brennenstuhl 8-way with surge protection for 32 euros

Both sound good.

I ask the electrician to use Cat 7 cables or alternatively to provide them himself (he probably won’t want to). Then he should install the cabinet in the technical room near the telecom entry, hang the keystones on the patch panel and make a list which number belongs to which installation cable.

Yes, I think CAT7 should be standard for any electrician nowadays. I even had Cat8 including Cat8 keystones installed at my place. But for most people, the extra cost is not worth it.

A proper labeling on the patch panel is absolutely recommended. If necessary, it can also be done later or made nicer.

It will be DSL at first. Our municipality will complete fiber-optic expansion for every household in these weeks, but that will probably be too early. Then the DSL cable has to go from the house connection to the Fritzbox in the network cabinet, right?

There are different possibilities; in principle, the DSL signal can also be transmitted via two Cat7 cables, so that you could operate the Fritz!Box at a completely different location. But if you have the freedom, I would have the electrician run a line from the house connection to your network cabinet.

Our electrician also installed a TAE socket for the incoming line in the rear area of the network cabinet. From there, I could connect the Fritz!Box directly:

Rj45 connectors cannot handle the speed possible with cat7 cables, just as information in case it should be a bit cheaper

I don't understand that. What do you mean by this? For example, I use Cat8.2 cables and Cat8.1 keystone modules. With the usual Cat7 cables, you use Cat6a keystones and can easily transmit 10 Gbit/s -- provided that the components at both ends are designed for it at all.

Exactly that, basically

Cat7 can, as far as I know, support up to 40gbps but rj45 only 10 and realistically probably only 2.5gbps
Gg45 is downward compatible but it will probably take a while before 10gbps is needed internally in the house, you might as well install fiber optic right away...

Empty conduit is, I think, more important than whether it's cat6 or 7 or 8 (shielding aside)

Cat7 can, as far as I know, go up to 40gbps but rj45 only 10 and realistically probably only 2.5gbps Gg45 is downward compatible but before you need 10gbps internally in the house it will probably take some time, you might as well just install fiber...

Then don't confuse people with half-knowledge. At the level this thread operates, the "limitation" of RJ45 will never be relevant. RJ45 is not a specific connector but a form factor. There is also RJ45 for Cat 8.1. 10 Gbps over copper works perfectly fine in the house with completely normal, good RJ45 connectors. 10 Gbit is easily exceeded there. In practice, it then rather depends on end devices that can (or need to) handle such data volumes.