Electrical Installation Seat Bench Window - Wall Outlet vs. Empty Conduit

Hello everyone,

we are currently working on the electrical installation in our extension (timber frame with 6cm installation layer). At one spot / window, a seat bay window is to be installed, meaning the seat with the corresponding enclosure will be built about 40cm in front of the finished wall. Naturally, some electrical work is also needed here (power, 2x feed lines for LED strips, Loxone feed line for switches and spotlights).

I am now faced with the question of how to implement the whole thing or how the electrical system of the seat bay window should be supplied.
Currently, I have 2 or 3 options in mind:

1.) Lay conduit on the raw floor
The conduit then comes out of the floor in the area of the seat bay window, and the cables are either routed directly to where they are needed or connected again via a surface-mounted box. Everything disappears in the construction of the seat bay window.
Advantage: Very flexible because the cables do not have to be pulled in yet (regarding lengths etc.), + a reserve could be planned / disadvantage: the conduit comes out of the floor and is open (but disappears behind the construction) – but what if the seat bay window is removed one day?

2.) Install flush-mounted distributor. Pull all necessary cables to it and then “jump out” from there into the seat bay window or its enclosure.
Advantage: You can pull everything there now and later proceed as necessary + a reserve could be planned / disadvantage: the later installation would be more or less surface-mounted + how do you get out of the flush-mounted distributor cleanly? Through the cover or just leave it open (behind the construction)?

3.) Pull cables with a buffer and work with outlet boxes
Meaning I would roughly pull all cables to where I think I will need them and lay them on the outside through outlet boxes in the wall. This way I would have clean wall outlets but am spatially somewhat bound – so I need to know exactly where which cable should go.
Advantage: clean wall outlets + boxes could later be closed with a cover and plastered over / disadvantage: little flexibility, it must now be clear where (height etc.) each cable is needed, you would have 4 outlet boxes in the wall.

Which option do you consider best / cleanest or maybe someone has an idea how I can solve the whole thing?
The question is how can I lead cables out of the wall as flexibly as possible. For me, a mix of option 2 and 3 would be perfect...

Cheers, Chris

I find it difficult to understand the problem, as I am not aware of the progress of the construction site. I also did not exactly understand where the burner points are supposed to be. Actually, the installation in the construction should be unproblematic if the location of the burner point is already planned and the light source has been selected – perhaps I am making a thinking error due to my lack of knowledge. How to use a wall outlet box and from there, with a cable – which I think – nicely reaches the burner point, I can suggest with a picture. The box is from Berker, the cable from Gi Gambarelli. We decided on this variant because the cable leads to a range hood hanging under a massive wooden ceiling, in which no cables can be installed.

I don't really understand the problem either. As with almost all electrical installations, you know where you want the lights and switches. I placed the switch normally on a wall and then routed the wiring (small spots above the seating windowsill) to where I needed it.

Thank you for your feedback... maybe I am making it unnecessarily complicated.


Do I understand correctly that the cable outlet is located on a standard 68 mm hollow wall box / terminal box? That means you run your NYM cable up to the box and from there continue with the final cable?

Once again on the problem description and the current construction status:
Currently, the installation level is still completely open. That means I could lay the cables completely freely.
What is not fixed, and this is where our situation differs from yours (perhaps due to lack of planning), is how the window seat is to be implemented (height, exact spot locations, etc...). This is also because it will not be a pure window seat but a window seat with an adjoining room divider.
For this reason, and because I have learned from my previous construction experience that plans only have a limited shelf life, I want to prepare the electrical installation now to be as flexible as possible afterwards.

I will try to make it concrete with an example:
Electricity. We want to integrate sockets "somewhere" in the window seat. Now I have to provide a corresponding supply line for this. In a perfect world, I would know exactly where the (at least the first) socket in the window seat will be placed finally and could lay the supply line up to that point. If I lay the supply line in the installation level, I still have to come out of the wall at some point.
That means either I lay the cable in one piece and exit the wall somewhere (with or without an outlet box), or I run the supply line up to a certain point (= terminal box) and then, for example, go outside via a cable outlet like the one from .

And the concrete question is how I can best prepare this. For example, using such outlet boxes or a conduit for later use.

If the installation phase is still open, then you simply run a "sufficient amount" of cable to a location behind the future bench seat. When the bench seat is then installed, the integration of the lighting and outlets into the bench seat takes place and everything is fine.

So you ran your NYM cable up to the outlet and from there continued with the final cable?

That's exactly how we did it.