ᐅ Pre-drilled Holes for Recessed Lights: Any Experiences?

These prefabricated mounting boxes, such as the Kaiser HaloX, have a slightly larger diameter than the spots actually require, so that after the ceilings are installed, the electricians always have some room to adjust and align the spots in a straight line.

@Allthewayup Many thanks for the picture. Which exact model from Kaiser is that? There are also versions with a "side panel" for a transformer. Is that still necessary nowadays?

Another question: Why is one of the walls not built all the way up?

Stein2023 schrieb:

Another question: Why is one wall not built all the way up to the top?

It is probably not load-bearing. To ensure the wall does not accidentally become load-bearing, it is either fully built only after pouring the ceiling slab or the top course is left out and added later.

@Allthewayup

Wow… impressive… 8 spotlights in what seems to be a relatively small area. I have 3 installed in the bathroom in a row and already find that quite bright with just 3. The general contractor’s electrician wanted to install 5 arranged like the 5 on a die. Luckily, I didn’t go for that. It would have been like a floodlight.

These are the Kaiser Halox 1282-74 with a diameter of 180mm (7 inches). In the hallway, we have slightly smaller ones, but 250mm (10 inches) in diameter with correspondingly larger (and more powerful) LED spots. In the bathroom shown in the photo, there are a total of 10 spots, although 2 are not visible. The walls were not built up high because this is the shower/toilet partition. This allows the steam to escape better from the shower area and prevents the corner from remaining permanently damp.

*Edit:
The spots are divided into 4 circuits, which matches our idea of room usage and may only apply partially to other situations.

I almost missed the question about the transformer. It depends on the type of lights being used. I'm not an expert in this area and consulted with an electrician. In our case, no transformers were installed, so we only have the junction box without an additional conduit.

We also deliberately installed a few extra recessed lights in the bathroom in case we want to add ceiling speakers later on. We did the same on the ground floor. Retrofitting recessed lights is nearly impossible, and the cost during the rough-in stage was really minimal.

Edit*
They are also dimmable.