Lighting recommendation for roof overhang

If a joint was already planned there and the ceiling is made of reinforced concrete, then there really is no reasonable alternative to your suggestion.

I could have the joint plastered again if necessary. I had quickly planned it like that when concreting back then, or rather put a styrofoam strip there. I'll take a look at LED strips once 8m and once 6m. Could you say something about the supply line of the sub-distribution board? In which direction or cross-section would it tend to go? I am also currently thinking about the ventilation of the double garage (possibly decentralized ventilation with heat recovery). However, I’ll open a separate topic for that.

Could you say something about the supply line of the sub-distribution board? In which direction or cross-section would it tend to go? I am also currently thinking about the ventilation of the double garage (possibly decentralized ventilation with heat recovery). But I will open a separate topic for that.

Ask an electrician or calculate yourself. How much voltage do you lose at the targeted current over the distance? The cross-section is then determined accordingly. U = R * I.

I am also currently thinking about the ventilation of the double garage (possibly decentralized ventilation with heat recovery). But I will open a separate topic for that.

Most garage door openers have a ventilation setting. Why heat recovery in a garage? Premium cars or use as a party room?

Ask an electrician or calculate it yourself. How much voltage do you lose at the targeted current over the distance? The cross-section is then determined accordingly. U = R * I.

Yes, the electrician has to do that anyway. I was still interested in the calculation. I also saw a few online calculators where I enter three-phase current, 230V, cable length, 3% loss... and then a cross-section is calculated. But here I would need to know the "current [A]".

Most garage drives have a ventilation position. Why heat recovery in a garage? High-quality cars or use as a party room?

Maybe optionally a small party once or twice a year. But I think we will rather move out to the garden here, unless it rains. But heat recovery would not be necessary for that. I thought it might be better for the car or the garage contents? (Tools, e-bikes, e-car....) Because the fans with heat recovery shouldn’t be very expensive.

Yes, the electrician has to do it anyway. I would still have been interested in the calculation. I also saw a few online calculators where I enter three-phase current, 230 V, cable length, 3% loss... and then a cross-section is calculated. But here I would need to know the "current [A]".

LEDs are direct current! Not three-phase current or 230 V. You get the current over the length of the LED strip from its datasheet. It states how much current the thing draws at its operating voltage (e.g. 12 or 24 V). Or you place the power supply very close by, then it doesn’t matter at all.

Maybe optionally one or two small parties a year. But I think we will rather retreat to the garden here, unless it rains. But for that reason, heat recovery would not be necessary. I thought it might possibly be better for the car or the garage contents? (Tools, e-bikes, e-car....)

The garage is not as airtight anyway with a door as the rest of the house, so both ventilation and heat recovery are actually pretty irrelevant. Getting rid of humidity in winter could be a reason for ventilation. But heat recovery is nonsense, you probably don’t heat the garage like the rest of the house (i.e. underfloor heating etc.), and as I said, the door isn’t airtight anyway.

LEDs are direct current! Not three-phase or 230 V. You get the current over the length of the LED strip from its datasheet. It states what current the thing draws at its operating voltage (e.g. 12 or 24 V). Or you place the power supply very close, then it doesn't matter at all.

I was not talking about the LED strip, but generally about the supply line to the sub-distribution board (garage), starting from the main distribution board or meter cabinet (main house).

It was not about the LED strip, but basically about the supply line to the sub-distribution board (garage), starting from the main distribution board or meter cabinet (main house)

Then add your necessary and future appliances, e.g. wallbox, welding machine, electric heater, e-bike, garden pump, etc., and the electrician will dimension the supply line accordingly.