ᐅ Mini LED downlights for patio roofing

24 V, then for the same power, the current is lower, and you can possibly use a smaller cross-sectional area. Ideally, use copper cables with insulation and as many conductors as needed. The cross-sectional area is determined by the current running through the cable.

FrankChief schrieb:

@wiltshire
so use 24V lights and then select the appropriate transformer accordingly
they also have a set with 12V
you specify how many lights you want and the transformer is included
in the photo that is a 12V transformer

I would either go for a set or use the transformer/driver recommended by the supplier.
With a 12V set, you can assume everything is properly matched. You then have more than just one transformer/driver. Both options work. I would prefer a 24V transformer/driver. Compared to multiple 12V units, you wouldn’t notice any difference visually.