Here, all new construction 1-family houses since 1973 or so (oil crisis) are required to be 3x10mm
2+10mm
2 and 35A capable. Three-phase. Frankly, I'd be really cross with the power utility if my voltage was down at 265V. Hovering around 400 is more like it.
We live close to a water tower, which has a priority power requirement, so we're very well connected, due to sharing the transformer with the water tower.
I just got a new, smart meter, same style as in Netherlands. The law here is crystal clear; the power utility owns the meter and can swap it as they see fit.
With this meter generation, the ability to measure power both ways is introduced. I can get one reading per second locally too, if I connect the right gadget. Which I will.