I don’t think overprovisioning is a thing that is realistically is a problem in the U.S. or in Germany. I know that modern homes tend to have 300amp mains. Older homes 100amps. You would have to have a house that was wired in 1920 in order to have a 20amp mains available. In that case you have bigger issues safety wise.

Ohh! I spent some time in the U.S. and there are 230v mains available. They just have special plugs. All homes have 230v. It’s just not available through the shocked face plug.

https://youtu.be/jMmUoZh3Hq4

The way that it works in most countries is that the breakers are per circuit in your wall. The breakers trip in order to prevent that single circuit from overheating and starting a fire in your walls.

Let’s say you have a wire that’s rated for 16amps. More than that and it becomes a fire risk just threw overheating. @230v that gives you 3680w per circuit.

If you have your industrial microwave, water heater, and car charger all going at the same time on that same circuit. This will draw way more than 3680w and thus would go over that 16a limit.

The breakers trips once you go over that 16a limit for safety. It’s a good thing. This all being said no sane electrician would put those three things on the same circuit. lol.

Circuit breakers are actually what enable you to safely over provision. Without them fires would just be a matter of time.

I know it works this way in the U.S. and Germany at least.

Out of curiosity how is life without systemd better? What does it taste like?