I don't know about Switzerland, but here in France, if you don't have electrical heating, it's quite uncommon to have more than a 6kW line to your home. And you

I don't know about Switzerland, but here in France, if you don't have electrical heating, it's quite uncommon to have more than a 6kW line to your home. And you can't easily get a fatter pipe. My parents' house has a 6kW line and could maybe get 9, but very likely not above.