[orangewindies]

> > EU 400V (380V) is 3 hots, neutral and ground.

> Three phase 230/400: 400V is line (hot) to line with 230V line to neutral. More for industrial use but I hear some homes can have this service for whatever reason.

It varies from country to country in Europe. In the UK you'll almost never find 3-phase in a home, in Sweden even apartments usually have 3-phase supply. In my Swedish apartment the only thing connected to more than one phase is the induction hob.