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Actually, I was (partly) right. In Germany, they run with 400 V, I just googled it.

Never heard of this. I though 360 with 3 phases.

In most of Europe (which runs a shared grid), not just Germany, it's 230V between any two of the three wires and 400V on each line:

> For example, in countries with nominal 230 V power, the line voltage is 400 V and the phase voltage is 230 V. https://en.wikipedia.org/wiki/Three-phase_electric_power

In the counter integrated induction simply gets connected with all three phases, which are available in-house anyways.

Between phases, it is 400 V; between phase and neutral, 230 V. There are five "lines": three phases, one neutral and one ground.