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Heat-pump water heaters are a winner for the climate — and your wallet (www.canarymedia.com)

submitted 10 months ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 10 months ago (1 children)

https://www.worldstandards.eu/electricity/three-phase-electric-power/

German 3-phase is at 400V, there is no such thing as 2-phase (you're probably thinking of split phase 110+110 as in NA). So I'd be practically certain your parents have single phase 230V.

[–] [email protected] 1 points 10 months ago

between neutral it's 230V.Between two phases it's 400V.