They're like that in this apartment we're renting and I keep seeing them elsewhere. I don't get it.

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[–] 5 points 2 years ago* (last edited 2 years ago)

By that logic, Europe should be labeled with 400 V, as this is the voltage between any two of the three 230 V phases connected to each household.
It is commonly used to power ovens or instant-on water heaters (Durchlauferhitzer, not kettles). Crafts, industry and even some households have IEC 60309 5-pin connectors for movable heavy gear.

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