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Re:Major breakthrough on nuclear fusion energy by kuschku on Wednesday February 09, 2022 @05:36PM (#30279573)
400V is only used for stoves or instant water heaters, but e.g. our stove uses 11kW actually.

If you don’t have these amounts of energy available, the temperature your instant water heater can reach or the speed with which you can cook obviously suffers (which I suspect is one of the reasons why americans prefer gas stoves so much).

Re:Major breakthrough on nuclear fusion energy by xxs on Wednesday February 09, 2022 @06:28PM (#30280265)
the 3phase is used for motors - a lot more efficient (and the better power factor) than the single phase ones.
Re:Major breakthrough on nuclear fusion energy by kuschku on Thursday February 10, 2022 @05:29AM (#30284462)
For industrial applications definitely, but at home there's few people who power motors with triphase or five phase power.