Sometimes I have sub voltage problem in the equipment that work with 220V, one of the phases fails, instead of 220V (110V + 110V) I have 180V (110V + 60V) or 110V (110V + 0V). Them the refrigerator engine does not start, which generates over heating by successive attempts to start.
I think if the Pow R2 has min power then it could have min voltage.
Fernando Koltun
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