On Friday, February 3, 2017 at 10:59:01 PM UTC-6, Electric Comet wrote:

i see used phase converters for sale once in a while and they all were
expensive


Probably makes sense. Phase convertors are only used by small shops who do not have access to real 3 phase power from the utility company. Big shops and commercial operations get 3 phase power for their machinery direct. No need for a phase convertor. Its only the little guy who needs them. So small demand and small supply. And if a little guy gets a 3 phase machine, he HAS to have a phase convertor. There is no other option. Otherwise his bargain basement cheaply bought magnificent 3 phase Martin or Altendorf table saw is just a big paper weight. He has to buy a phase convertor at any cost or his $10,000 Martin is worthless. And his $12,000 SCMI shaper is worthless too.