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  1. HenryKroll

    Running 3-phase motor on single phase

    We had a slight technical hitch.......Henry accidentally started a new thread instead of replying on this one. So this is the son-in-law again, giving him a bit of a hand. He always excuses his errors by saying "I'm just a boy - still learning". I've copied his reply from the new thread and it...
  2. HenryKroll

    Running 3-phase motor on single phase

    OOOPS I wasn't born yesterday nor in two years time! That birthdate should have read 1917. Henry
  3. HenryKroll

    Running 3-phase motor on single phase

    Thank you Gunnar Apprenticed aged year 16 Winding armatures aged 14 Birthday 30/4/2017 To everyone else Job 1. 3 hp vacuum pump 2800RPM star now delta Capacitors fitted one 60 three 30s MFDs Starts no problem. Runs enough revs. Motor gets fairly warm so using an external fan. Job 2. Not...
  4. HenryKroll

    Running 3-phase motor on single phase

    I think what I'm looking for is the 67mfd. I think I have condensers so can do a trial run. Any further comments are welcome. Thank you all for the responses. This is my first time on this forum and I love the response you have given. For the record, I am an ex-electrical engineer in...
  5. HenryKroll

    Running 3-phase motor on single phase

    How many mfds are necessary to run a 5hp 3 phase 415 volt motor on 240 volt single phase?

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