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Motor Circuit Query

  1. Feb 15, 2014 #1
    Hi, I have a single phase ac motor system currently working at 2980rpm, 5.6 amp, 50 hz, 240v, efficiency 87% giving approx 1 horse power.

    Can I have a similar powered dc motor run off a 12 volt car battery. Can this be achieved inexpensively?

    Could I use an inverter for original system? Any info/suggestions appreciated.
  2. jcsd
  3. Feb 15, 2014 #2


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    Staff: Mentor

    Hi seamuscostello! http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

    One horsepower is 746 watts. At 12v that equates to drawing well over 60 amps from your battery. Your battery will be flat within a minute or two, and probably damaged. Sorry, it was a good plan though.

    How long would you be needing to run a 1 hp motor before recharging the batteries?
    Last edited by a moderator: May 6, 2017
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