i have a power tool that requires a 240-110 transformer ,i need help with which transformer i need to buy?

February 23rd, 2008 | by admin |
mike r asked:

the power tool says max input 2.8 kva. do i need a 3kva transformer to run this tool or is a 3 kva transformer to big. can i buy a smaller 1 kva unit that will run the tool?

Question posted courtesy of: Valerie
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    1. 8 Responses to “i have a power tool that requires a 240-110 transformer ,i need help with which transformer i need to buy?”

    2. By Alex B on Feb 25, 2008 | Reply

      The max size transformer it is able to handle is 2.8 kva, so buy 2.7 or smaller. Definitely dont go over, it will burn your tool out.

    3. By Just_gone on Feb 28, 2008 | Reply

      3 kva. 1 kva will burn up.
      I am a journeyman electrician (ret).

    4. By JOHNNIE B on Feb 29, 2008 | Reply

      No u need to go bigger a 3kva should be ok normally they should take a 50% over load for a short time.

    5. By websterjdjr on Mar 1, 2008 | Reply

      2.8 is MAX input anythang larger than that MAY burn up the tool why not be safe and buy the exact replacement transformer?

    6. By Joe M on Mar 3, 2008 | Reply

      240v is single-phase 2-pole.

      110 is single-phase 1-pole.

      ‘Max input’ doesn’t make any sense though - it should be ‘maximum load’. If it is going to pull 2.8kva max (usually measured with a locked rotor) then you will need a 3kva to give you sufficient power.

      You might want to post more details - or contact me with them, and I can try to help you (or contact the manufacturer and see if they recommend a specific transformer - or at least give you the specs to be looking for).

    7. By turd on Mar 5, 2008 | Reply

      Minimum to use is a 2.8kVA transformer - and it will run hot. This is going to be a MONSTER transformer though.

    8. By tlbs101 on Mar 8, 2008 | Reply

      You should get a transformer rated for a load that is larger than the actual load, so the transformer won’t burn up.

      3 kVA is a good start. Something even larger would be a bit better, but those things are expensive when you start talking about 5 kVA and up. If you can afford a 5 kVA step-down transformer, I would get that.

      .

    9. By jairarodrguez on Mar 10, 2008 | Reply

      Use the 3 kva transformer. It prevents overcharges.

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