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

February 23, 2008 By: admin Category: power tools

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

  1. # 1 Alex B Says:
    February 25th, 2008 at 5:07 pm

    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.

  2. # 2 Just_gone Says:
    February 28th, 2008 at 2:57 am

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

  3. # 3 JOHNNIE B Says:
    February 29th, 2008 at 7:36 pm

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

  4. # 4 websterjdjr Says:
    March 1st, 2008 at 7:27 pm

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

  5. # 5 Joe M Says:
    March 3rd, 2008 at 4:04 am

    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).

  6. # 6 turd Says:
    March 5th, 2008 at 1:02 pm

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

  7. # 7 tlbs101 Says:
    March 8th, 2008 at 11:27 pm

    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.

    .

  8. # 8 jairarodrguez Says:
    March 10th, 2008 at 7:51 am

    Use the 3 kva transformer. It prevents overcharges.

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