Power Tools Q&A

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.