Step up transformer size for 4HP 180V 12.5A treadmill motor from India to US use

I want to use a treadmill bought in India here in the US. The motor is a 4HP, 180v 12.5AMP motor. What size of a step up transformer will I need to buy in the US for this treadmill? Thanks in advance. 

India is largely 220V AC @ 50Hz. Seems like a lot of HP for a treadmill, please supply ALL of the details off the motor name plate.Cheers,
Richard

Hi Richard. See attached. 

That's what I suspected, its a DC motor, which means that it does not relate directly to what you need by way of a transformer.There should be another rating for the treadmill  associated with the mains input on the power cord. It will be something like input voltage, 220V AC, 50Hz, single phase, so many VA, or something like that. The figure may not be VA, but current in Amps, VA is the product of  input voltage and current in that case.The VA is the key part of it. The transformer should be rated at 120V AC  at 60Hz, output 220V AC, with the same VA rating as a minimum,  you are unlikely to get one at the desired VA rating, and it pays to have a few VA extra anyway.I beleive the current  avialble from a standard US wall socket is 15 Amps, which represents arond 1800VA. If the motor is  actually generating 4HP (around 3000 VA) in use, that may represent a problem. That's why knowing the VA rating at the mains input is so important.Cheers,Richard

Thanks Richard for you help. It is much appreciated. Here are some more photos. Let me know if this helps.The info on the plug is 10A 250V~

Do you have a user manual with the technical data, or does the manufacturer have a web site where the data might be. The 10A  plug is a standard, does not actually tell you how much it draws, only what the maximum current permitted is. It looks like it has a 10A circuit breaker, but that does not help in determining the actual current drawn either.If you use the 10A figure, then the transformer VA is 2200VA.Now  if in the USA you draw 2200VA from the wall socket, at 120V that represents 2200/120,  around 18A. As I understand it, they are typically rated for  15A, so you are overloading the circuit.If you have a  wall socket rated at 20A, then no problem. I am guessing that the current drawn by the treadmill will be less than 10A, but without knowing precisely what it is I would say that a 2.5KVA transformer would safely do it, but you could save yourself some money if you knew what the current draw was. If you have the manual with the actual specification,  or could get a friendly neighbourhood  electrician to temporarily supply a transformer and measure it, then  that might mean you could reduce the VA capacity of your transformer markedly, and hence the price.Cheers,Richard

Thanks again Richard. This is what I got from the manual online
WARNING - To reduce the risk of burns, fire, electric shock, or injury to persons,
install the treadmill on a flat level surface with access to a 120-volt,
20-amp grounded outlet. 

So if I get a 3000W converter that should do, right? Or should I get a 5000W? But now, how do I identify if the wall outlet is a grounded 20 amp outlet? 

A grounded socket will have three pins rather than two. A true isolating transformer does not have a ground.The 3000W is more than enough, hope you don't trip the breaker, make sure no other devices are running off the same circuit. With a bit of luck it will be less than 15A,cheers,Richard