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I have an appliance which is rated for a voltage range of 110-127 volts, drawing 4.5 amps. I would like to use it on 220 volts using a 500 Watts converter. However, I just wanted to make sure that my calculation are correct so that I don't end up smoking the appliance or the converter or both.

This is how I went about figuring it out.

Power = volts x amps

Therefore; the power rating of this appliance is between 495 Watts (110 x 4.5) to 572 Watts (127 x 4.5).

So, I have a pretty high chance of burning out that voltage converter!

Am I right?

If so, how do you figure out what is a suitable rating for a power converter for this appliance? I know that power surges temporarily when turned on/off.

Thank you all.