Are blenders and food processors usually rated in terms of average wattage or peak wattage?
I'm no electrician, but as Amps = Watts/Volts they had better be telling you the peak load, or you risk blowing fuses.
1500W on 240v = 6.25A.
1500W on 120v = 12.5A
This isn't like cheap hi-fi where they tell you the peak figure to make you think it's going to be louder ;)