Originally Posted by
Loren Pechtel
Heating elements generally don't have much tolerance. The problem is that the heat they produce goes up at the square of voltage. Going from Japanese 100V power to American 120V power means the heating element produces 44% more heat. I found an image of the back panel that says 1,400W. Even if the heating element can take it a standard US outlet is only rated for 15A--this would draw 16.8A.
Originally Posted by
gfunkdave
No, the voltage is still 120 V. 1400 W/ 120V = 11.6 A.
No. You have an element that dissipates 1,400W when fed 100V. That means it's drawing 14A and thus has a resistance of 7.1428 ohms. Now you feed 120V through 7.1428 ohms and you get 16.8A. 16.8A @ 120V = 2016W.