Originally Posted by
birdstrike
Amps = Watts/Volts
Need someone from a 220V country to chime in here, but it seems to me that for a purely resistive device, like a lightbulb, you are going to be pulling the same current for a given brightness of bulb?
I don't see where any re-wiring would be needed.
The resistance of 110 V bulb is about a quarter of the resistance of a 220 V bulb for the same wattage. If you power a 110V bulb with a 220V source, it will draw draw four times as much power and twice as much current. Changing the bulb holder, the bulb and the plug that goes into the outlet, or an adapter should suffice. In some countries bulbs are screw mount while in others, they are bayonet mount. The base is different two in width and in the number of electrodes at the bottom.