Originally Posted by pauldovi
What would be the point of having 2 power cables if you plug it into the same circuit? Extension cords = increased resistance.
This is dumb.
No, he is right. As you increase distance, resistance linearly increases. With increasing amperage, resistance increases at a power of 2. If you have a high power load, you would NOT want to use an extension cable. The entire cable would get very warm/hot creating a potential fire hazard.
What would probably work better is a 220V extension cord because then you have half the amperage and 1/4th the resistance. This would allow you to have a cord run 4x as long with the same potential for disaster.
Realistically, getting a 220V line run to your room would be the best idea. Or, get a transformer to up the voltage from your 220V line in your garage (dryer) , to...say...400V and then run a line to your room, and down convert it again.
Actually power companies do the same thing. They have those high voltage power lines because resistance is SIGNIFICANTLY less. I remember in class, we calculated, that at 120V, they would lose 60% of the power having those lines run 100Miles, but with the voltage they use (can't remember) it was about 5% loss for the same distance. (Not to mention that all that amperage on a line would require MUCH higher gauge wires.)
/really long post