[Al Skierkiewicz]

Originally Posted by yash101

Also, wouldn't you need gauge 6 wire or so, for the current traveling at 120volts?

#6 at 100 amps will drop 0.1 volt for every 2 feet of length. At 100 feet that is 10 volts. (remember you have to calculate for both the red and the black wire.) While at 220 volts that represents a mere 0.045% at 12 volts that is 83% drop in voltage. The wire size in a residential home is calculated on the voltage loss expected in a particular length and then fit to the breaker size. Many circuits in a typical house are 15 amp breakers fed with #14 wire. If you look at typical spec sheets, appliances are designed to run down to about 90 volts.