putting in a wall oven. ran 12 gage solid wire because it called out for 20 amp. got the wall oven in hand and it has 8 gage stranded coming out of the whip. i know the oven is 220 volts and 12 gage is suppose to be for 110 volts, but i could take the white neutral wire and run another 110 volts to it to make my 220 volts. but my question is will it carry the amount of volts i need to carry safetly?