Originally Posted by
snoebel
14AWG will not deliver 20 amps for a long time
After a couple of seconds it will be so hot that it will melt any parts that are close in the car.
Yes it will, or even more. At 110 or 220volts no, but at 8 or less volts it won't have a problem. I have a 30amp discharger that is wired with 14 gauge and after about 2 minutes of use the wires are only slightly warm. A good way to rate current is wattage. Watts=amps x volts. So 20 amps x 8 volts is only 160 watts. If you are comparing that to household voltage of 110 at 20 amps that would jump to 2200 watts! In that scenario the 14 gauge would quickly melt and start fires. However in an r/c car, not hardly.
So to actually answer the question:
CarKing- Can you drive for 5 minutes without crashing consistently? If not, don't bother with 12 gauge because any difference in power will have been eaten up by just the slightest touch of the boards.