Originally Posted by
Krio
It depends on the motor and voltage. What is the exact esc and motor and what car is it going in? If you have a crazy powerful setup, it might be a good idea to bump up to 10awg all around.
Does it really?
(Picture comes from
RCGroups discussion)
It wouldn't even be possible to be "leaving power on the table", your wires would just start to get hot. Your also making a pretty big assumption that it will be at 100% all of the time.
Evoking1230:
12 guage is more than plenty for most any setup. I doubt your doing longer than 2 foot runs wire.