i would say around 30 amps would be the maxing level lastnthebest88 Hes talking about AMps the power unit not the car amplifier
Ampacity is rated differently for different conductors. Copper has higher ampacity than aluminum. Check the manufacturers web site for specifics, as your question is too general to answer. An imprecise guess might be something like 20 amps.
depends on your amps but i wouldnt push 2 amps cuz thats pretty tiny wire try and get some 4 ga or higher wire for a noticeable difference.