This assumes a length of around 15'
Wire Gauge --- Current Flow --- Max Total Amp Power --- Max Total Amp Power
-------------------------------- Class AB (60% eff) ------ Class D (75% eff)
_______________________________________________________________
-- 0 awg ------ 330 amps --------- 2731 watts ------------- 3414 watts
-- 1 awg ------ 262 amps --------- 2168 watts ------------- 2710 watts
-- 2 awg ------ 208 amps --------- 1720 watts ------------- 2151 watts
-- 3 awg ------ 165 amps --------- 1365 watts ------------- 1707 watts
-- 4 awg ------ 131 amps --------- 1084 watts ------------- 1355 watts