What guage to use????

[nasoccerplayer 10+ year member]

Amps: 400x2 rms at 2ohms (800x2 watts max) and 125x4 rms at 4ohms. What guage wires should I use for power and ground???

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[DFW40 10+ year member]

4 gauge is what I would go with.

The gauge also depends on the length of the setup. If you have your battery in the back of the car then your gauge does not need to be as thick and if you drive a long suburban with a 20 ft power cord it would need to be thicker all things being equal.

 

[jaboran 10+ year member]

ditoo... 4 gauge from batter to distribution block.. then 8 ga power cables from distribution block to amps... then the amps would require the same gauge wire to be grounded with(8ga.)..

(1) 4gauge wire(length from battery to distribution blocks(close to amps)

(2) 8gauge power cables (length from dist block to amp)

(2) 8gauge ground wire