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Message: <blockquote data-quote="QualityCarErock" data-source="post: 1738436" data-attributes="member: 567500"><p>Your dad has a good head on his shoulders. He isn't wrong about their really not being a big difference unless you're dealing with a good length of cable. The part he's not considering though is what the max amps that can be ran through smaller cable is. There is a cutoff as to how much current each size of cable can deliver. 4 gauge is roughly 130 amps. 0 gauge is 220 i think. So, if it's 8 gauge and your system requires 100 amps and 8 gauge cannot transfer any more then say 60 amps, then yes, you have a need and a benefit for upgrading.</p></blockquote><p></p>

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