Posted by John T on September 11, 2019 at 08:49:33 from (96.72.237.81):
In Reply to: Re: Battery cable size posted by Geo-TH,In on September 11, 2019 at 08:37:28:
George, the shorter the cable the less line voltage drop and that's true of any size cables be they 2 or 4 gauge.... Voltage drop = I x R so less cable resistance due to less cable length = less line voltage drop..... Its still true bigger cable = less voltage drop, = less I Squared R Heat losses, = more power to the starter versus wasted in cables. 4 will work but 2 gauge yields less line voltage drop in long or short cables. Its his money and his choice.
NOTE Im not saying how much difference 2 or 4 gauge makes versus length, that's a simple math problem, Im ONLY saying bigger cable = less LINE voltage drop PERIOD
One has the right to use what he likes as far as Im concerned, I'm only giving math and engineering answers.
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