Posted by John T on July 19, 2012 at 14:55:28 from (216.249.82.117):
In Reply to: Battery cable gage? posted by earnest T on July 19, 2012 at 14:13:32:
Heres the deal, if what you have has allowed for good starting in the past even in cold temps, I see no over compelling reason to upgrade.
That being said and as an electrical engineer, its obviously true a bigger gauge wire would drop less voltage, so sure, bigger is better generally speaking, as two twelves in paralell can likely deliver maybe 1000 amps into a heavy load (subject of course upon the load) in which case (again depends on the load and batery capacity) 0 or even 00 cables sound pretty tempting.
Sooooooo if I were starting from scratch to start a diesel in cold temperatures that requires two twelves in paralell (may well be 1000 CCA) Id be tempted to use 0 or 00 Gauge cables HOWEVER if the 2 has worked fine in the past and are already in place I see no reason why it still wont work okay. Its your tractor your money your choice NOT ours.....
NOTE A "diesel" that requires two 12's in paralell in the first place isnt quite the same as an old 12 volt gas tractor ya know (2 gauge is fine on 12 volts subject to engine and starter size) so dont assume cuz a gas can get by with a single 12 volt battery and 2 gauge cable that means a harder to crank diesel is the same thing
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