Re: 2 or 4 gauge wire
I agree, if the price is right, go with the biggest you can fit, if you're ever going to upgrade. Then again, if you upgrade to more batteries, you'll end up building new/different cables anyway when you try to fit everything in, so.... :)
I was considering doing 2ga myself, since I have a good bit of it laying around my shop, but then again I have about 24 feet of 2/0 laying around as well, so I could go really crazy... I'm thinking most of my carts will end up with 4ga since they won't see huge upgrades, and the 4ga is sufficient to handle most upgrades I would consider anyway.
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