Multiple Grounds?

[JoeSmith502 10+ year member]

I am going to be running 2 extra bats in the trunk and I was wondering if its ok to ground the bats in multiple locations. I am thinking of running a ground back to the front battery and using multiple ground spots on the trunk area. Is this a good thing to do or will it cause problems? I will have two 1/0 positive runs from the front bat to the rear ones. Thanks in advance..

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[01 S 10 10+ year member]

why not one ground in the back for both batts?

 

[nik 10+ year member]

i dont thing its necesary... anyway you will take your amps ground straight from your trunk batts

so one 1/0 from the frond batt & one 1/0 ground too the metal from your trunk batts and its fine one 1/0 is fine for 200A

 

[JoeSmith502 10+ year member]

But what I'm saying is that if I wanted to, could I ground the bats in 5 different places? I'm not saying I'm going to but would it hurt to have more than one ground? With multiple grounds, wouldn't it make it easier for the amps/bats if there is more grounds so there is less resistance? I will be running two amps, one rated at 500 amps and the other 250 amps. The 500 amp one has two inputs for positive and two for negative and the other amp has one of each. Since I will have three power wires, I will have three negatives running back to the bats. So shouldn't I have at least two negatives coming from the batteries to a ground? If so, should I ground in the same spot for both or in different spots? Thanks! Joe

 

[Coolwazabi 10+ year member]

i wouldn't recommend it... it could create ground loops //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[Ali1 10+ year member]

could you? yes

will there be any issues? no

is it more efficient? no

 

[helotaxi 5,000+ posts]

If you are already going to run a neg cable to the front battery, you don't need any other grounds and really won't gain anything by making them.