grounding?

[Buck 5,000+ posts]

Hey thanks for the illustration.
One question though, since both my amps have 2 power and ground inputs. I would have a total of 4 ground runs to the rear batteries, would I need 4 grounds off the rear batteries as well or just 2?

You've got a lot to figure out. How big of alternator are you running? And what are you're amps.

 

[TnT_Sounds 10+ year member]

Going to be dual DCpower alts and 2 atomic 7k's or 2 IA 40.1's.

You got any advice?

 

[Buck 5,000+ posts]

Going to be dual DCpower alts and 2 atomic 7k's or 2 IA 40.1's.
You got any advice?

Well specific alt amperage and 2 of them? And are you running the system with the car off or running?

 

[TnT_Sounds 10+ year member]

I believe both will do over 300amps at 2k rpm. So 600amps, truck is never played without running. I have 6 deka 31's and 2 runs of 2/0.

 

[Buck 5,000+ posts]

You need more then 2 runs of 2/0 IMO. I would do 4 runs 1/0, or two runs 4/0.

 

[TnT_Sounds 10+ year member]

Not really going to matter with just 2 runs... I have only 600amps in alt power to surge through wire anyways.. The rest will be the batteries surging and the amps would pull the heavier load off the 5 rear batts with strapped with busbars.

 

[loopkiller 10+ year member]

Hey thanks for the illustration.
One question though, since both my amps have 2 power and ground inputs. I would have a total of 4 ground runs to the rear batteries, would I need 4 grounds off the rear batteries as well or just 2?

I can't really tell what you are asking, so I am not sure how to answer. But, the rule of thumb here is make sure your POS+ wiring matches your NEG- wiring. So if you need 2 runs of POS+ 1/0, then run 2 runs of NEG- 1/0.

 

[Buck 5,000+ posts]

Not really going to matter with just 2 runs... I have only 600amps in alt power to surge through wire anyways.. The rest will be the batteries surging and the amps would pull the heavier load off the 5 rear batts with strapped with busbars.

I know but you are really pressing the limits of that wire.

 

[TnT_Sounds 10+ year member]

I know but you are really pressing the limits of that wire.

6000 strand count and can easily pass close to 450amps through it. So I beg to differ.

To loop,

What I'm saying is since my amps have 2 grounds each and I'm running 2 amps I would have a total of 4 grounds from the amps going to the batteries negative.

Would I need to have 4 grounds for the rear batts as well?

 

[Savag3 10+ year member]

you should ground everything to same frame rail,(thus being all on the same grounding circuit) as well as the negs from the front bank

 

[brian84corvette 10+ year member]

my car is a terrible conductor, but that being said, I grounded my rear battery to the frame, and my front battery to the frame, AND ran pos. and neg. from front battery to rear battery, using the negative terminal on rear battery as a junction for the amp ground, the ground going to the front battery, and a rear ground for that battery.

when doing grounds - it can NOT hurt you to have more , but it totaly can hurt to not have enough good solid ground.

 

[nineball 10+ year member]

What I'm saying is since my amps have 2 grounds each and I'm running 2 amps I would have a total of 4 grounds from the amps going to the batteries negative.

Would I need to have 4 grounds for the rear batts as well?

no. i hope the amps only call for 4g wiring, or your 2 runs of 2/0 may not be big enough.

 

[TnT_Sounds 10+ year member]

Ok I drew up a quick illustration of what Im thinking I have to do.. Tell me if this is corrrect.

You see how I have a total of 4 grounds from the amps?

Do I need to put 4 grounds off the rear batteries as well or just 2?

 

[TnT_Sounds 10+ year member]

right or wrong??

ttt

 

[White Ram 10+ year member]

IF you have 2 power wires for each amp make sure you have the same amount of grounds for each amp.