Battery Cable Wire - What Gauge? - Team Camaro Tech
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post #1 of 13 (permalink) Old Mar 12th, 09, 04:50 PM Thread Starter
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Battery Cable Wire - What Gauge?

Hey guys, what's the proper or the best gauge wire to use for battery cables and grounding cables.

Stock Location

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Last edited by ddx77; Mar 12th, 09 at 05:11 PM. Reason: spelling error, added
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post #2 of 13 (permalink) Old Mar 12th, 09, 05:03 PM
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Re: Battery Cable Wire - What Gauge?

Is the battery located in the stock location, or in the trunk?

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post #3 of 13 (permalink) Old Mar 12th, 09, 05:10 PM Thread Starter
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Re: Battery Cable Wire - What Gauge?

stock location

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post #4 of 13 (permalink) Old Mar 12th, 09, 05:11 PM
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Re: Battery Cable Wire - What Gauge?

Minimum #1 AWG

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post #5 of 13 (permalink) Old Mar 12th, 09, 05:23 PM
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Re: Battery Cable Wire - What Gauge?

IMO if you have an original car (no new electric goodies) #2 is fine.

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post #6 of 13 (permalink) Old Mar 12th, 09, 05:28 PM Thread Starter
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Re: Battery Cable Wire - What Gauge?

Not really an original car (I wish) and what I am trying to do is run my cables so they are a bit more hidden.

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post #7 of 13 (permalink) Old Mar 13th, 09, 10:41 PM
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Re: Battery Cable Wire - What Gauge?

I've got 1/0 from my battery to the starter, alternator, and grounds. When connecting to the stock harness, it won't do much good to go big since the stock cable is what, 8-10AWG? Well, at least on my '69. I'm going to redo that eventually....
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post #8 of 13 (permalink) Old Mar 14th, 09, 01:07 PM
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Re: Battery Cable Wire - What Gauge?

Quote:
Originally Posted by Steiner View Post
I've got 1/0 from my battery to the starter, alternator, and grounds. When connecting to the stock harness, it won't do much good to go big since the stock cable is what, 8-10AWG? Well, at least on my '69. I'm going to redo that eventually....
A bigger cable isn't for running accesories, it's for carring cranking amps to the starter.
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post #9 of 13 (permalink) Old Mar 14th, 09, 02:27 PM
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Re: Battery Cable Wire - What Gauge?

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Originally Posted by Oldrocker View Post
A bigger cable isn't for running accesories, it's for carring cranking amps to the starter.
That depends on what the amperage draw is of the accessories.
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post #10 of 13 (permalink) Old Mar 14th, 09, 04:00 PM
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Re: Battery Cable Wire - What Gauge?

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Originally Posted by Steiner View Post
That depends on what the amperage draw is of the accessories.
You mentioned going to the stock harness. There are no accessories that connect to the stock harness that draw enough amps to require a large cable, and nothing that requires a large amount of amps should be connected to the stock harness. If you are speaking of aftermarket accessories like stereo amplifiers etc... then a separate cable large enough to carry the required amps should be connected directly to the power source or a junction block designed to handle a large amount of amperage.
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post #11 of 13 (permalink) Old Mar 14th, 09, 04:08 PM
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Re: Battery Cable Wire - What Gauge?

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Originally Posted by Steiner View Post
That depends on what the amperage draw is of the accessories.
On the nail, Steiner.

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post #12 of 13 (permalink) Old Mar 14th, 09, 04:13 PM
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Re: Battery Cable Wire - What Gauge?

Quote:
Originally Posted by Oldrocker View Post
You mentioned going to the stock harness. There are no accessories that connect to the stock harness that draw enough amps to require a large cable, and nothing that requires a large amount of amps should be connected to the stock harness. If you are speaking of aftermarket accessories like stereo amplifiers etc... then a separate cable large enough to carry the required amps should be connected directly to the power source or a junction block designed to handle a large amount of amperage.
Yes. And my original post that you quoted stated this:
"When connecting to the stock harness, it won't do much good to go big since the stock cable is what, 8-10AWG?"

As in, connecting a bigger cable to the stock harness won't do any good because you'd have say a 4AWG cable connected to an 8AWG cable. I was talking about connecting to the stock harness right off the battery if there was any confusion, not the starter harness or alternator harness. As I said, both of those are already 1/0 in my case. I upgraded the alternator line to battery in case I wanted to add more accessories later and had to upgrade my bus line.
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post #13 of 13 (permalink) Old Mar 14th, 09, 07:26 PM
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Re: Battery Cable Wire - What Gauge?

Quote:
Originally Posted by Steiner View Post
Yes. And my original post that you quoted stated this:
"When connecting to the stock harness, it won't do much good to go big since the stock cable is what, 8-10AWG?"

As in, connecting a bigger cable to the stock harness won't do any good because you'd have say a 4AWG cable connected to an 8AWG cable. I was talking about connecting to the stock harness right off the battery if there was any confusion, not the starter harness or alternator harness. As I said, both of those are already 1/0 in my case. I upgraded the alternator line to battery in case I wanted to add more accessories later and had to upgrade my bus line.
I understand your point and it is valid. My point when used in the original context is also valid. If using a factory harness the only good reason to run a bigger cable is to provide more available cranking amps to the starter. So in reality we are both right but looked at the question in different directions.
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