power wire gauge - Team Camaro Tech
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post #1 of 13 (permalink) Old Sep 18th, 14, 06:16 PM Thread Starter
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power wire gauge

I just replaced my battery and the power wire disconnected from the junction box. It looked to be the original wire.

I replaced it with a wire I had here just to get the car running. Its a decent gauge. Is there a specific size wire to use? The one I used said it can handle 600 volts on it, its a green wire not sure what it was from.

any help as always is very appreciated
I plan to change out the junction block and the connections anyway.

1969 Camaro 350 EFI 200r4 342 Posi
1987 WE4 Turbo Regal E85
2003 Sierra Stepside RCSB Belltech dropped


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post #2 of 13 (permalink) Old Sep 18th, 14, 06:38 PM
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Re: power wire gauge

Check out this thread.

https://www.camaros.net/forums/showthread.php?t=200638

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post #3 of 13 (permalink) Old Sep 18th, 14, 07:33 PM Thread Starter
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Re: power wire gauge

The car started fine no smoke nothing , so im assuming the wire is ok for now. i plan to run the car for a while Saturday to trouble shoot another issue.
Would it have burned the wire if it wasn't strong enough ?
Thnx for sharing the link

1969 Camaro 350 EFI 200r4 342 Posi
1987 WE4 Turbo Regal E85
2003 Sierra Stepside RCSB Belltech dropped


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post #4 of 13 (permalink) Old Sep 18th, 14, 08:01 PM
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Re: power wire gauge

The voltage rating is more to do with the insulation rather than the wire. A coat hanger will conduct thousands of volts but you'd never put it in your car.

Battery cables handle large currents measured in amps, these high loads will cause smaller diameter wire to heat up to the point of melting or setting fire to something close. . In the original cable there was a fusible link designed to burn out if there was a fault. Using a random wire might work in the short term but I would strongly advise against it... It's a huge fire risk. 9 times out of 10, I'd say engine bay fires are caused by electrical faults
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post #5 of 13 (permalink) Old Sep 18th, 14, 08:16 PM Thread Starter
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Re: power wire gauge

That's what I figure. This wire is as beefy as what was there originally but i plan to go with the right gauge.
Thnx for the input


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1969 Camaro 350 EFI 200r4 342 Posi
1987 WE4 Turbo Regal E85
2003 Sierra Stepside RCSB Belltech dropped


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post #6 of 13 (permalink) Old Sep 18th, 14, 08:59 PM Thread Starter
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Re: power wire gauge




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1969 Camaro 350 EFI 200r4 342 Posi
1987 WE4 Turbo Regal E85
2003 Sierra Stepside RCSB Belltech dropped


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post #7 of 13 (permalink) Old Sep 18th, 14, 09:52 PM
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Re: power wire gauge

There's a schematic in the AIM. Looks like it was 14 ga, red wire. Kinda confusing as it's routed toward the junction block and is coming from the positive batt. terminal, but shows a ground symbol on the end. Check it out, it's obviously not grounded...

  • '68 RS, AA, 749, L30, M(uncie)20 (originally a 3spd), 15yr backburner resto........
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post #8 of 13 (permalink) Old Sep 19th, 14, 07:31 AM
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Re: power wire gauge

The wire going from the battery positive to the junction block behind the battery should be 14 AWG red fusible link available at any parts store. This essentially acts like a fuse if there is a current overload somewhere past the battery. It's job is to burn up and protect the wiring harness, and keep the car from burning down in the most extreme cases. Fusible links are used in places were regular fuses wouldn't operate properly, i.e. a fuse might blow immediately during an inrush current spike that is considered normal in a car's electrical system. I use an auto resetting circuit breaker there instead of fusible link though. It's become common to replace fusible links with Maxi Fuses as they have a time delay (better absorb momentary spikes) and are easily replaced compared to links since they are basically just large versions of the blade type fuses we've all grown accustomed to.

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post #9 of 13 (permalink) Old Sep 19th, 14, 08:52 AM Thread Starter
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Re: power wire gauge

Def learned a lot thnx so much

1969 Camaro 350 EFI 200r4 342 Posi
1987 WE4 Turbo Regal E85
2003 Sierra Stepside RCSB Belltech dropped


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post #10 of 13 (permalink) Old Sep 19th, 14, 09:35 AM
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Re: power wire gauge

This might help:
At a later time, you may want to get molded post clamps onto the cables, meaning new min 1 AWG gauge battery cables, as the clamp-on's shown can introduce conduction problems with excessive corrosion.
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post #11 of 13 (permalink) Old Sep 19th, 14, 10:27 AM Thread Starter
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Re: power wire gauge

Not a bad idea


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1969 Camaro 350 EFI 200r4 342 Posi
1987 WE4 Turbo Regal E85
2003 Sierra Stepside RCSB Belltech dropped


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post #12 of 13 (permalink) Old Sep 19th, 14, 10:41 AM
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Re: power wire gauge

I would belly up to the bar and get good battery cables and get away from the ones you have on there now. I too would get the ones made that include the small gauge fusible links.
On my 68 Nova I bought restoration style battery cables from Classic Industries and they are the spring type and they had the fusible link wires on them. When I first installed them I had a battery with the positive close to the fender and all of the big and small wires were long enough to make connections where the factory had them but later I added the battery topper which then positioned the battery negative post closest to the fender, the fusible links were not long enough so I extended them but still kept the fusible links in place for protection.

The spring end cables have their place but if you need to add extra power or ground cables off of the battery terminals then get the style that use a nut and bolt to clamp the end to the post to where later you can take the nut off, put on an added wire with a ring terminal on it and then put the nut back on and have solid connections. You cannot easily add extra power and ground wires using the spring end type.

On yours while it may work I would correct things. If that green wire you have now off of your positive post crossing over the negative post ever shorts, expect bad results.

Jim

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post #13 of 13 (permalink) Old Sep 19th, 14, 01:14 PM Thread Starter
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Re: power wire gauge

The green wire was a temporary fix to get the car running, just picked up 10 awg to install tomorrow


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1969 Camaro 350 EFI 200r4 342 Posi
1987 WE4 Turbo Regal E85
2003 Sierra Stepside RCSB Belltech dropped


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