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Old 02-14-2003, 02:42 AM   #1
MrBurns

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0ga wire pos and neg

I know that a good ground is very important important.

Is there a problem with running a 0ga from the battery negative into the trunk and connect it to a distrobution block, just like the positive line?

Every install I have seen has the gound bolted to the body or chassis (actually seen a hole drilled through the floor and a wire run through a rubber grommet and bolted directly into the frame).

What about running 0ga for power and 0ga for ground both from the battery? I imagine that would give a better ground than the body because steel (the body) is less conductive than copper.
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Old 02-14-2003, 03:05 AM   #2
grooveOne

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Recommended ground wire length is ussually 3feet or less
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Old 02-14-2003, 03:06 AM   #3
zdimka

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interesting... i can see how you think it will be a much better ground, but im not sure if its safe or even practical to use...

plus youd need about 20 extra feet of 0ga...
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Old 02-14-2003, 03:09 AM   #4
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I know I would need about 20 ft, but the welding shop I am going to has 0ga as double wire ... like really thick speaker wire... side by side molded together.

It looks like REALLY thick black lamp cord! LOL
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Old 02-14-2003, 03:47 AM   #5
Hazard269

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Well the whoel body and fame of the car is a ground so its not like the battery is a better ground than the rest of the car. So its pretty much your best bet to gorund somewhere one car just sand down where your going to ground and that will work fine. Plus if you go all the way back to the battery you have a greater chance of picking up ground noise.


-Chris
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Old 02-14-2003, 03:56 AM   #6
MrBurns

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Inducted noide is a good posibility, but I was just thinking in terms of lowering the resistance with a direct copper to the batt negative.

It could work really well, or it could make the system really noisy.

I would not run the line near anything else. Infact, to reduce the posibility of inducted noise, the pos & neg could be twisted (was thinking along the line of network UTP)... no wait ... would that increase the noise because it is twisted with the pos line?
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Old 02-14-2003, 04:03 AM   #7
Hazard269

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I dunno but there is really no need...you can get just as good as of a ground and have a less chance of noice if you just goto the body or frame of the car somewhere near the amps.

-Chris
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Old 02-14-2003, 04:08 AM   #8
Fredman

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Quote:
Originally posted by grooveOne
Recommended ground wire length is ussually 3feet or less
Im sure if you had some enormous wire for the ground, it would be better than the body of the car right? Like 10 ot
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Old 02-14-2003, 04:42 AM   #9
Hazard269

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Quote:
Originally posted by Fredman

Im sure if you had some enormous wire for the ground, it would be better than the body of the car right? Like 10 ot
Not really bc that basically what the car is ... a big wire ... 1 ground....its much bigger thana wire....


-Chris
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Old 02-14-2003, 04:52 AM   #10
Fredman

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Yeah i know but if the wire is HUGE, It would allow a easier flow right
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Old 02-14-2003, 04:52 AM   #11
Fredman

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Ehh dumb off topic
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Old 02-14-2003, 04:57 AM   #12
evoInfinity

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If you are running close to the max current allowable by you wire then it isnt really good. But if you have the wire and you have the time then try it out and see what happens. I would like to see a review about how good it works.
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Old 02-14-2003, 04:58 AM   #13
Fredman

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repeat oops
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Old 02-14-2003, 05:04 AM   #14
MrBurns

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Quote:
Originally posted by evoInfinity
If you are running close to the max current allowable by you wire then it isnt really good. But if you have the wire and you have the time then try it out and see what happens. I would like to see a review about how good it works.
After I get the wire & try it out, I'll post a full review with pics.

I will try with the system grounded to the body near the trunk and with the system connected directly to the battery via 0ga. I will try various tones with a signal generator and measure signal quality with my oscilloscope in both grounding configurations.
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Old 02-14-2003, 05:13 AM   #15
Hazard269

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Quote:
Originally posted by Fredman
Yeah i know but if the wire is HUGE, It would allow a easier flow right
The car in this case is basically a HUGE wire....

-Chris
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