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Old 01-24-2021, 09:42 PM   #4
Bill G
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Join Date: Jun 2017
Location: Walla Walla, WA
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Default Re: Does Gauge of Ground Wire Matter

Each side of the circuit carries the same current.

Use the heavier gauge wire. Realistically, the smaller wire will certainly carry the current needs for all your electrical devices except your starter. Your starter will appreciate the heavier cable and you will have one less thing to fail when you are out on the road somewhere.
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