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Old 10-08-2015, 12:44 AM   #1
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Join Date: Feb 2012
Location: NowthWest
Posts: 126
What gauge battery wire

I up graded to two 6 volt Trojans (T105). They are installed on the front trailer frame behind the propane tanks. They are in two separate cases and wired for maximum amp hours. I have one cable connecting them together (negative to positive) and the positive cable going about 5 feet and enters a junction box with the wire from the tongue jack and the main 7-pin I connect to the TV. The other cable is a little longer but just just connects to the frame next to where the positive cable goes into the junction box. I just noticed the cables are 6 gauge. From the conversation on this site, I'm beginning to think they are to small. Any thoughts?

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Old 10-08-2015, 09:30 AM   #2
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Join Date: Mar 2008
Location: Southwest Alabama
Posts: 3,289
#6 awg should be plenty big enough. #6 is good for 100 amps chassis wiring. At 5' the voltage drop will be minimal.
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