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Old 08-31-2020, 05:34 PM   #1
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Battery Bridge?

I have a 1999 Pace Arrow and I have had some battery issues. When I was checking things out, I noticed I had 4 large battery cables connected to my single Pos battery post. I was wondering if there is a battery bar or bridge that I could bolt onto the body of the RV, run a cable from the battery to this bridge and then connect each cable to a separate post on the bridge? I thought of taking a 1" x 1/4" flat steel bar, drill 5 holes in it, put in 5 bolts to connect the cables to and insulate the back and sides. Not sure about the power lost using steel.

Still need to find out why there are 4 cables!

Regards
Wayne
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Old 08-31-2020, 05:43 PM   #2
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Do you mean a Bus Bar, something like this?

https://www.amazon.com/Post-Power-Di...dDbGljaz10cnVl
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Old 08-31-2020, 05:53 PM   #3
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Every inch you add to the length of your cable run, reduces the available voltage at the end of the run.
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Old 08-31-2020, 05:54 PM   #4
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As Bcam said, you're looking for a buss bar, not a "bridge". The one he linked looks pretty good but even on that one you will need to double up on one lug for the cable back to the battery positive post.
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Old 08-31-2020, 05:59 PM   #5
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Quote:
Originally Posted by HarryStone View Post
Every inch you add to the length of your cable run, reduces the available voltage at the end of the run.
True, and in his case an extra foot of 1/0 battery cable will drop 39 millivolts at 200 amps. Probably not worth worrying about.
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Old 08-31-2020, 06:10 PM   #6
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Quote:
Originally Posted by HarryStone View Post
Every inch you add to the length of your cable run, reduces the available voltage at the end of the run.
The voltage drop over 1 foot of 2-0 cable, AT 200 amps, is .030 volts. At 100 amps its only .020 volts.

12.6 volts at the battery leaves you 12.569 volts, a foot away. My meter would round that up to 12.6 volts.

Hardly anything to worry about.
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Old 08-31-2020, 11:56 PM   #7
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Quote:
Originally Posted by tfryman View Post
As Bcam said, you're looking for a buss bar, not a "bridge". The one he linked looks pretty good but even on that one you will need to double up on one lug for the cable back to the battery positive post.
Doubling up on one post won't be a problem. And, as others have indicated, the voltage drop due to the cable to the buss bar.
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