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Old 08-30-2016, 07:16 AM   #1
Rivet Master
AWCHIEF's Avatar
2006 23' Safari SE
Biloxi , Mississippi
Join Date: Nov 2011
Posts: 8,278
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Rats nest in battery box

(Copy of my post in another thread)

"Inspired by Rocinante - no real name given.
Made a count of the individual wires making up my battery box rats nest.

Emergency brake
Back up camera
TST TPMS repeater
Two mystery wires that lead inside the trailer
Positive and ground main battery cables

Tomorrows project is a small marine junction box mounted on the side of the battery box with one wire leading to the battery positive post. I found one in my box of swag from my sailboat cruising days that will work nicely."

Question for the pros,

What size wire should I use from the battery to junction box?


Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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Old 08-30-2016, 07:21 AM   #2
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2013 28' Flying Cloud
Central , Canada
Join Date: Mar 2014
Posts: 1,034
Good Idea!
I have a bit of a nest starting in our battery box also. Will be interesting to get input on wire size.

Trying to use my camera to create memories - not photographs!
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Old 08-30-2016, 08:08 AM   #3
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1959 24' Tradewind
Heber , Utah
Join Date: Mar 2015
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I used six gauge on mine but I know 10 gauge should be enough be enough it all depend on how must stuff you plan un using. 10 gauge will handle 30 amps.
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Old 08-30-2016, 08:37 AM   #4
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2014 27' FB International
Green Cove Springs , Florida
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My suggestion: I suspect we're only talking about a couple of feet between the battery box & new junction box, but voltage loss is voltage loss and the cost of a short cable like that shouldn't be a show-stopper. So, within reason the thicker the wires (one black and one red?) from the battery box to your new junction box, the better. For starters, I'd suggest they should be at least as thick as the main house wires that go to the battery box right now, and maybe one gauge thicker. What gauge is that wire?
Rocinante is our 2014 International Signature 27FB
(Named for John Steinbeck's camper from "Travels With Charley")

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