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Old 04-23-2019, 02:05 AM   #1
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Brand: Thor Motor Coach
Model: Vegas 25.2
State: Missouri
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THOR #4687
What gauge wire is used VEGAS/AXIS Batteries

I am getting ready to add two (2) 12v batteries to my existing two (2) 12v batteries in my 2016 VEGAS.

I want to match the cables used to PARRALLEL the existing batteries, but not sure what the existing cable's gauge is.

I am guessing it is 2/0, but any confirmation of that would be greatly appreciated.
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Old 04-23-2019, 02:28 AM   #2
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Model: Vegas 24.1
State: Florida
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THOR #14807
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Originally Posted by Mo_Mike View Post
I am getting ready to add two (2) 12v batteries to my existing two (2) 12v batteries in my 2016 VEGAS.

I want to match the cables used to PARRALLEL the existing batteries, but not sure what the existing cable's gauge is.

I am guessing it is 2/0, but any confirmation of that would be greatly appreciated.
I just did a lot of battery work & I used 2/0 welding class cable with 2/0 lugs.
Got the wire, lugs, cutter & crimper on Amazon.
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Old 04-24-2019, 12:20 AM   #3
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Model: 2017 Axis 25.4
State: Arkansas
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THOR #12231
I wish I had my RV outside (in storage) but when I changed over to my 6 volts it seems like the were either 2.

I know 4 gauge was the largest wire that I could fit in the OEM Converter when I installed my inverter.

Looking at the picture of the batteries below Im thinking 2 g? I would be surprized if they were any larger than 2g.
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Old 04-24-2019, 02:06 AM   #4
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Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
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THOR #6411
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Originally Posted by Mo_Mike View Post
I am getting ready to add two (2) 12v batteries to my existing two (2) 12v batteries in my 2016 VEGAS.

I want to match the cables used to PARRALLEL the existing batteries, but not sure what the existing cable's gauge is.

I am guessing it is 2/0, but any confirmation of that would be greatly appreciated.
On my coach Thor used number 6 wire (55 amp) from the battery compartment to the power center and from the converter to the battery bank.. The store /use relay is only rated for 55 amps continuous. For the leads to the jack pump and generator start, Thor used number 2 wire and for the 1,000 watt inverter Thor used 0/0 wire. Connections between the two batteries are 0/0 wire and the leads to the 100 amp and 50 amp circuit breakers. Wires need to be sized for the max amperage load on that circuit. 0/2 wire is rated for 200 amps.
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Old 04-24-2019, 11:56 AM   #5
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Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
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THOR #13869
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Originally Posted by Beau388 View Post
On my coach Thor used number 6 wire (55 amp) from the battery compartment to the power center and from the converter to the battery bank.. The store /use relay is only rated for 55 amps continuous. For the leads to the jack pump and generator start, Thor used number 2 wire and for the 1,000 watt inverter Thor used 0/0 wire. Connections between the two batteries are 0/0 wire and the leads to the 100 amp and 50 amp circuit breakers. Wires need to be sized for the max amperage load on that circuit. 0/2 wire is rated for 200 amps.
I agree here.
To support present battery system & parallel more, I would use no less than #6.
But the line doing the load needs to be heavier, dependent on what that amperage is to be.
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