Parallel battery cable size

[Adogbmw]

I am swapping 2 golf cart batteries for 2 Lithium. Do to the size of the batteries I needed a longer cable. I ordered a 2 gauge wire then after receiving it saw that my existing cables are 2/0. Can I use the 2 gauge with the 2/0?

 

[* Boondocking *]

You will be fine with that size (2 gauge) between the batteries.

 

[Adogbmw]

To be clear I'd connect the negative with a 2/0 and between the positive would be a 2 gauge?

 

[TravelSolo]

all depends on what amperage you are intended to be drawing at once from the batteries.

 

[Adogbmw]

At most, very rarely, a furnace, a couple lights and water pump si, about 15.

 

[D W]

all depends on what amperage you are intended to be drawing at once from the batteries.

X2. As long as you're not going to be drawing north of 115 amps from that battery bank you'll be okay with 2 AWG cabling.

 

[timfromma]

I use these:


https://www.amazon.com/Cartman-18-I...64&sprefix=battery+cables,aps,158&sr=8-1&th=1

 

[NJKris]

I agree with the 2 gauge recommendation. Don't forget, resistance is a product of gauge and LENGTH. For a short cable run, 2 gauge is absolutely fine.

 

[Clint_TX]

I agree with the 2 gauge recommendation. Don't forget, resistance is a product of gauge and LENGTH. For a short cable run, 2 gauge is absolutely fine.

X2 plus that short cable will only see 1/2 the total battery current being drawn. The existing cable used to put the 6 volt batteries in series was subjected to the full amperage.

 

[jimmoore13]

I agree with the 2 gauge recommendation. Don't forget, resistance is a product of gauge and LENGTH. For a short cable run, 2 gauge is absolutely fine.

X-2.

 

[Tom48]

I am swapping 2 golf cart batteries for 2 Lithium. Do to the size of the batteries I needed a longer cable. I ordered a 2 gauge wire then after receiving it saw that my existing cables are 2/0. Can I use the 2 gauge with the 2/0?

If the coach is wired with 2/0 cable, I'm wondering what that supports. Mine came new with 2/0 but that feeds a 2000 watt inverter, that is capable of pulling 170 amps and more in surge.

I wired my 3 LiFePo's with 1/0 each to the 2/0. But still I wonder what your coach has going that required only the two GC2's but wired with 2/0

 

[NJKris]

My OEM 1000w inverter is using 2 gauge. You're right Tom, something big must be wired to the 2/0.