Battery cable size, need help with please.

[sjturbo]

I am putting together four series/parallel GC batteries and need some help with cable sizing. Batteries are all side by side, converter will be within 3'of batteries, inverter should be within 4', but the DC fuse board is 15' to 17' away. Am I correct that all "series" lengths need to be the same. And the same for the parallel lengths? And the lengths from the batteries to the converter and inverter?

[ken_white]

Depending on distance between inverter - batteries and converter - batteries, you may be able to use larger wire gauges and still have excellent performance.

This will save money and the cables will be easier to work with and fish through spaces...

[MEXICOWANDERER]

Even at 30' total feeder length what smkettner recommends will lead to extremely low voltage drop. You will experience a stronger water pump and brighter incandescent lights.

[mena661]

smkettner wrote:
DC fuse board s/b fine with existing. If pulling wire go with #6 wire. Maybe #4 if you want to kill it.

I would go #4 for that converter/inverter combo. Same for interconnects.

X2

[time2roll]

DC fuse board s/b fine with existing. If pulling wire go with #6 wire. Maybe #4 if you want to kill it.

I would go #4 for that converter/inverter combo. Same for interconnects.

[sjturbo]

Thanks for the replies. The converter is a PD9270 and the inverter (not purchased yet), will likely be a 600 watt pure sine wave. The manual only indicates that the output terminals are rated for 2 to 14ga copper wire. They likely don't recommend a specific gauge for liability reasons.

[beemerphile1]

sjturbo wrote:
I am putting together four series/parallel GC batteries and need some help with cable sizing. Batteries are all side by side, converter will be within 3'of batteries, inverter should be within 4', but the DC fuse board is 15' to 17' away. Am I correct that all "series" lengths need to be the same. And the same for the parallel lengths? And the lengths from the batteries to the converter and inverter?

What size inverter? What size converter? Give us something to work with.

[time2roll]

I used 4/0 to the inverter and 2/0 battery interconnects.

http://www.genuinedealz.com/custom-cables

[ken_white]

Power/return cable size really depends on the current through the cable and acceptable voltage loss across the cable branch. So without some specific load and equipment details, any advice will only be a guess.

[2oldman]

What does your inverter manual recommend?