Homeruns from big battery bank [RE-wrenches]

Jay Peltz, Peltz Power jay at asis.com
Tue Sep 4 20:02:29 PDT 2007


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Hi Andrew,

I think the issue is that you need more copper on the longer run, to  
account for voltage drop loss.

I just had a similar problem.  The batteries were laid out with the  
positive cable 2.5' from breakers and the negative about 15'.
I ran 2x 4/0 for the (+) and 3 x 4/0 for the (-), works fine.

Of course how much copper you need to run depends on just how big the  
inverters/loads are.

jay

Peltz power


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