[RE-wrenches] single string of batts: must the interconnects beinverter size cables?

[Warren Lauzon]

Just for info, here is a good example of how and how not to wire up 
batteries for balanced amperage draw 
http://www.smartgauge.co.uk/batt_con.html


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Northern Arizona Wind & Sun - Electricity From The Sun Since 1979
Solar Discussion Forum: http://www.wind-sun.com/ForumVB/
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----- Original Message ----- 
From: "Doug Wells" <dwells at thesolarspecialists.com>
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Sent: Saturday, February 20, 2010 7:15 AM
Subject: Re: [RE-wrenches] single string of batts: must the interconnects 
beinverter size cables?


>I have always used 4/0 through out the bank.
> I guess that I have had to replace to many dead batteries at this point.
> If you are under sizing the parallel strings, what happens when a cell 
> fails?  or 2 cells fail.
> Now all the current would be carried by one string.
> If you are running equal lengths to a buss bar, it might make sense to 
> put a current limiting fuse on each parallel run before the bus.
> However, this would pretty much negate any money save on downsizing  the 
> copper.
> So what is really gained?
>
> Doug Wells
> The Solar Specialists
> Morrisville, VT 05661
> (p) 802-223-7014
> (c) 802-498-5856
> www.thesolarspecialists.com
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