In this case the 4 individual banks are connected to a common buss. All four buss-to-bank cable sets are of identical lenght. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Tom Elliot Sent: Tuesday, June 22, 2010 10:28 AM To: RE-wrenches Subject: Re: [RE-wrenches] For Big Bank Off Grid System Connoisseurs If you have to parallel 4 banks do it through a buss bar, not by interconnecting cells. A few extra cables is a small price to pay for the added stability and easier maintenance. Tom From: Jeff Oldham <mailto:[email protected]> Sent: Tuesday, June 22, 2010 7:14 AM To: [email protected] Subject: Re: [RE-wrenches] For Big Bank Off Grid System Connoisseurs Those HUP batteries are still under warranty and you very well may have a free cell waiting for you, give Rob or Jean a call at NWES and run it past them. They offer 1st rate CS and should take good care of you. You won't get much for used batteries so I would be inclined to keep them in service even though 4 strings in parallel is not ideal. I've had reasonable luck with 4 strings paralleled by getting my battery/inverter cables all over the bank, at the least put 1/2 of your inverters across 2 strings and the other 1/2 on the remaining 2 strings (still parallel all 4 strings). You never mentioned an EQ cycle either, with that limited Absorption time it should happen at least every 6 weeks. >From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative SOLutions ____________________________________________________________ <http://thirdpartyoffers.juno.com/TGL3132/4c20efb95654048a554st06vuc> TODAY: iPads for $23.78? Report: Apple iPads are being auctioned for an incredible 83% off! ConsumerProductsDigest.com <http://thirdpartyoffers.juno.com/TGL3132/4c20efb95654048a554st06vuc> _____ _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _____ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.829 / Virus Database: 271.1.1/2954 - Release Date: 06/21/10 08:36:00
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