<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Perhaps suggesting the correct amp Hr battery bank would eliminate the <i class="">need</i> for buss bar. 2 volt EX1400 1K amp hour batteries work very well good warrantee. all the fusing & interconnects would be eliminated. MORE AHs = less interconnects, always the correct way to go!<div class=""><div><blockquote type="cite" class=""><div class="">On Jul 24, 2018, at 9:40 AM, Dave Tedeyan <<a href="mailto:dtedeyan@taitem.com" class="">dtedeyan@taitem.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Thank you all for the ideas and suggestions. This person in particular had #4 wire for the battery connections, <div class="">so they are all getting replaced with anyway. So it seems like rewiring to a busbar with fuses will be the way to </div><div class="">go. And although not ideal to have so many strings, this will be more cost effective than just getting a whole new </div><div class="">battery bank right off the bat when they have 10 batteries that have essentially never been used.<div class=""><br class=""></div><div class="">Cheers,</div><div class="">Dave<br class=""><div class=""><br class=""></div><div class=""><br class=""></div></div></div></div><div class="gmail_extra"><br clear="all" class=""><div class=""><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><br class=""></div><div class=""><b class=""><font face="arial, helvetica, sans-serif" class="">--</font></b></div><div class=""><b class=""><font face="arial, helvetica, sans-serif" class=""><br class=""></font></b></div><div class=""><b class=""><font face="arial, helvetica, sans-serif" class="">Dave Tedeyan</font><br class=""></b></div><div class=""><b class="">Senior Engineer</b></div><div class=""><br class=""></div><div class=""><b class="">Taitem Engineering, PC</b></div><div class="">10 Verizon Lane, Lansing, NY 14882</div><div class=""><font class="">Voice: <a value="+16072771118" class="">(607) 930-3481 x6</a></font></div><div class=""><a href="http://www.taitem.com/" target="_blank" class=""><font class="">www.taitem.com</font></a></div></div></div></div></div></div></div></div>
<br class=""><div class="gmail_quote">On Mon, Jul 23, 2018 at 8:50 PM, Glenn Burt <span dir="ltr" class=""><<a href="mailto:glenn.burt@glbcc.com" target="_blank" class="">glenn.burt@glbcc.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple" class=""><div class="m_-3523717645421213989WordSection1"><p class="MsoNormal">Hi Christopher,<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">I buy my copper buss material from McMaster Carr in appropriate dimensions for the current I am expecting.<u class=""></u><u class=""></u></p><p class="MsoNormal">I then cut it to the lengths I need, drill for appropriate size fasteners and use 2 layers of heat-shrink tubing to protect the exposed bar.<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">Hope this helps.<u class=""></u><u class=""></u></p><p class="MsoNormal">-Glenn<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal"><b class="">From:</b> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank" class="">re-wrenches-bounces@lists.re-<wbr class="">wrenches.org</a>> <b class="">On Behalf Of </b>Chris Schaefer<br class=""><b class="">Sent:</b> Monday, July 23, 2018 2:28 PM<br class=""><b class="">To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" class="">re-wrenches@lists.re-<wbr class="">wrenches.org</a>><span class=""><br class=""><b class="">Subject:</b> Re: [RE-wrenches] 5 battery strings<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><div class=""><p class="MsoNormal">What source are you all using for buss bars for these multiple battery string set ups?<u class=""></u><u class=""></u></p><div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p></div><div class=""><p class="MsoNormal">Christopher<u class=""></u><u class=""></u></p></div></div><div class=""><div class="h5"><div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p><div class=""><p class="MsoNormal">On Mon, Jul 23, 2018 at 2:16 PM, <<a href="mailto:tom@wagonmaker.com" target="_blank" class="">tom@wagonmaker.com</a>> wrote:<u class=""></u><u class=""></u></p><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in" class=""><p class="MsoNormal">Separate out the individual series strings and run each string to a buss bar setup. Remember it isn't just resistance differences between batteries but resistance difference between cells as well. In a setup like the existing one the resistance differences can really add up and if one battery fails the entire system will be offline. Running each string to a positive and negative common buss bar means you can remove individual strings without disrupting the entire storage and the system can continue operating. Also, it means the only resistance issues of substance are within individual series pairs not the entire interconnected bank.<br class=""><br class="">I ran 10 series pairs of 12v AGM batteries, each pair to a common buss and it was the longest lasting, most stable battery bank I had. That was years ago and now it would require fusing each string but for longevity and stability it is the best bet.<br class=""><br class="">Tom<br class=""><br class="">On 2018-07-23 03:56, Dave Tedeyan wrote:<u class=""></u><u class=""></u></p><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in" class=""><p class="MsoNormal">Since we are on the topic of bad battery practices...<br class=""><br class="">I may be fixing up a system that was both designed and installed very<br class="">poorly.<br class="">They have a 24V Outback VFXR inverter, and ten 12V AGM batteries wired<br class="">into<br class="">5 parallel strings. I know that is a bad idea, but since they already<br class="">have the<br class="">equipment, are there any safety issues by re-using this equipment? It<br class="">is for a<br class="">grid tie battery backup system that will remain in float most of the<br class="">time. I assume<br class="">that the batteries will not last particularly long, but is there any<br class="">harm in using them<br class="">and then just getting new batteries once they fail?<br class=""><br class="">Stringing is shown in the attached picture.<br class="">Cheers,<br class="">Dave<br class=""><br class="">--<br class=""><br class="">Dave Tedeyan<br class=""><br class="">SENIOR ENGINEER<br class=""><br class="">TAITEM ENGINEERING, PC<br class="">10 Verizon Lane, Lansing, NY 14882<br class="">Voice: (607) 930-3481 x6<br class=""><a href="http://www.taitem.com/" target="_blank" class="">www.taitem.com</a> [1]<br class=""><br class="">Links:<br class="">------<br class="">[1] <a href="http://www.taitem.com/" target="_blank" class="">http://www.taitem.com/</a><br class="">______________________________<wbr class="">_________________<br class="">List sponsored by Redwood Alliance<br class=""><br class="">List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" 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