<html><head></head><body bgcolor="#FFFFFF"><div>Dan</div><div><br></div><div>I just stacked 5 Xantrex XW-MPPT-600-80 controllers with 10 strings of 10 in series 225W modules (2 strings per controller). The XW PDP accumulated all this wiring to battery back. </div><div><br>Thank you,<div><br></div><div>Maverick</div><div><br></div><div><br></div><div>Maverick Brown</div><div>BSEET, NABCEP Certified Solar PV Installer ®</div><div>President & CEO</div><div>Maverick Solar Enterprises, Inc.</div><div>Office: 512-919-4493</div><div>Cell: 512-460-9825</div><div><br></div>Sent from an iPhone. </div><div><br>On Nov 18, 2011, at 11:49 AM, Exeltech <<a href="mailto:exeltech@yahoo.com">exeltech@yahoo.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font: inherit;">Need info on MPPT/charge controllers able to output up to 500A at 48Vdc.<br>High-voltage DC input (up to 300Vdc) preferred. Units will connect to a<br>20-24 kW PV array and 150 kW-h battery for a large off-grid system.<br>Not locked into 48Vdc. Can go up to 108Vdc (nominal) if needed.<br><br>Any such CC units available?<br><br>If not, what's been the collective Wrench experience in paralleling multiple<br>controllers of whatever max output amperage exists on the market? I realize<br>a paralleled configuration of this nature would entail multiple separate arrays<br>in use on the input. That won't be a problem. Just need to be able to feed<br>the common battery bank.<br><br>Thanks.<br><br>Dan<br><br></td></tr></tbody></table></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>List sponsored by Home Power magazine</span><br><span></span><br><span>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a></span><br><span></span><br><span>Options & settings:</span><br><span><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a></span><br><span></span><br><span>List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a></span><br><span></span><br><span>List rules & etiquette:</span><br><span><a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a></span><br><span></span><br><span>Check out participant bios:</span><br><span><a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a></span><br><span></span><br></div></blockquote></body></html>