<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta content="text/html;charset=UTF-8" http-equiv="Content-Type"></head><body ><div style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10pt;"><div>Sorry yes for clarification that he wants to parallel the INPUTS I am aware of paralleling the outputs we do that all the time. Sorry for the confusion but seems like the census now says NO on paralleling the 2 inputs from one array. </div><div><br></div><div id="Zm-_Id_-Sgn" data-sigid="4634369000000023001" data-zbluepencil-ignore="true"><p class="MsoPlainText" style="line-height:1"><span style="">Andrew Perkins</span><br></p><p class="MsoPlainText" style="line-height:1"><span style="">Greenwired </span><br></p><p class="MsoPlainText" style="line-height:1"><span style="">P: 707-923-2001 ext. 100</span><br></p><p class="MsoPlainText" style="line-height:1"><span style="">1150 #1 Evergreen Rd</span><br></p><p class="MsoPlainText" style="line-height:1"><span style="">Redway, CA 95560</span><br></p><div><span style=""><a href="http://www.greenwired.com" target="_blank">www.greenwired.com</a></span><br></div><div style="line-height:1"><br><img style="" height="30" width="150" src="cid:0.28869225360.7119698216060934051.18f547648cb__inline__img__src"></div><div style="line-height:1"><span class="colour" style="color:rgb(203, 204, 0)"><span class="font" style="font-family:arial, helvetica, sans-serif"><br></span></span><br><br></div></div><div><br></div><div class="zmail_extra_hr" style="border-top: 1px solid rgb(204, 204, 204); height: 0px; margin-top: 10px; margin-bottom: 10px; line-height: 0px;"><br></div><div class="zmail_extra" data-zbluepencil-ignore="true"><div><br></div><div id="Zm-_Id_-Sgn1">---- On Tue, 07 May 2024 11:58:37 -0700 <b>Howie Michaelson via RE-wrenches <re-wrenches@lists.re-wrenches.org></b> wrote ---<br></div><div><br></div><blockquote id="blockquote_zmail" style="margin: 0px;"><div><div dir="ltr"><div class="x_856546575gmail_default" style="font-family: verdana, sans-serif">Yes, output not input. Thanks for clarifying that William...<br></div><div class="x_856546575gmail_default" style="font-family: verdana, sans-serif">Howie<br></div><div><div><br><div><div dir="ltr" class="x_856546575gmail_signature"><div dir="ltr"><span><span><span><span><span class="colour" style="color:#888888"><span class="colour" style="color:rgb(106, 168, 79)"><b>Sun Catcher</b></span></span></span></span></span></span><span><span><span class="colour" style="color:#888888"><span class="colour" style="color:rgb(0, 0, 255)"><b><span class="size" style="font-size:10px"><i><br></i></span></b></span></span></span><span><span><span class="colour" style="color:#888888"><span class="colour" style="color:rgb(120, 63, 4)"></span></span></span></span></span><span><span><span><span class="colour" style="color:#888888"><span class="colour" style="color:rgb(120, 63, 4)"><b><img id="1715108367655110003_imgsrc_url_0"><br></b></span></span></span></span><span><span class="colour" style="color:#888888"><span class="colour" style="color:rgb(0, 0, 255)"><b><span class="size" style="font-size:10px"><i></i></span></b></span></span></span><span><span class="colour" style="color:#888888"><span class="colour" style="color:rgb(68, 68, 68)"><span class="highlight" style="background-color:rgb(255, 255, 255)"><span class="size" style="font-size:13px"><span class="colour" style="color:rgb(32, 18, 77)"><b><span><span><span class="colour" style="color:rgb(68, 68, 68)"><span class="highlight" style="background-color:rgb(255, 255, 255)"><span class="size" style="font-size:13px">Solar Electric Systems Sales & Service<br></span></span></span><span class="colour" style="color:rgb(180, 95, 6)">802-272-0004</span></span></span></b></span></span></span></span></span></span></span></div></div></div></div></div><br></div><br><div class="x_856546575gmail_quote"><div dir="ltr" class="x_856546575gmail_attr">On Tue, May 7, 2024 at 2:55 PM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="x_856546575gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex"><div class="x_856546575msg-2378070181044821727"><div><div class="x_856546575m_-2378070181044821727WordSection1"><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif"">Andrew:</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif""> </span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif"">I see no problem paralleling the Charge Controller outputs but I would not parallel the inputs. With parallel inputs, unless there is protection to prevent excessive current, there is a risk that one CC will take over and try to regulate the entire array.</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif""> </span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif"">I suggest you divide up the panels to create one appropriately sized discrete array into each CC. You can parallel two strings of panels without OCPD.</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif""> </span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif"">William</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif""> </span></span><br></p><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Arial, "sans-serif"">Miller Solar</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Arial, "sans-serif"">17395 Oak Road, Atascadero, CA 93422</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Arial, "sans-serif"">805-438-5600</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Arial, "sans-serif""><a href="http://www.millersolar.com/" target="_blank"><span class="colour" style="color:blue">www.millersolar.com</span></a></span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Arial, "sans-serif"">CA Lic. 773985</span></span><br></p><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Calibri, "sans-serif""><span class="size" style="font-size:11pt"> </span></span></span><br></p></div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="colour" style="color:rgb(31, 73, 125)"><span class="font" style="font-family:Verdana, "sans-serif""> </span></span><br></p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentcolor currentcolor; padding: 3pt 0in 0in"><p class="" style="margin-top: 0px; margin-bottom: 0px;"><b><span class="font" style="font-family:Tahoma, "sans-serif""><span class="size" style="font-size:10pt">From:</span></span></b><span class="font" style="font-family:Tahoma, "sans-serif""><span class="size" style="font-size:10pt"> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Andrew Perkins via RE-wrenches<br><b>Sent:</b> Tuesday, May 7, 2024 9:24 AM<br><b>To:</b> Re Wrenches<br><b>Cc:</b> Andrew Perkins<br><b>Subject:</b> [RE-wrenches] PWM Controllers in parallel</span></span></p></div></div><p class="" style="margin-top: 0px; margin-bottom: 0px;"> <br></p><div><div><div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt">Hello Wrenches,</span></span><br></p></div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"> I have a client who has a large 2000 watt 12v array that he said used to be hooked into an internal solar charger on his old trace. Never seen a trace with one of those in it but he claims it could do 200a. This internal charger has now died and needs a replacement. He is refusing to rewire his panels into a new configuration and their aren't many options for him out there. I did get him a Coleman Aire 400a Charge controller but it is more of a load controller and wants to be able to properly absorb is batteries off the sun. He currently has a c60 running only part of the array and now he is asking about running another c60 in parallel. Not quite sure if this would work or not but my gut feeling says no and there will be problems. </span></span><br></p></div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"> </span></span><br></p></div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt">If anyone knows of any controllers that would fit that or if running those in parallel works your advice would be greatly appreciated. </span></span><br></p></div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"> </span></span><br></p></div><div><div id="x_856546575m_-2378070181044821727x_1415189516"><p class="x_856546575m_-2378070181044821727x1415189516msoplaintext"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt">Andrew Perkins</span></span><br></p><p class="x_856546575m_-2378070181044821727x1415189516msoplaintext"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt">Greenwired</span></span><br></p><p class="x_856546575m_-2378070181044821727x1415189516msoplaintext"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt">P: 707-923-2001 ext. 100</span></span><br></p><p class="x_856546575m_-2378070181044821727x1415189516msoplaintext"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt">1150 #1 Evergreen Rd</span></span><br></p><p class="x_856546575m_-2378070181044821727x1415189516msoplaintext"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt">Redway, CA 95560</span></span><br></p><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"><a href="http://www.greenwired.com" target="_blank">www.greenwired.com</a></span></span><br></p></div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"><br><img border="0" width="150" height="30" src=""></span></span></p></div><div><p class="" style="margin-bottom: 12pt; margin-top: 0px;"><span class="colour" style="color:rgb(203, 204, 0)"><span class="font" style="font-family:Arial, "sans-serif""><span class="size" style="font-size:10pt"><br><br></span></span></span><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"></span></span></p></div></div></div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"> </span></span><br></p></div></div></div><div><p class="" style="margin-top: 0px; margin-bottom: 0px;"><span class="font" style="font-family:Verdana, "sans-serif""><span class="size" style="font-size:10pt"> </span></span><br></p></div></div><p class="" style="margin-top: 0px; margin-bottom: 0px;"> <br></p></div></div>_______________________________________________<br> List sponsored by Redwood Alliance<br> <br> Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank">http://re-wrenches.org</a><br> <br> List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br> <br> Change listserver email address & settings:<br> <a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br> <br> There are two list archives for searching. 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