<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>thanks David, Well spoken (I would add the words after "</span><span style="font-family: Verdana, sans-serif; font-size: 12pt; ">, you have many strings of 3 modules in series" the words (connected in parallel)"</span></div><div style="color: rgb(0, 0, 0); font-size: 12pt; font-family: Verdana, sans-serif; background-color: transparent; font-style: normal; "><span style="font-family: Verdana, sans-serif; font-size: 12pt; "><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Verdana, sans-serif; background-color: transparent; font-style: normal; "><span style="font-family: Verdana, sans-serif; font-size: 12pt; ">I have found one other tigo trick, If you are supplying an inverter with a short string, and some modules or even one module is shaded the inverter can drop out of MPPT range of the
modules greatly reducing the power of the string. So you have to do string sizing with reduced voltage from the Tigo's in mind. </span></div><div style="color: rgb(0, 0, 0); font-size: 12pt; font-family: Verdana, sans-serif; background-color: transparent; font-style: normal; "><span style="font-family: Verdana, sans-serif; font-size: 12pt; "><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Verdana, sans-serif; background-color: transparent; font-style: normal; "><span style="font-family: Verdana, sans-serif; font-size: 12pt; ">Darryl, </span></div><div style="color: rgb(0, 0, 0); font-size: 12pt; font-family: Verdana, sans-serif; background-color: transparent; font-style: normal; "><span style="font-family: Verdana, sans-serif; font-size: 12pt; ">BTW I am out of hospital after 90 days looking forward to full recovery by spring, Hi everyone, I seem to have made it. </span><span style="font-size:
12pt; "> </span></div><div><span><br></span></div><div><br></div> <div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; "> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> David Katz <dkatz@aeesolar.com><br> <b><span style="font-weight: bold;">To:</span></b> RE-wrenches <re-wrenches@lists.re-wrenches.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, October 17, 2012 11:34 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [RE-wrenches] Tigo Tech Support Response<br> </font> </div> <br>
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--></style><div><div class="yiv766726657WordSection1"><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">Larry and Dan,</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">Jacob’s response is a bit misleading. Tigo Maximizers operate in the buck mode, by lowering the voltage of a shaded module and increasing the current to match other modules in a string, so the unshaded modules are not affected. If you use Maximizers in an off grid situation, you must still have enough voltage to charge the battery. If you are using a typical 150 vdc input charge controller with 3 modules in series, you could still charge the battery on the voltage of 2-1/2 modules in series. More typically in an off grid system, you have many strings of 3 modules in series. If one has a lower voltage because of Maximizer operation, it will be ignored by the charge controller which
will be tracking the full voltage strings.</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">If you want to use Maximixers in an off grid situation, I suggest using them with a Xantrex 600 vdc charge controller and one or two strings of modules.</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; "> </span></div><div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">David Katz</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">CTO & Founder</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">AEE Solar Inc</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">P: 707 825-1200</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">F: 707
825-1202</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; ">dkatz@aeesolar.com</span></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; "><a target="_blank" href="http://www.aeesolar.com/">www.aeesolar.com</a></span></div><div class="yiv766726657MsoNormal" style=""><span style="font-size: 8pt; font-family: Verdana, sans-serif; ">DISCLAIMER: <br>This communication, along with any documents, files or attachments, is intended for the use of only the addressee and contains privileged and confidential information. If you are not the intended recipient, you are hereby notified that any dissemination, distribution or copying of any information contained in or attached to this communication is strictly prohibited. If you have received this message in error, please notify the sender immediately by e-mail reply and destroy the original communication and its attachments
without reading, printing or saving in any manner.</span></div><div class="yiv766726657MsoNormal" style=""><span style="font-family: Arial, sans-serif; "> </span></div></div><div class="yiv766726657MsoNormal"><span style="font-family: Verdana, sans-serif; "> </span></div><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in;"><div class="yiv766726657MsoNormal"><b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; ">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; "> re-wrenches-bounces@lists.re-wrenches.org [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Larry Crutcher, Starlight Solar Power Systems<br><b>Sent:</b> Wednesday, October 17, 2012 7:16 AM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Tigo Tech Support Response</span></div></div></div><div class="yiv766726657MsoNormal"> </div><div
class="yiv766726657MsoNormal">Dan,</div><div><div class="yiv766726657MsoNormal"> </div></div><div><div class="yiv766726657MsoNormal">Thanks for posting this. I am fascinated and puzzled with their response. Why would they not advertise this point? I see nothing on their site that suggests the Module Maximizer functions with off-grid PV systems. Many battery based systems that we have installed over the years certainly could benefit from their technology and the monitoring.</div></div><div><div class="yiv766726657MsoNormal"> </div></div><div><div class="yiv766726657MsoNormal">Has anyone ever used the Tigo Maximizers with a battery based system?</div><div><div><div><div><div><div class="yiv766726657MsoNormal"><span style="font-size: 13.5pt; font-family: Helvetica, sans-serif; color: black; "><br>Larry Crutcher</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 13.5pt; font-family: Helvetica, sans-serif; color:
black; ">Starlight Solar Power Systems</span></div></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 13.5pt; font-family: Helvetica, sans-serif; color: black; "> </span></div></div></div></div><div class="yiv766726657MsoNormal"><span style="font-size: 13.5pt; font-family: Helvetica, sans-serif; color: black; "><br><br></span></div></div><div class="yiv766726657MsoNormal"> </div><div><div><div class="yiv766726657MsoNormal">On Oct 16, 2012, at 5:25 PM, <<a rel="nofollow" ymailto="mailto:dan@foxfire-energy.com" target="_blank" href="mailto:dan@foxfire-energy.com">dan@foxfire-energy.com</a>> <<a rel="nofollow" ymailto="mailto:dan@foxfire-energy.com" target="_blank" href="mailto:dan@foxfire-energy.com">dan@foxfire-energy.com</a>> wrote:</div></div><div class="yiv766726657MsoNormal"> </div><div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color:
black; ">Hi Guys, following is the response from Tigo on the question of using their optimizers for battery charging:</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">Hello Dan</span></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">Thank you for the phone call yesterday. I have answers to some of your questions.</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div
class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">- At the moment, we only sell arc fault detection services to combiner box manufacturers to incorporate into their combiner boxes. However, in a short amount of time (estimates say about a month), we will offer string level arc fault detection.</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">- The maximizers will work just fine with batteries/charge controllers ONLY if the battery/charge controller has an MPPT input. There are those out there that do not have this type of input, so be sure to purchase accordingly. </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size:
10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">- We do offer module level monitoring.</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">Thanks and let me know if you have any other questions!<br clear="all"></span></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">--------------------------------- <br>Regards,</span></div><div><div
class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">Jacob Jackson</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">Tech Support Engineer</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; ">Tigo Energy</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div></div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "> </span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt;
font-family: Verdana, sans-serif; color: black; ">db</span></div></div><div><div class="yiv766726657MsoNormal"><span style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "><br>Dan Brown<br>Foxfire Energy Corp.<br>Renewable Energy Systems<br>(802)-483-2564<br><a rel="nofollow" target="_blank" href="http://www.foxfire-energy.com/">www.Foxfire-Energy.com</a><br>NABCEP #092907-44</span></div></div></div><div class="yiv766726657MsoNormal" style="margin-bottom:12.0pt;">_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address: <a rel="nofollow" ymailto="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Options & settings:<br>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<br><br>List-Archive:
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