<div dir="ltr" gmail_original="1"><div class="gmail_default" style="font-family: arial, helvetica, sans-serif;">Thanks, Vincent. This is the information I needed.</div><div class="gmail_default" style="font-family: arial, helvetica, sans-serif;"><br></div><div class="gmail_default" style="font-family: arial, helvetica, sans-serif;">I did read that at least 1 MCI is needed even if you do not require RSD. The MCI instructions are a bit confusing. I know for RSD you need one at the start of a string and at least one every three modules, but it's unclear if you need the MCI-1 or MCI-2 when using the GW3.</div><div class="gmail_default" style="font-family: arial, helvetica, sans-serif;"><br></div><div class="gmail_default" style="font-family: arial, helvetica, sans-serif;">The reason I was thinking about an off-grid application is I want to use one PW3 in a mobile application (for myself). I was thinking about tricking it into working, but I think it would take a PW3, GW2 or GW3, and an AC source to commission it initially.</div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color: rgb(51, 51, 51); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 13px;">Principal Solar Designer | Florida Solar Design Group</span><br style="color: rgb(51, 51, 51); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 13px;"><span style="color: rgb(51, 51, 51); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 13px;">NABCEP Certified Solar Professional (PVIP)</span><br style="color: rgb(51, 51, 51); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 13px;"><span style="color: rgb(51, 51, 51); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 13px;">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Sep 11, 2024 at 4:18 PM Vincent Jolissaint via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br></div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div dir="ltr"><div style="font-size: small;"><div>(sorry sent the previous reply before it was complete)</div><div>Hi Jason,</div><div><br></div><div>Currently Tesla doesn't allow any totally off-grid installations with PW3 or PW3, they used to support this through the Gateway but no longer do.</div><div><br></div><div>In addition, the Powerwall 3 will require at least a single MCI per string to pass the self test function. This also limits the total string loop length from MPPT+ to MPPT-.</div><div><br></div><div>Powerwall 3 does contain the site controller, but it will require some islanding contactor to function properly.</div><div><br></div><div><p class="MsoNormal"><b><span style="font-size: 10pt; font-family: Arial, sans-serif;"><font color="#0000ff">Vince Jolissaint</font></span><span style="color: rgb(77, 45, 211); font-size: 10pt; font-family: Arial, sans-serif;"> </span><span style="font-size: 10pt; font-family: Arial, sans-serif;"><font color="#000000">|</font></span></b><font color="#000000"><span style="font-size: 10pt; font-family: Arial, sans-serif;"> </span><b><span style="font-size: 10pt; font-family: Arial, sans-serif;">Director of CAD Services</span></b></font><font color="#222222"><u></u><u></u></font></p><p class="MsoNormal"><font color="#444444"><span style="font-size: 10pt; font-family: Arial, sans-serif;">2557 Wyandotte Street | Mountain View, CA 94043</span><span style="font-family: Arial, sans-serif;"><br></span><span style="font-size: 10pt; font-family: Arial, sans-serif;">Office: 650.938.9574 | Email:</span><span style="font-size: 10pt; font-family: Arial, sans-serif;"> </span><span style="font-size: 10pt; font-family: Arial, sans-serif;"><a href="mailto:vincentj@cobaltpower.com" target="_blank">vincentj@cobaltpower.<wbr>com</a></span></font></p></div><div><br></div><div>>From: Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" target="_blank">jason@<wbr>floridasolardesigngroup.com</a>></div><div>>To: RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-<wbr>wrenches.org</a>><br>>Subject: [RE-wrenches] Powerwall 3<br>>Message-ID:<br> > <CAE438R9LWo_<wbr>VNuTTkOzVbv62LST3_Bf4-x7VfLm=-<a href="mailto:Rkk6k%2BwJw@mail.gmail.com" target="_blank"><wbr>Rkk6k+wJw@mail.gmail.com</a>><br>>Content-Type: text/plain; charset="utf-8"<br><br>>Certified Powerwall installers,<br><br>>Can the PW3 be commissioned for for a completely off-grid system with DC<br>>coupled solar panels with no MCIs. If so, do you need a Gateway 2/3, or can<br>>it operate autonomously in this scenario without a Gateway?<br>><br>>Jason Szumlanski<br>>Florida Solar Design Group</div></div><div style="font-size: small;"><br></div><div style="font-size: small;"><br></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><p class="MsoNormal"><b><span style="font-size: 10pt; font-family: Arial, sans-serif;"><font color="#0000ff"><span class="gmail_default" style="font-size: small;"></span></font></span></b></p><p class="MsoNormal"><font color="#444444"></font></p><p class="MsoNormal" style="color: rgb(34, 34, 34);"><br></p><p class="MsoNormal" style="color: rgb(34, 34, 34);"><img src="https://ci3.googleusercontent.com/meips/ADKq_NYyrS6RofltBUHUSIQy0DQoaeJEEJsfGMzwioB0sV1KMW1aBizCOo6t1WDPbr4TW63jyVqegVwle2gFmUFljs_UAas5w4jLLRcc2-Hf8kHM1WOO=s0-d-e1-ft#https://www.cobaltpower.com/images/logos/Transparent-Logo.png" width="200" height="55" jslog="138226; u014N:xr6bB; 53:WzAsMF0."><br></p></div></div></div></div>
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