<div dir="auto">Hi William,</div><div dir="auto"><br></div><div dir="auto">Each Powerwall can accept 5 kW of continuous charge and 7 kW peak for 10 seconds. These values increase respectively with additional units (i.e. 10kW continuous for 2 units, 15kW for 3 etc). It\u2019s my understanding that each unit can accept 7.6 kW of AC coupled PV. If PV is generating more than 5 kW for greater than 10 seconds , the Powerwall will frequency shift and turn off PV output. IMO not ideal to oversized a PV array greater than 5kW per unit for this reason. </div><div dir="auto"><br></div><div dir="auto">No great solution for incorporating a generator to recharge batteries. </div><div dir="auto"><br></div><div dir="auto">Also, the last time I checked, the warranty for a system without internet connection is cut in half. </div><div dir="auto"><br></div><div dir="auto">I have never installed a Powerwall in an off-grid scenario and don\u2019t see a real argument for it. However, the 200A transfer switch, stack-ability and generally lower cost do make it a reasonable option for grid-tied whole home back up. </div><div dir="auto"><br></div><div dir="auto">Kindly,</div><div dir="auto"><br></div><div dir="auto">Chris </div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Apr 28, 2022 at 9:02 PM Marco Mangelsdorf via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div dir="ltr"><div dir="ltr"><font size="4" style="color:rgb(0,0,0)">Max rating of the Gateway2 is 200A.</font><div><font size="4" style="color:rgb(0,0,0)"><br></font></div><div><font size="4" style="color:rgb(0,0,0)">Regarding a generator input, you're correct, there's no means that I'm aware of to integrate a backup generator with the Tesla equipment that would interact with the solar and storage.</font></div></div></div><div dir="ltr"><div dir="ltr"><div><font size="4" style="color:rgb(0,0,0)">marco</font></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Apr 28, 2022 at 5:45 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="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div lang="EN-US"><div><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif">Friends:</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif">I have two questions about AC coupling Tesla systems:</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p><p style="margin-bottom:12pt"><span style="font-size:12pt;font-family:Verdana,sans-serif"><span style="font-family:Verdana,sans-serif">1.<span style="font-style:normal;font-variant-caps:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span></span></span><span style="font-size:12pt;font-family:Verdana,sans-serif">Are there limits on how much power can be AC coupled through a Tesla gateway? Does it depend on the quantity of power-walls connected?</span></p><p style="margin-bottom:12pt"><span style="font-size:12pt;font-family:Verdana,sans-serif"><span style="font-family:Verdana,sans-serif">2.<span style="font-style:normal;font-variant-caps:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span></span></span><span style="font-size:12pt;font-family:Verdana,sans-serif">I understand a Tesla system does not have a separate generator input so if a generator is to be incorporated, a transfer switch is required upstream of the sole AC input. If the generator were to start on a sunny day, would the gateway protect the generator from receiving sell amps from the AC coupled inverters?</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif">Thanks in advance for any information that you are allowed to share.</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif">Sincerely,</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif">William Miller</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">Miller Solar</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">805-438-5600</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif"><a href="http://www.millersolar.com/" target="_blank" style="font-family:Arial,sans-serif">www.millersolar.com</a></span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif">CA Lic. 773985</span></p><p class="MsoNormal"> </p><p class="MsoNormal"> </p></div></div>
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</blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div>Chris Sparadeo</div><div><br></div><div><br></div><div>C_802-369-4458</div><div>H_802-728-3059</div><div></div></div></div></div></div></div>