<div dir="auto">Wrenches<div dir="auto">This customer with an orphan PW, not to compromise the factory warranty on the batteries, it would be safest to just grid tie any additional PV and not touch the existing system from the gateway down. </div><div dir="auto">Jerry</div><div dir="auto">NABCEP PV Inspector </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Apr 16, 2021, 8:38 AM Kirk Herander, VSE <kirkh@vermont.solar> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div id="m_-6812765573020596273__MailbirdStyleContent" style="font-size:12pt;font-family:Arial;color:#000000;text-align:left" dir="ltr">Hello all,<div>I am adding more PV to an orphaned Powerwall 2 AC system (which is all new to me), -3- PW's stacked to total about 40kwh of usable storage. it presently has about 13kw of PV, though -2- SMA inverters, feeding into it through a common subpanel between the PW gateway and the main panel. I'm wondering if there is a limit to the amount of PV the powerwall can regulate/backoff (or use for battery charging) during a utility outage. What is the max PW charge rate? I need to add about 10 kw of PV to produce the owners goal of 100% coverage of electrical demand. </div><div>If necessary for safety, i assume the extra pv inverter can be routed to the main panel, and then won't participate in battery charging if the grid goes down. Am I correct? Thanks. The PW manuals are of little use here.<br><div><br></div><div><p class="MsoNormal" style="font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><a name="m_-6812765573020596273__MailAutoSig" rel="noreferrer"><b>Kirk Herander / </b></a><b><a href="mailto:kirkh@vermont.solar" title="Send an email to kirkh@vermont.solar" style="color:blue" target="_blank" rel="noreferrer">kirkh@vermont.solar</a></b><u></u><u></u></span></p><p class="MsoNormal" style="font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b>Owner|Principal, VT Solar, LLC</b><u></u><u></u></span></p><p class="MsoNormal" style="font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b><i>Celebrating our 30<sup>th</sup> Anniversary 1991-2021!!</i></b><u></u><u></u></span></p><p class="MsoNormal" style="font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><a href="https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842843233477645&sdata=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D&reserved=0" title="Click to open in a new window or tab
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