<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr">Hi Mick,</div><div dir="ltr"><br></div><div dir="ltr">Outback and midnite have a common negative design. So what you describe works fine. </div><div dir="ltr">You can connect the PV neg to the main neg buss and then connect to the CC, works fine. Ie only 1 negative connect to the controller. </div><div dir="ltr"><br></div><div dir="ltr">For the Schneider 60-150 controller it doesn\u2019t as it measures on the negative side. So wouldn't work in that configuration </div><div dir="ltr"><br></div><div dir="ltr">I\u2019m with dave on the 80-600.</div><div dir="ltr">I can\u2019t see it as a danger but not sure how the two controllers handle it. </div><div dir="ltr">Would be interesting to see the output!</div><div dir="ltr"><br></div><div dir="ltr">You\u2019re all good</div><div dir="ltr"><br></div><div dir="ltr">Jay</div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br><blockquote type="cite">On Nov 7, 2019, at 2:43 PM, Mick Abraham <mick@abrahamsolar.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="ltr">Greetings, Wrenchies~<div><br></div><div>Matt Sherald's subject today resembles a client inquiry that is on my radar this week--perfect timing!</div><div><br></div><div>Dave Angelini & All~ What if only the PV array negatives are in parallel but the PV positives are divided across more than one charge controller? </div><div>My client is on the Outback platform instead of Schneider, the battery negative is grounded & by extension the PV negatives are also grounded. </div><div>Client has no DC GFI since it's an older installation & he would add three Flexmax 80 controllers; we'll put appropriate DC breakers on each PV+</div><div>& Battery+ controller wire. Client's Mate 1 is old school so the revved up Flexmax 100 (with no built in display) is not of much interest in this case.</div><div><br></div><div>The reason the client needs to share PV negative across the controllers is it's a retrofit situation with some wires in place & no simple</div><div>way to add more. No inspectors are involved & I see no technical problem. Your thoughts?</div><div><br></div><div>The Wrench List is the Bomb!</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Mick Abraham, Proprietor<br><a href="http://www.abrahamsolar.com" target="_blank">www.abrahamsolar.com</a><br><br>Landline: 970-731-4675</div><div>Cell phone or for text messaging: 970-946-6584</div></div></div></div></div></div><div hspace="streak-pt-mark" style="max-height:1px"><img alt="" style="width:0px;max-height:0px;overflow:hidden" src="https://mailfoogae.appspot.com/t?sender=abWlja0BhYnJhaGFtc29sYXIuY29t&type=zerocontent&guid=e85b5771-cf6a-4e71-8576-9af402e183a0" data-unique-identifier=""><font color="#ffffff" size="1">\u1427</font></div>
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