<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">Hi Jason</div><div dir="ltr"><br></div><div dir="ltr">And if you don\u2019t have the smart controller/battery system then you do not need this proprietary rapid shut down switch correct?</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><blockquote type="cite">On Jul 12, 2022, at 3:25 PM, Jason Szumlanski via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="auto">Yes, they require a proprietary rapid shutdown switch that connects to the smart controller. This would be in addition to a visible load break disconnect if the utility requires it. You cannot fulfill both requirements with one switch, and it requires a line voltage circuit be run from the smart controller to the rapid shutdown switch. <div dir="auto"><br></div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jul 12, 2022, 5:15 PM Mark Frye 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:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">Do you need the additional switch if you use the Enphase battery?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><b>From:</b> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches-bounces@lists.re-wrenches.org</a>>
<b>On Behalf Of </b>Jason Szumlanski via RE-wrenches<br>
<b>Sent:</b> Tuesday, July 12, 2022 11:38 AM<br>
<b>To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>><br>
<b>Cc:</b> Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" target="_blank" rel="noreferrer">jason@floridasolardesigngroup.com</a>><br>
<b>Subject:</b> [RE-wrenches] Enphase IQ7 versus IQ8<u></u><u></u></p>
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<p class="MsoNormal">I am trying to figure out why it is a good idea we use the IQ8 in anything other than a solar only backup scenario. If there are Enphase batteries involved, wouldn't the IQ7 do the same job on the roof? In a straight grid tied scenario,
again the IQ7 would do the exact same thing. You would not have an upgrade path to solar only backup, of course.<u></u><u></u></p>
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<p class="MsoNormal">I'm just having a hard time understanding the value proposition of the IQ8 in most of the situations I encounter. They cost significantly more, and you need an additional rapid shutdown switch when using batteries that can be quite a pain
in some scenarios.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Am I missing something about the switching speed, energy harvest capability, or the way they interact with batteries that makes them better?<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">P.S. I am aware of the very small power output differences by model number and I am referring exclusively to 240 volt applications. I understand the 208 volt advantages of the IQ8. <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Jason Szumlanski<u></u><u></u></p>
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<p class="MsoNormal">Florida Solar Design Group <u></u><u></u></p>
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