<div dir="auto">Thanks, Nick. That is definitely an advantage that I didn't consider I suppose. You're talking about the AC rating limit (microinverter combined output). I think it would be rare around here because small battery systems are not appropriate for central air conditioning backup. Most of the systems we install are 40kWh, and that's cutting it very close for most homes. <div dir="auto"><br></div><div dir="auto">If my math is right, that allows about 23kW of PV (AC) with the IQ7 series before you exceed the limit. We did one maxed out system with 66 x 415W panels with IQ7A. We would be hard pressed to find a scenario where more PV is necessary while 40kWh of battery capacity is sufficient. <div dir="auto"><br></div><div dir="auto">While on the subject, it is important to note that only 80A of PV OCPD can land on the smart controller busbar. In the application above, that meant 44 microinverters. The other 22 had to be feeder tapped on the load side of the smart controller. That is not exactly an elegant solution. Totally irrelevant to this conversation, but interesting to note.</div><div dir="auto"><br></div><div dir="auto">I'm finding a lot of competitors in my market offering the IQ8 series without sunlight backup and I have been scratching my head as to why. I have been explaining to clients that it is not necessary to incur the extra expense, but that is a hard sell when someone else is telling them they are getting the latest and greatest. I don't want to roll over and join them, but I also don't want to miss an important benefit that I haven't considered. </div><div dir="auto"><br></div><div dir="auto">Jason</div><div dir="auto"><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jul 12, 2022, 7:03 PM Nick Soleil 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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That is correct, Jay. You only need the rapid shutdown switch if you have IQ 8s and an IQ System Controller.</div>
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One of the big advantages of the IQ 8 over IQ 7 when paired with storage is that the 1.5 PV to storage ratio does not apply, so you can install larger PV systems with smaller battery systems. </div>
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<div><span style="font-size:small;color:rgb(34,34,34);font-family:arial,sans-serif">Cordially,</span><br>
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<p dir="ltr" style="margin-top:0px;margin-bottom:0px;line-height:1.38;margin-top:0pt;margin-bottom:0pt">
<span style="font-size:10pt;font-family:Arial;color:rgb(102,102,102);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">Nick Soleil</span></p>
<p dir="ltr" style="margin-top:0px;margin-bottom:0px;line-height:1.38;margin-top:0pt;margin-bottom:0pt">
<span style="font-size:10pt;font-family:Arial;color:rgb(230,145,56);font-weight:700;vertical-align:baseline;white-space:pre-wrap;background-color:transparent">Enphase Energy</span><span style="font-size:10pt;font-family:Arial;color:rgb(102,102,102);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">
Senior Product Manager</span></p>
<span style="font-size:10pt"></span>
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<span style="font-size:10pt;font-family:Arial;color:rgb(102,102,102);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">(707) 763-4784 x7267 // office</span></p>
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<span style="font-size:10pt;font-family:Arial;color:rgb(102,102,102);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">(707) 321-2937 // cell</span></p>
<p dir="ltr" style="margin-top:0px;margin-bottom:0px;line-height:1.38;margin-top:0pt;margin-bottom:0pt">
<a href="https://enphase.com/en-us/products-and-services/envoy" style="font-family:arial,sans-serif;font-size:13px" target="_blank" rel="noreferrer"><b style="font-size:large">Powering What\u2019s Next</b><font face="arial, helvetica, sans-serif">\u2122</font><font size="4"><i> | </i>The
Enphase Energy Management System</font></a><br>
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<p style="margin-top:0px;margin-bottom:0px;color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;margin:0in 0in 0.0001pt">
NABCEP Certified Solar PV Installer #03262011-300</p>
<p style="margin-top:0px;margin-bottom:0px;color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;margin:0in 0in 0.0001pt">
California C10 Licensed Electrician #986315</p>
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<div id="m_-4447150948530717766divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><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>> on behalf of Jay via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>><br>
<b>Sent:</b> Tuesday, July 12, 2022 3:54 PM<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> Jay <<a href="mailto:jay.peltz@gmail.com" target="_blank" rel="noreferrer">jay.peltz@gmail.com</a>><br>
<b>Subject:</b> Re: [RE-wrenches] Enphase IQ7 versus IQ8</font>
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<div dir="ltr">Hi Jason</div>
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<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>
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<div dir="ltr">Jay</div>
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<blockquote type="cite">On Jul 12, 2022, at 3:25 PM, Jason Szumlanski via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br>
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<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.
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<div dir="ltr">On Tue, Jul 12, 2022, 5:15 PM Mark Frye via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br>
</div>
<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Do you need the additional switch if you use the Enphase battery?<u></u><u></u></p>
<p><u></u> <u></u></p>
<div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in">
<p><b>From:</b> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">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" rel="noreferrer noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>><br>
<b>Cc:</b> Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" rel="noreferrer noreferrer" target="_blank">jason@floridasolardesigngroup.com</a>><br>
<b>Subject:</b> [RE-wrenches] Enphase IQ7 versus IQ8<u></u><u></u></p>
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<p><u></u> <u></u></p>
<div>
<p>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><u></u> <u></u></p>
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<p>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><u></u> <u></u></p>
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<p>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><u></u> <u></u></p>
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<p>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><u></u> <u></u></p>
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<p>Jason Szumlanski<u></u><u></u></p>
</div>
<div>
<p>Florida Solar Design Group <u></u><u></u></p>
</div>
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