<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"></div><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">It depends on climate, orientation, and other factors. Here it is really hot almost all the time. We rarely experience anything close to the max power rating of a module here. If the orientation isn't ideal, that's another argument for oversizing. Around here we use 385 and 390W 72-cell modules on the 290W IQ7+ and rarely see clipping that would outweigh the advantages and cost-efficiency. Incidentally, early indications from some low temp coefficient 360W modules show that they do quite well compared to 385W modules with more standard coefficients this time of year. I need more data on that to make a real assessment. And modules with low temp coefficients tend to be pricey.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I am very comfortable with 1.3x - 1.4x here in Southwest Florida using standard modules. Elsewhere I would expect the ratio to be somewhat lower. I have no justification for the IQ7A here at this time.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">P.S. My CED Greentech rep shared some Helioscope data using the IQ7 (not plus) and 360W 120-half-cell REC Alphas. There is only a marginal advantage to using the IQ7+ over the IQ7 in that scenario here. I still opt for the IQ7+ since it is marginally better when considering cost and performance and it is more compatible/flexible. Since it's the same max quantity per string, I don't see the point in dropping to the IQ7 for the price difference.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Jason Szumlanski</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Florida Solar Design Group</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Oct 3, 2020 at 8:08 PM Jay <<a href="mailto:jay.peltz@gmail.com">jay.peltz@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi all<br>
<br>
For those working with Enphase. <br>
How hard are people recommending pushing the DC/AC ratio?<br>
<br>
Enphase has some pretty convincing data that even a 400 watt module on a 240watt inverter has very small clipping vs annual production <br>
<br>
Given that why would i recommend to a customer the IQ7A at 360va and quite a bit more expensive vs the 240va IQ7? <br>
Location would have something to do of course, tilt, yes. <br>
But it seems that unless you\u2019re installing a really large module or their data is wrong, I\u2019m not sure I see the advantage of the larger inverter?<br>
<br>
I\u2019m hoping there will be some counter views. <br>
<br>
Thanks<br>
Jay<br>
Peltz power. <br>
<br>
<br>
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