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.
On Tue, Jul 12, 2022, 5:15 PM Mark Frye via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Do you need the additional switch if you use the Enphase battery? > > > > *From:* RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> *On > Behalf Of *Jason Szumlanski via RE-wrenches > *Sent:* Tuesday, July 12, 2022 11:38 AM > *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org> > *Cc:* Jason Szumlanski <ja...@floridasolardesigngroup.com> > *Subject:* [RE-wrenches] Enphase IQ7 versus IQ8 > > > > 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. > > > > 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. > > > > Am I missing something about the switching speed, energy harvest > capability, or the way they interact with batteries that makes them better? > > > > 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. > > > > Jason Szumlanski > > Florida Solar Design Group > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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