[RE-wrenches] Enphase IQ7 versus IQ8

[Jay]

Hi Jason

And if you don’t have the smart controller/battery system then you do not need this proprietary rapid shut down switch correct?

Jay



> On Jul 12, 2022, at 3:25 PM, Jason Szumlanski via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> 
> 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 at lists.re-wrenches.org> wrote:
>> Do you need the additional switch if you use the Enphase battery?
>> 
>>  
>> 
>> From: RE-wrenches <re-wrenches-bounces at 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 at lists.re-wrenches.org>
>> Cc: Jason Szumlanski <jason at 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 at 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
>> 
> _______________________________________________
> List sponsored by Redwood Alliance
> 
> Pay optional member dues here: http://re-wrenches.org
> 
> List Address: RE-wrenches at 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
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20220712/7f6e2a5c/attachment.htm>