date:20220712

Re: [RE-wrenches] Enphase IQ7 versus IQ8

2022-07-12 Thread Jason Szumlanski via RE-wrenches

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.

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.

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.

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.

Jason

On Tue, Jul 12, 2022, 7:03 PM Nick Soleil via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> That is correct, Jay.  You only need the rapid shutdown switch if you have
> IQ 8s and an IQ System Controller.
>
> 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.
>
> Cordially,
>
> Nick Soleil
>
> Enphase Energy Senior Product Manager
>
> (707) 763-4784 x7267  // office
>
> (707) 321-2937  // cell
>
> *Powering What’s Next*™* | *The Enphase Energy Management System
> 
>
> NABCEP Certified Solar PV Installer #03262011-300
>
> California C10 Licensed Electrician #986315
>
> --
> *From:* RE-wrenches  on behalf
> of Jay via RE-wrenches 
> *Sent:* Tuesday, July 12, 2022 3:54 PM
> *To:* RE-wrenches 
> *Cc:* Jay 
> *Subject:* Re: [RE-wrenches] Enphase IQ7 versus IQ8
>
> *EXTERNAL EMAIL* - *Use caution when responding, clicking, and/or
> downloading attachments.*
>
>
>
>
> 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@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@lists.re-wrenches.org> wrote:
>
> Do you need the additional switch if you use the Enphase battery?
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Tuesday, July 12, 2022 11:38 AM
> *To:* RE-wrenches 
> *Cc:* Jason Szumlanski 
> *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-wrench

Re: [RE-wrenches] Enphase IQ7 versus IQ8

2022-07-12 Thread Nick Soleil via RE-wrenches

That is correct, Jay.  You only need the rapid shutdown switch if you have IQ 
8s and an IQ System Controller.

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.


Cordially,

Nick Soleil

Enphase Energy Senior Product Manager

(707) 763-4784 x7267  // office

(707) 321-2937  // cell

Powering What’s Next™ | The Enphase Energy Management 
System

NABCEP Certified Solar PV Installer #03262011-300

California C10 Licensed Electrician #986315


From: RE-wrenches  on behalf of Jay 
via RE-wrenches 
Sent: Tuesday, July 12, 2022 3:54 PM
To: RE-wrenches 
Cc: Jay 
Subject: Re: [RE-wrenches] Enphase IQ7 versus IQ8

EXTERNAL EMAIL - Use caution when responding, clicking, and/or downloading 
attachments.





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 
 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 
mailto:re-wrenches@lists.re-wrenches.org>> 
wrote:

Do you need the additional switch if you use the Enphase battery?



From: RE-wrenches 
mailto: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 
mailto:re-wrenches@lists.re-wrenches.org>>
Cc: Jason Szumlanski 
mailto: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

___
List sponsored by Redwood Alliance

Pay optional member

Re: [RE-wrenches] Enphase IQ7 versus IQ8

2022-07-12 Thread Jay via RE-wrenches

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 
>  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 
>>  wrote:
>> Do you need the additional switch if you use the Enphase battery?
>> 
>>  
>> 
>> From: RE-wrenches  On Behalf Of 
>> Jason Szumlanski via RE-wrenches
>> Sent: Tuesday, July 12, 2022 11:38 AM
>> To: RE-wrenches 
>> Cc: Jason Szumlanski 
>> 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
>> 
> ___
> 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
> 
___
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

Re: [RE-wrenches] Enphase IQ7 versus IQ8

2022-07-12 Thread Jason Szumlanski via RE-wrenches

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  *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Tuesday, July 12, 2022 11:38 AM
> *To:* RE-wrenches 
> *Cc:* Jason Szumlanski 
> *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
>
>
___
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

Re: [RE-wrenches] Enphase IQ7 versus IQ8

2022-07-12 Thread Mark Frye via RE-wrenches

Do you need the additional switch if you use the Enphase battery?

From: RE-wrenches  On Behalf Of 
Jason Szumlanski via RE-wrenches
Sent: Tuesday, July 12, 2022 11:38 AM
To: RE-wrenches 
Cc: Jason Szumlanski 
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

[RE-wrenches] Enphase IQ7 versus IQ8

2022-07-12 Thread Jason Szumlanski via RE-wrenches

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

Re: [RE-wrenches] Enphase IQ7 versus IQ8

Re: [RE-wrenches] Enphase IQ7 versus IQ8

Re: [RE-wrenches] Enphase IQ7 versus IQ8

Re: [RE-wrenches] Enphase IQ7 versus IQ8

Re: [RE-wrenches] Enphase IQ7 versus IQ8

[RE-wrenches] Enphase IQ7 versus IQ8

6 matches

Site Navigation

Mail list logo

Footer information