I use the Sunny Island designation of "Protected Loads."
---
On 2025-08-09 13:54, jay via RE-wrenches wrote:
Yeah I've given up trying to correct people on that one.
On Aug 9, 2025, at 11:26 AM, Foxfire Energy via RE-wrenches
<[email protected]> wrote:
Umm, just an FYI, I actually got dinged for labeling the AC output
panel from a battery backup inverter as "Critical Loads".. Critical
loads (Critical Branch circuits) are defined in article 100 of the NEC
as circuits associated with Patient Care.. AC loads from battery backup
inverters are more appropriately defined as "Dedicated Loads"..
Maybe someone could correct me here, but I'm under the impression most
garden-variety inverters are not rated for Critical Load applications.
db
-------------------------
From: RE-wrenches <[email protected]> on behalf
of William Miller via RE-wrenches <[email protected]>
Sent: Saturday, August 9, 2025 1:03 PM
To: RE-wrenches <[email protected]>
Cc: William Miller <[email protected]>
Subject: Re: [RE-wrenches] Adding battery to grid tie
Correct me if I'm wrong: I believe AIOs can accept AC coupled power
through the load 'output' port. That leaves the Grid and Gen inputs
free for their roles as labelled.
The AC coupled inverters connect via a breaker in the critical loads
panel.
William Miller
Miller Solar.com
805-438-5600
www.millersolar.com [1]
On Sat, Aug 9, 2025 at 9:50 AM david quattro via RE-wrenches
<[email protected]> wrote:
True. if you want to do grid, gen, and AC Couple then you need a
transfer switch or contactor.
Likewise I haven't touched a Powerwall, nor an Enphase battery.
On Sat, Aug 9, 2025 at 9:36 AM jay via RE-wrenches
<[email protected]> wrote:
One big issue with the AIO's is that you can't do grid, generator and
ac coupling to the best of my understanding
I do like the idea of just removing the old GT inverter and stuffing
that into the AIO, elegant
yes its my understanding that Tesla won't accept generator. While many
are pissed off at eg4, I won't touch tesla.
and FYI you can buy the same inverter at Fortress.
thanks everyone.
jay
On Aug 9, 2025, at 10:28 AM, Tyrone Houck via RE-wrenches
<[email protected]> wrote:
Midnite AIO and Sol-Ark both work great for AC coupling in my
experience. If anyone is new to "All In One" inverters I recommend
having tech support walk you through commissioning, check firmware,
etc. the first time.
On Sat, Aug 9, 2025, 8:47 AM William Miller via RE-wrenches
<[email protected]> wrote: Two options:
1. AC couple existing inverter to a battery capable inverter.
2. Replace existing inverter.
I favor option 2.
Option 1 is only preferred if gaining access to the existing inverter
for replacement is difficult. An example would be a micro-inverter
system.
New AIO inverters allow true high voltage PV input so the existing
stringing will probably not need to be modified.
I'm new to this so type of upgrade so I welcome any corrections to
these opinions. I did replace a Sunny Boy in my shop with a Soul Ark
and it's working great!
William Miller
Miller Solar.com
805-438-5600
www.millersolar.com [1]
On Sat, Aug 9, 2025 at 8:26 AM Jay via RE-wrenches
<[email protected]> wrote: Is there a consensus as to
what equipment to use for adding battery backup to normal GT inverter?
I've had a few people ask and I actually haven't done it.
Thx
Jay
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org [2]
List Address: [email protected]
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/[email protected]/
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 [3]
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org [2]
List Address: [email protected]
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/[email protected]/
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 [3]
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org [2]
List Address: [email protected]
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/[email protected]/
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 [3]
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org [2]
List Address: [email protected]
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/[email protected]/
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 [3]
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org [2]
List Address: [email protected]
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/[email protected]/
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 [3]
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: [email protected]
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/[email protected]/
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: [email protected]
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/[email protected]/
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
Links:
------
[1] http://www.millersolar.com/
[2] http://re-wrenches.org/
[3] http://www.members.re-wrenches.org/
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: [email protected]
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/[email protected]/
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
