Jason, Wrenches, Consensus well that may not be the correct word to use, personally l have used Solark for retrofitting systems that already have GT type inverters, if you go with AC Coupling then the gen set connection is a little more complicated but very doable. Funtimes
On Sat, Aug 9, 2025, 11:26 AM Jason Szumlanski via RE-wrenches < [email protected]> wrote: > I go with "Backup Loads" on my drawings. > > Tesla will not charge from a generator. But you can obviously have a > generator power the loads via a transfer switch if the battery is > completely depleted. It's not the best solution, for sure. > > > Jason Szumlanski > Principal Solar Designer | Florida Solar Design Group > NABCEP Certified Solar Professional (PVIP) > Florida State Certified Solar Contractor CVC56956 > Florida Certified Electrical Contractor EC13013208 > > > On Sat, Aug 9, 2025 at 1:57 PM jay via RE-wrenches < > [email protected]> 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 >> >> >> 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 >> >> >> 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 >> >> 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 >> >> _______________________________________________ >> 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 >> >> _______________________________________________ >> 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 >> >> >> _______________________________________________ >> 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 > >
_______________________________________________ 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
