I suppose one could add an E-gauge system with CTs in appropriate locations.
William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Thu, Aug 14, 2025 at 9:16 AM Jason Szumlanski via RE-wrenches < [email protected]> wrote: > I like data. Not being able to measure AC coupled PV input is far from my > ideal in my opinion, but when there is no other practical choice, I guess I > would do it. In fact, I have done ita couple of times. > > > 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 Thu, Aug 14, 2025, 10:48 AM Zeke Yewdall via RE-wrenches < > [email protected]> wrote: > >> While the AC coupled PV system can be added to the AC backed up loads >> panel, this defeats a lot of the functionality of a dedicated AC coupled PV >> array input on the AIOs and is not recommended by most of them. In >> theory, yes, it works on most inverters to just add it as a negative AC >> load -- and I've even AC coupled an old Trace SW, and it works fine on >> that, despite being designed and built before AC coupling was thought of. >> >> But, if it's just on the AC loads output, the inverter does not have the >> ability to drop the AC PV array separately from the load if it needs to for >> high battery charge regulating, does not have the ability to measure the PV >> array input on monitoring, and may have other issues. >> >> Zeke >> >> > *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 >> > >> >> _______________________________________________ >> 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 > >
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