The way I have handled it over the years is to consistently and repeatedly use the term "branch circuit" to describe the combined inverter output circuits. Inspectors tend to understand the basic terminology to describe an AC circuit protected by a standard circuit breaker. Once it clicks that this is just a backfed AC circuit, and the same rules apply as an AC load circuit, the lightbulb goes off, and they back off all of the DC-related stuff in 690.
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, Mar 7, 2026 at 8:32 PM Mick Abraham via RE-wrenches < [email protected]> wrote: > Scot Arey clearly described his inspector problem & various Wrenches have > made helpful contributions (as usual for The List). > > Scot, could the inspector be introduced to the concept of "negative AC > loads"? As we know, that describes the AC side of any grid tie inverter. > Since "normal loads" are clearly legal for Romex type NM cable in an attic > space, negative loads should also be legal. > Identical rules of physics apply to both cases. > > The Wrench List is the Bomb! > > Mick Abraham, Proprietor > www.abrahamsolar.com > > Cell phone or for text messaging: 970-946-6584 > _______________________________________________ > 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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