[RE-wrenches] Subject: Re: Is this city inspector just full of it? His comments and my response. City is on NEC 2023

[Jason Szumlanski]

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 <
re-wrenches at lists.re-wrenches.org> 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.
>
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