If there is some kind of case flange in a convenient spot one might use one of these:
On a related note: I installed 3 Deka Duration batteries wall-mounted in my shop. The manufacturer provided no means to enclose conductors in a raceway. I cobbled together some sections of 6x6 gutter with an opening cut into each to enclose conductors. It worked out ok but was time consuming. I like the Duration but I don’t like the lack of raceway options. William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Thu, Oct 2, 2025 at 1:58 PM Jason Szumlanski via RE-wrenches < [email protected]> wrote: > For batteries like the Midnite PowerFlo16 or EG4 Wallmount using a NEC > Chapter 3 wiring method, what do you do in regards to running an EGC with > the DC circuit conductors in a raceway? Midnite, for example, supplies a > #10 EGC to bond the case of the battery, but this is not suitable for a > circuit with an ampacity of 210A per NEC Table 250.122. It's not addressed > in manuals from these manufacturers. > > It would be easy enough to run a #4 copper EGC with the 2/0 battery > cables, but where would you terminate it at the battery end? The case > ground screws are far too small. I suppose you could use a grounding > bushing if the raceway is not itself qualified as the EGC. In cases where > you have a conduit box like EG4 or if you set a Midnite AIO on a wiring > trough, they supply plastic bushings to use, so there is no solid > electrical continuity between the inverter and wiring trough, yet you > seemingly need to run up to a #4 EGC through the opening with the battery > cables. Where would that terminate in the trough or on the battery? > > I haven't had any issues with AHJs by just running a #10 with the circuit > conductors and making sure all metallic parts are bonded, but something > doesn't seem right about all of this, and I want to be prepared if called > out by an inspector. > > Jason Szumlanski > Florida Solar Design Group > > _______________________________________________ > 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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