[RE-wrenches] Battery RSD

[Jason Szumlanski]

True, but a suitable DC rated disconnect switch with large enough terminals
is going to be very expensive.

The whole thing boils down to the definition of an ESS. Getting the
inspector to realize that the 706.2 disconnect is not required to be a*
battery* disconnect is key here.


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 Tue, Jul 29, 2025 at 11:38 PM William Miller via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Jason:
>
>
>
> Fine stranded cables can be used with set screw terminals if you use
> ferrules.
>
>
>
> You hint at a broader point:  The industry is not providing solutions that
> the regulators are demanding.  Any battery with BMS should have a remote
> inhibit.  Problem solved.
>
>
>
> William
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Tuesday, July 29, 2025 2:45 PM
> *To:* RE-wrenches
> *Cc:* Jason Szumlanski
> *Subject:* Re: [RE-wrenches] Battery RSD
>
>
>
> The problem I see with just complying is that there is really no practical
> or cost-effective way to comply. You would have to somehow transition from
> battery cable to some other cable type, because typical fusible disconnect
> switch lugs are not going to be rated to accept
> fine-stranded battery cable, especially in the required size.
>
>
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