Thank you all for your comments. I am going to bat with the Sonoma County building department, and will report back. Mike
On Tue, Jul 29, 2025 at 3:27 PM Bradley Bassett via RE-wrenches < [email protected]> wrote: > What I used to specify for exterior disconnect for a battery bank was the > MidNite MNLBC-W250. I believe you can connect larger battery cables to > input and output bypassing the smaller busbar input. > > https://www.midnitesolar.com/productPhoto.php?product_ID=687&productCat_ID=9&sortOrder=1&act=p > If rapid shutdown is also required you can substitute the breaker with a > remote trip version for the main 250A breaker. It needs a 24VDC signal to > trip and is manually reset so it's not ideal, but costs far less than a > true DC rated disconnect. > > However, it seems to me, agreeing with others here, that it should not be > required in this case, that the breaker in the inverter should suffice. > > Brad Bassett > > On Tue, Jul 29, 2025 at 2:47 PM Blair May via RE-wrenches < > [email protected]> wrote: > >> Sue what happened to the Birdhouse. My e panel has shunt tripped 250A >> battery breakers that is acquitted outside the building. >> Tump >> >> Blair "Tump" May >> >> On Tue, Jul 29, 2025, 1:09 PM Sue Stankevitz via RE-wrenches < >> [email protected]> wrote: >> >>> Midnite does not offer an outdoor rated enclosure for our large breakers >>> but if only 100a was needed as Mike was asking about our MNPV3 with an >>> MNEPV100(100a DC breaker) would be outdoor rated and lockable. >>> >>> >>> >>> Sue Stankevitz >>> MidNite Solar, Inc. <https://www.midnitesolar.com/index.php> >>> (360) 403-7207 (XT122) >>> >>> >>> >>> *From:* RE-wrenches <[email protected]> *On >>> Behalf Of *MD Electric & Solar via RE-wrenches >>> *Sent:* Tuesday, July 29, 2025 12:46 PM >>> *To:* jay <[email protected]> >>> *Cc:* MD Electric & Solar <[email protected]>; RE-wrenches < >>> [email protected]> >>> *Subject:* Re: [RE-wrenches] Battery RSD >>> >>> >>> >>> Wondering if Midnight solar makes something outdoor rated, with a >>> typical 250ADC breaker, like this: >>> >>> Outdoor rated, lockable.... >>> >>> >>> https://www.midnitesolar.com/productPhoto.php?product_ID=76&productCat_ID=8&sortOrder=5&act=p >>> >>> >>> >>> On Tue, Jul 29, 2025 at 9:39 AM jay <[email protected]> wrote: >>> >>> Maybe if you left the key on a chain to open the door, and placard with >>> instructions on the outside that would work? >>> >>> >>> >>> >>> >>> On Jul 29, 2025, at 10:23 AM, MD Electric & Solar < >>> [email protected]> wrote: >>> >>> >>> >>> Correct, it does not have an external disconnect, but if you open the >>> cover, each battery has it's own disconnect and the Sol-Ark has a battery >>> disconnect. >>> >>> Looks like I'm in the market for a 100 amp rated outdoor, lockable DC >>> rated knife switch. >>> >>> Mike >>> >>> >>> >>> On Tue, Jul 29, 2025 at 9:16 AM jay <[email protected]> wrote: >>> >>> I had to look up that battery enclosure and if I understand correctly it >>> does not have an external breaker/disconnect so yes the inspector is >>> correct in the need for one if I understand. >>> >>> >>> >>> jay >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> On Jul 29, 2025, at 10:09 AM, MD Electric & Solar < >>> [email protected]> wrote: >>> >>> >>> >>> Here is the reference, attached. >>> >>> >>> >>> On Tue, Jul 29, 2025 at 8:49 AM jay <[email protected]> wrote: >>> >>> I’ll let the code experts chime in, but I would ask for the code >>> reference they are referring to. >>> >>> The only one I can think of has to do with if the batteries are on the >>> other side of a wall. >>> >>> Thats as clean an install as they come >>> >>> jay >>> >>> >>> >>> > On Jul 29, 2025, at 9:43 AM, MDElectricSolar < >>> [email protected]> wrote: >>> > >>> > <image0.jpeg> >>> > Michael D Nelson >>> > MD Electric & Solar, Inc. >>> > 707-684-0064 mobile >>> > 707-884-1862 office >>> > www.mdelectricsolar.com >>> > www.facebook.com/mdelectricandsolar >>> > >>> > >>> >> On Jul 29, 2025, at 8:06 AM, Jay via RE-wrenches < >>> [email protected]> wrote: >>> >> >>> >> What is the layout of the equipment >>> >> >>> >> Are the batteries next to and therefore in sight of the inverter? >>> >> >>> >> Jay >>> >> >>> >>> On Jul 29, 2025, at 8:44 AM, MDElectricSolar via RE-wrenches < >>> [email protected]> wrote: >>> >>> >>> >>> Wrenches, >>> >>> I have a building inspector in my county of Sonoma who has just told >>> me that we need to install a rapid shutdown switch of some type between my >>> LFZ battery bank and my Solark 15k inverter. He mentioned some type of >>> knife switch within 5 feet of the equipment. I cannot find any reference to >>> this requirement anywhere but he insists it is required. These batteries >>> happen to be simplify or brakes and Stratton batteries and each battery has >>> its own 80 amp breaker on the battery and the Solark has a battery >>> disconnect switch built-in. We do have module level RSD which kills the >>> solar output as well as the inverter output when the button is pushed. Does >>> anyone have any experience with this or can they point me to the correct >>> code section or what are others doing to comply with this requirement? >>> >>> >>> >>> >>> >>> Michael D Nelson >>> >>> MD Electric & Solar, Inc. >>> >>> 707-684-0064 mobile >>> >>> 707-884-1862 office >>> >>> www.mdelectricsolar.com >>> >>> www.facebook.com/mdelectricandsolar >>> >>> >>> >>> _______________________________________________ >>> >>> 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 >>> >> >>> >>> >>> >>> >>> -- >>> >>> Michael D Nelson >>> >>> MD Electric & Solar Inc. >>> >>> Office: 707-412-3181 >>> >>> Cell: 707-684-0064 >>> >>> www.mdelectricsolar.com >>> >>> www.facebook.com/mdelectricandsolar >>> >>> >>> >>> >>> >>> <PRMD BLD_20250728_062230.pdf> >>> >>> >>> >>> >>> >>> >>> -- >>> >>> Michael D Nelson >>> >>> MD Electric & Solar Inc. >>> >>> Office: 707-412-3181 >>> >>> Cell: 707-684-0064 >>> >>> www.mdelectricsolar.com >>> >>> www.facebook.com/mdelectricandsolar >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> -- >>> >>> Michael D Nelson >>> >>> MD Electric & Solar Inc. >>> >>> Office: 707-412-3181 >>> >>> Cell: 707-684-0064 >>> >>> www.mdelectricsolar.com >>> >>> www.facebook.com/mdelectricandsolar >>> >>> >>> >>> >>> _______________________________________________ >>> 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 >> >> _______________________________________________ > 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 > > -- Michael D Nelson MD Electric & Solar Inc. Office: 707-412-3181 Cell: 707-684-0064 www.mdelectricsolar.com www.facebook.com/mdelectricandsolar
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