David, We already have an RSD system installed, it shuts down the tigo's on the rooftop and it shuts down the AC output of the inverter, making the home safe for firefighters. I can't imagine what an additional battery shut down could do for safety, at 48V DC nominal? But we must comply with the AHJ........
I priced (online) an Eaton 100amp 600V DC rated knife switch NEMA 3R, $4000.00....ouch Mike On Tue, Jul 29, 2025 at 10:41 AM david quattro <[email protected]> wrote: > I use the SolArk 12v micro-circuit that triggers RSD. hopefully that’s > all they’re looking for, is to kill ESS and solar DC. When using > plunger-type, or single gang it’s easy. But when they require a knife > blade style switch it’s tricky (with SolArk and Midnite). This is because > in order to deenergize ESS/RSD you have to *complete* the micro circuit. > Eaton makes a Nema4 switch that can be turned upside down. that puts > the red handle on the left side, which is unusual but I’ve done it, and I > don’t think it violates any requirement. > otherwise you’re stuck using an ice cube relay. Initiating RSD is > easy, but getting everything to turn back on is harder. Feel free to call > me if you want > > > > > On Tue, Jul 29, 2025 at 9:46 AM MD Electric & Solar via RE-wrenches < > [email protected]> wrote: > >> 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 >> >> -- 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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