🤦🏻‍♂️ ugh these building departments..! I’m very surprised that they’re requiring the battery conductors to open. I don’t think they understand the gravity of what they’re saying
On Tue, Jul 29, 2025 at 10:49 AM MD Electric & Solar < [email protected]> wrote: > 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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