Yep they make them http://w3.usa.siemens.com/powerdistribution/us/en/product-portfolio/meter-load-center/Documents/SIE_BR_SOLAR.pdf
Jay > On Apr 30, 2014, at 6:56 AM, Jason Szumlanski <ja...@fafcosolar.com> wrote: > > Yeah, #10 wire is pretty cheap, especially when purchased in bulk, as are > readily available 100A Square D NEMA 3R load centers and breakers. There > isn't a great cost savings in terms of material. Sometimes it's just easier > to make a single home run. Every job is different. We do it both ways. > > Sometimes there isn't enough space near the meter or existing distribution > for both a combiner and fusible disconnect or there are obstructions that > make it impractical. There are aesthetic concerns (usually overblown by the > homeowner or HOA). > > What we really need is for Square D to start making main distribution > equipment with dedicated supply side lugs with OCPD built in. One can > dream... > > > Jason > > > >> On Wed, Apr 30, 2014 at 9:44 AM, jay peltz <j...@asis.com> wrote: >> Hi Jason, >> >> Always good to get a different view on how to do it. >> I've always found it easier and cheaper to pull the circuits off the roof to >> the AC combiner, so my overcurrent is in a different location >> >> Jay >> Peltz power >> >> >> >> >> >> >>> On Apr 30, 2014, at 5:08 AM, Jason Szumlanski <ja...@fafcosolar.com> wrote: >>> >>> Each microinverter string needs dedicated overcurrent protection. If >>> combining strings on the roof for a single run back to the interconnection >>> point, you need each string to have it's own breaker/fuse. The other option >>> is to run each string back to the interconnection point separately, but for >>> a 10kW system you have to do a supply side connection anyway on as typical >>> 200A service, so combining strings somewhere is necessary, and a single run >>> from the roof makes sense in many cases. >>> >>> >>> Jason Szumlanski >>> Fafco Solar >>> >>> >>> >>> >>>> On Tue, Apr 29, 2014 at 6:40 PM, jay peltz <j...@asis.com> wrote: >>>> Follow up to Bill's point. >>>> >>>> For Micros I've installed a disconnect on the roof, but never a breaker or >>>> fuse >>>> Why install a breaker? >>>> >>>> jay >>>> >>>> peltz power >>>> >>>>> On Apr 29, 2014, at 9:43 AM, Bill Hoffer wrote: >>>>> >>>>> Dave >>>>> >>>>> I agree, in the case of microinverters, you already have a main PV System >>>>> disconnect at the Load Panel to shut down the system that is readily >>>>> accesible. I would consider the disconnect on the roof as a supplemental >>>>> disconnect for the purposes of maintenance by authorized personal that >>>>> only needs to be accessible. >>>>> >>>>> Bill >>>>> >>>>> >>>>>> On Tue, Apr 29, 2014 at 8:44 AM, Dave Click <davecl...@fsec.ucf.edu> >>>>>> wrote: >>>>>> I think 240.24(A)(4) allows the installation of the inverter OCPDs in >>>>>> the SolaDeck hidden under a module. >>>>>> >>>>>> 240.24 Location in or on Premises. >>>>>> (A) Accessibility. Overcurrent devices shall be readily accessible and >>>>>> shall be installed so that the center of the grip of the operating >>>>>> handle of the switch or circuit breaker, when in its highest position, >>>>>> is not more than 2.0 m (6 ft 7 in.) above the floor or working platform, >>>>>> unless one of the following applies: >>>>>> ... >>>>>> (4) For overcurrent devices adjacent to utilization equipment that they >>>>>> supply, access shall be permitted to be by portable means. >>>>>> >>>>>> >>>>>> And if panelboards / fused safety switches are allowed to have >>>>>> screwed-down covers over the OCPDs, I'd think that installing a >>>>>> removable module over these OCPDs would meet NEC. I guess an AHJ could >>>>>> argue that this requires TWO covers be removed, unlike a panelboard or a >>>>>> switch. >>>>>> >>>>>> DKC >>>>>> >>>>>> >>>>>>> On 2014/4/29, 11:15, Jason Szumlanski wrote: >>>>>>> 690.9(D) is not applicable to the original discussion because we were >>>>>>> talking about an Inverter output circuit, not a PV Source or Output >>>>>>> circuit. >>>>>>> >>>>>>> 690.34 may apply if you call a SolaDeck with breakers a junction box, >>>>>>> but I can see that being a stretch in the mind of many. >>>>>>> >>>>>>> My and Ray's question about the screws on the SolaDeck cover itself >>>>>>> requiring a tool to render it accessible is still an issue if the >>>>>>> breakers themselves need to be "readily accessible," but that would >>>>>>> also apply to a Midnite MNPV, which also has a cover with a screw. >>>>>>> >>>>>>> >>>>>>> Jason Szumlanski >>>>>>> >>>>>>>> >>>>>>>>> On 4/28/2014 5:57 PM, Bill Brooks wrote: >>>>>>>>> Read 690.9(D) and 690.34. Not sure where this “hysteria—run for the >>>>>>>>> border” sentiment is coming from. >>>>>>>>> >>>>>>>>> >>>>>>>>> 690.9(D) Photovoltaic Source and Output Circuits. Listed PV >>>>>>>>> >>>>>>>>> overcurrent devices shall be required to provide overcurrent >>>>>>>>> >>>>>>>>> protection in PV source and output circuits. The overcurrent >>>>>>>>> >>>>>>>>> devices shall be accessible but shall not be required to >>>>>>>>> >>>>>>>>> be readily accessible. >>>>>>>>> >>>>>>>>> >>>>>>>>> 690.34 Access to Boxes. Junction, pull, and outlet boxes >>>>>>>>> >>>>>>>>> located behind modules or panels shall be so installed that >>>>>>>>> >>>>>>>>> the wiring contained in them can be rendered accessible >>>>>>>>> >>>>>>>>> directly or by displacement of a module(s) or panel(s) secured >>>>>>>>> >>>>>>>>> by removable fasteners and connected by a flexible >>>>>>>>> >>>>>>>>> wiring system. >>>>>>>>> >>>>>>>>> >>>>>>>>> This is not a change. Please help me understand the concern. >>>>>>>>> >>>>>>>>> >>>>>>>>> Bill Brooks. >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> From: re-wrenches-boun...@lists.re-wrenches.org >>>>>>>>> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Ray >>>>>>>>> Walters >>>>>>>>> Sent: Monday, April 28, 2014 2:23 PM >>>>>>>>> To: RE-wrenches >>>>>>>>> Subject: Re: [RE-wrenches] (no subject) >>>>>>>>> >>>>>>>>> >>>>>>>>> Interesting so does "require a tool" include taking a screw off the >>>>>>>>> cover plate of the combiner box, too? >>>>>>>>> What a game changer. I'm going to Mexico for my next project; I'll >>>>>>>>> actually enjoy even more being the sole AHJ on the project. >>>>>>>>> >>>>>>>>> R.Ray Walters >>>>>>>>> CTO, Solarray, Inc >>>>>>>>> Nabcep Certified PV Installer, >>>>>>>>> Licensed Master Electrician >>>>>>>>> Solar Design Engineer >>>>>>>>> 303 505-8760 >>>>>>>>> On 4/28/2014 2:52 PM, Michael Morningstar wrote: >>>>>>>>> >>>>>>>>> Readily accessible is now defined in the 2014 NEC. Installing OCPD’s >>>>>>>>> underneath a module is a major faux paux, and I can’t imagine any AHJ >>>>>>>>> thinking otherwise. Having to remove a module in order to reset a >>>>>>>>> breaker, what a drag. >>>>>>>>> >>>>>>>>> >>>>>>>>> "Capable of being reached quickly for operation, renewal or >>>>>>>>> inspection without requiring those concerned to use a tool, to climb >>>>>>>>> over, remove obstacle or other.” >>>>>>>>> >>>>>>>>> >>>>>>>>> Michael >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> On Apr 28, 2014, at 10:29 AM, William Miller >>>>>>>>> <will...@millersolar.com> wrote: >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> You call it a solar panel, I call it a glass j-box cover plate. >>>>>>>>> >>>>>>>>> William >>>>>>>>> >>>>>>>>> Miller Solar >>>>>>>>> >>>>>>>>> >>>>>>>>> On Apr 28, 2014, at 9:21 AM, Jason Szumlanski <ja...@fafcosolar.com> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>> If that is the interpretation, >>>>>>>>> I don't see how the breakers are "readily accessible" in a SolaDeck >>>>>>>>> mounted anywhere, regardless of whether it is under a module. It >>>>>>>>> requires removal of four screws (using a tool) to access the breakers >>>>>>>>> inside the enclosure. It's all up to the AHJ. It has not been an issue >>>>>>>>> locally here. I can see how other jurisdictions may not >>>>>>>>> concur. >>>>>>>>> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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