Re: [RE-wrenches] Long span commercial solar racking

Check out Brooklyn Solar . They have a system that sounds sort of like what you're describing. On Fri, Aug 27, 2021 at 6:34 AM Dave Tedeyan wrote: > Hi All, > > I am looking for recommendations for a solar racking system that can be > put on a flat commercial roo

Re: [RE-wrenches] Tesla Powerwalls

Same situation here. Supply completely dried up and we got the same, tired excuses. Lot's of unhappy customers who point the finger at us. We have finally started getting some shipments but nothing close to the promises we received over a year ago. On Tue, Jul 20, 2021 at 5:04 PM Blake Gleason wr

Re: [RE-wrenches] Is Solark UL 9540 Certified?

tp://members.sti.net/offgridsolar/> > e-mail offgridso...@sti.net > text 209 813 0060* > > On Tue, 20 Jul 2021 10:22:43 -0700, Lorenzo Ortiz > wrote: > > Wrenches, > > We have recently had an AHJ reject our Solark 12k system with Simpliphi > batteries stating: &g

[RE-wrenches] Is Solark UL 9540 Certified?

Wrenches, We have recently had an AHJ reject our Solark 12k system with Simpliphi batteries stating: *"Energy storage systems are required to be listed per UL 9540 per NEC 706.5 (See also Annex A in the NEC, under energy storage systems). The Sol-Ark system is not listed and tested per UL 9540 but

Re: [RE-wrenches] Programs for one line DWGs.

AutoCAD LT On Mon, May 18, 2020 at 3:29 PM Dana Orzel wrote: > Hey all you wise guys! > > > > I looked back in the archives & found a few recommendations on drawing > programs. I had Design CAD-3D for 15 years and it was simple [2D & 3D] & > worked fine. I had to upgrade recently as this program

Re: [RE-wrenches] NEC 2020 not available as a portable PDF?

https://catalog.nfpa.org/NFPA-70-National-Electrical-Code-NEC-Softbound-P1194.aspx?order_src=G010&gclid=EAIaIQobChMI-fSc1e305gIVgtdkCh3Z0gXeEAAYASAAEgJ0nvD_BwE On Wed, Jan 8, 2020 at 12:35 PM Christopher Warfel < cwar...@entech-engineering.com> wrote: > Wrenches, > > I was told that the NEC 2020

Re: [RE-wrenches] Residential tracker options

They're real. And pricey, ~$45k/unit. On Wed, Oct 16, 2019 at 9:18 AM wrote: > Dear people: Well, I’ve found these folks: > https://www.allearthrenewables.com/the-allearth-solar-tracker …but after > several inquiries and contacting a couple of their alleged dealers, I still > cannot get any pr

Re: [RE-wrenches] Module-Level Shutdown for off grid systems

a terrible idea. Any communication > box that can shut off charge to the batteries over winter at an unoccupied > site is asking for trouble. A communication glitch and the batteries will > be dead. This site is about 2 hours from the closest fire department so > there is nothing to be gai

[RE-wrenches] Module-Level Shutdown for off grid systems

Wrenches, Are any of you looking ahead at solutions for module level rapid shutdown for off grid? Here in CA it's being implemented next year (at least in my area) and I haven't found any reliable, proven, *cost-effective* products yet. I know Tigo has some sort of inline component but haven't hea

Re: [RE-wrenches] seeking PV mounting advice to Shipping Container for Off-grid

Check this company out. They have a pretty slick solution. On Mon, Sep 23, 2019 at 6:12 AM Chris Schaefer wrote: > G'Day All, > > I'm looking for anyone with advice that has mounted PV to a > shipping container roof with minimal to no roof penetrations. The container > wil

Re: [RE-wrenches] Large off-grid inverter/storage

Same. We've started calling our initial $100k+ proposals the 'kiss of Death' since we tend to never hear from them again. It's a good way to weed out those who aren't willing to spend the time/capital on a system that will actually perform what they're asking (reliably!). On Fri, Sep 6, 2019 at 12

Re: [RE-wrenches] heating lithium in cold weather

Try heated seed mats. They seem to work pretty well if you have an available power source nearby. https://www.amazon.com/MT10004-Waterproof-Certified-Hydroponic-Germination/dp/B0044U4F5I On Fri, May 17, 2019 at 8:26 AM jay wrote: > HI All, > > I”m wondering if anyone has suggestions about how t

[RE-wrenches] All-In-One Off-Grid Power System-Nimbus Power

Anyone have any experience with these guys? Seems like a cool product but not a lot of info out there. Nimbus Power Systems -- Loren Ortiz Technical PV Design Specialist - Commercial/Reside

Re: [RE-wrenches] Big AGM's and 24V Lithium batteries

Simpliphi has 24V Lithium On Thu, Mar 28, 2019 at 1:09 PM Chris Schaefer wrote: > G'Day All, > > Came across an older DIY 24v off-grid system. Looking to replace current > AGM SunXtender batteries with less then 4 years on them but severely

Re: [RE-wrenches] Anyone recognize this pole mount system?

Yeah, I'm pretty sure that one is an old Unirac TPM, but the one with the adjustable screw is a mystery. On Wed, Mar 20, 2019 at 7:12 AM Kienan Maxfield wrote: > These are not MT Solar. That is certain. > > Thanks, > Kienan > > > > > On Mar 14, 2019, at 2:12 PM, Timothy Econopouly < > tim.econop

Re: [RE-wrenches] Lg chem

They are available. We've been installing them for a while now. You need to get "certified" as far as I know. On Fri, Dec 14, 2018 at 7:45 AM Kirk Herander wrote: > > Does anyone know when LG chem batteries for Storedge inverters are going > to be available? I’ve heard nothing new for months tha

Re: [RE-wrenches] Need direct-to-decking mounting foot recommendation

The S-5 solar-foot attachment worked pretty well for us going into the decking on a metal roof. Sunmodo also makes a decking attachment option but I've never used it on a metal roof though. On Wed, Nov 21, 2018 at 7:59 PM William Miller wrote: > Friends: > > > > I have a roof-top PV project comi

Re: [RE-wrenches] Commercial backfeed

Yep, all the rules still apply, But with 480 you get far more leeway as far as breaker size with the square-root factored in. On Mon, Nov 5, 2018 at 7:07 AM, frenergy wrote: > Hey folks, > > I've been asked to inter-tie a system to a 600 amp 480V delta > panel. Do all the same rules

Re: [RE-wrenches] Raised up ground mounts

We've used DPW also with good results. We design for 110 mph winds out here and, depending on how high you go, can require some pretty beefy SCH80 8"-10"D pipe. MT Solar might be something to look at too. They make multi-pole mounts for larger arrays but can get a little pricey. Good luck! On T

Re: [RE-wrenches] Step-up/Step-down Transformer question

; instead of the array, one reason is even if there is some line loss at full >> power its less as the voltage goes up and the inverter does not see the >> line resistance that can cause high voltage issues at the inverter. Some >> engineers use more side of peak performance than ful

[RE-wrenches] Step-up/Step-down Transformer question

Wrenches, We have a PV array situated about 900' from the POI (240V 1PH). We initially spec'd (5) 11.4kW inverters and the combined output would be 238A. The wire size required for this current over that distance is cost prohibitive. A solution was to use a single 50kW 3 phase inverter at the ar

Re: [RE-wrenches] Bi-Directional / Netmetering question

> Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etique

[RE-wrenches] Pro Harvest Inverters (Formerly HI-Q)

are relatively new. -- *Lorenzo Ortiz Commercial PV Designer* lore...@cal-solar.com* (530) 274-3671* -- <http://californiasolarco.com/referral-program/> ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.o

Re: [RE-wrenches] B3 Bypass breaker

s.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > &

[RE-wrenches] S-Flex components needed

me if anyone has/knows of a surplus of these pieces. Thanks. -- *Lorenzo Ortiz Commercial Design/Support* lore...@cal-solar.com* (530) 274-3671* -- <http://californiasolarco.com/referral-program/> ___ List sponsored by Redwood All

Re: [RE-wrenches] Flashing for flat roofs

listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Che

Re: [RE-wrenches] concrete roof tile install

> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios