Re: [RE-wrenches] Odd inspection procedure

I think the real point is:  even with on site inspections they often don't know what they are looking at, and do not have time or manpower to keep up with the latest in solar industry practices. I've seen just horrible stuff that passed inspection, including a battery cabinet completely

Re: [RE-wrenches] Odd inspection procedure

Imagine this... Hurricane central here and almost no jurisdictions get on the roof. Most do structural inspections by affidavit where the contractor signs their life away and accepts all liability. The structural inspection is a guy coming out and taking a picture of the affidavit (real efficient

Re: [RE-wrenches] Odd inspection procedure

Benn: I have no questions about our work. I have questions about the competition’s work. I want to complete on equal footing: code compliant, quality installations. If houses start burning down due to poor solar installs the industry suffers, as does the effort to mitigate climate change.

Re: [RE-wrenches] Odd inspection procedure

William, our city inspectors have moved a bit into this direction for some inspections... asking for specific photos fairly similar to the list you were given. While I feel that the inspection process on typical residential (and commercial of all sizes, for that matter) often, but not always,

Re: [RE-wrenches] Odd inspection procedure

Come to VT... No inspection needed for residential solar installations at all (in the majority of the state). Having done hundreds of inspections for NYS, I can tell you that quality and code compliance race for the bottom dollar the majority of the time.Having been called upon to troubleshoot

Re: [RE-wrenches] Odd inspection procedure

William; I attended a Zoom webinar last spring during the worst of Covid, there were various AHJs from around the US explaining how they were implementing remote video inspections for solar permits, and photographs, checklists and all that. I think Jeff Spies facilitated it, can't remember the

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

I didn’t say it did. 3 options. The OEM are selling a product that isnt code complaint, doubtful. Or it is included in the UL listing or there isn’t a UL standard for this to test to. I don’t have time but a call to the companies that list this feature would clear it up. Jay Peltz power.

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

Sol Ark told me they would provide a letter to any utility or jurisdiction if that would help alleviate there sell back fears. Sent from my iPhone > On Mar 31, 2021, at 5:51 AM, Jay wrote: > >  > A number of companies have this feature which is under their UL listing. > SE > SolArk > To

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

I think this highlights my point. Zero export is not "really" zero export in this case and the use of a third-party energy meter to provide net consumption data would surely not qualify the inverter as a listed device for this purpose. While I'm sure most utilities will accept an inverter designed

[RE-wrenches] Odd inspection procedure

Friends: We just finished a grid-tied project that included a pretty complicated service upgrade. The project is in Monterey County, California. The site is pretty remote on the south end of

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

Does UL1741 cover zero sell? I wasn't aware of that. I thought it just covered anti-islanding. If zero sell is covered, I don't see why a utility would not accept that. On Wed, Mar 31, 2021, 11:51 AM Jay wrote: > A number of companies have this feature which is under their UL listing. > SE >

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

Hello Greg, As Will mentioned, this mode of operation is doable with SolarEdge, but it will require some additional hardware—specifically, you will need an energy meter as well as CTs for each power phase. Here is some documentation to get you started: - Export Limitation brochure

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

Oh, for certain. Enphase has specific grid profiles (software) to accommodate utilities with zero export rules. It's my understanding that this is widely accepted. Other manufacturers support zero export, too. Even battery manufacturers are in on this, like Tesla Powerwalls can have zero export

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

A number of companies have this feature which is under their UL listing. SE SolArk To name 2. Are you saying that the UL listing isn’t enough and that it needs 3rd party testing. If so what organization/testing would that be? Jay Peltz power > On Mar 31, 2021, at 8:27 AM, Jason Szumlanski

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

On the other hand, utilities /have/ accepted inverters to shut-off power production into the grid if the grid fails via, I assume, software and/or electro-mechanical means. Bill Feather River Solar Electric Bill Battagin, Owner 4291 Nelson St. Taylorsville, CA 95983 530.284.7849 CA Lic 874049

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

I wonder how quick these software based approaches are to respond to loads that drop off and momentary selling that may occur before production is curtailed. I think what Greg may be asking is whether there is a failsafe method to prevent backfeed. Without a battery, I'm not sure how that would be

Re: [RE-wrenches] how to prevent selling to grid with grid tie inverter

Many inverters have the option to zero-sell (no export to the grid) but you need an additional CT on the main service conductors so the inverter can monitor the loads and ramp down production if it starts to get close to producing more than the loads require. I'd suggest getting into the manuals