Yes we are so far behind. I’m in Indiana and did my solar to 2020 nec, I should be good for a long time before Indiana adopts 2023.Indiana is still on NEC 2008, still a few places on NEC 2014 as well. (Not necessarily relevant to this thread)
Yes we are so far behind. I’m in Indiana and did my solar to 2020 nec, I should be good for a long time before Indiana adopts 2023.Indiana is still on NEC 2008, still a few places on NEC 2014 as well. (Not necessarily relevant to this thread)
Good call on that!I see your picture considers setback from eaves, and walkways. Those rules have evolved, so make sure based on current rules.
Some places, the eaves count as walkway, others walkway must be inside walls. xd
Really?!
The ridge setback we have is so fireman can hack a vent hole on one or the other side to let smoke out, without wind pushing it in.
Used to be walkways on all faces, now just one on street side.
For commercial, there was exception (maybe for shed roof?) if fire department said they had a different way to vent.
Great if you can use all good area, just avoid shaded areas.
Haha.You still need to be sane about setback and walkway for serviceability
I would make sure you have that in writing before spending time and money on a system that might not actuality be acceptable. A quick search shows a number of MD counties have their code amendments online for reference.Good call on that!
So I just got off the phone with my AHJ. Turns out they have an amendment eliminating ALL setback requirements. Definitely just made my layout planning a lot easier.
If these are vents that stick up ideally you would reconfigure them to not stick up above the panelsBut being able to install panels less than 18" away from vents etc
Haha.
I'll be installing them so I don't want to be hanging off the roof installing the last few panels.
But being able to install panels less than 18" away from vents etc as well as not needing to be 3' away from the ridge definitely give me the flexibility I was hoping for. It makes a 2-3 panel difference and allows me to put them where I have less shade.
I did a proportional drawing to visualize some layout options. The red bars in this are 20" wide.
For microinverters there’s probably a decent chance of a problem or compatibility issue when transitioning to off grid.Except for MLPE, you'll generally never have to do anything with the panels. Unless they have quality issues and degrade; buy brands with good track record.
I guess for RSD you could also use extension cables like Zany suggests, clip RSD boxes to edge panels.
Yea good call. I asked her for the code section which she gave me. I'll look it up to make sure it's right. I am assuming if they approve the building plans that would be my greenlight but knowing the actual code is invaluable.I would make sure you have that in writing before spending time and money on a system that might not actuality be acceptable. A quick search shows a number of MD counties have their code amendments online for reference.
Approval & stamped documents from all AHJ involved (sometimes fire, and frequently POCO need to review too) is good enough for me.Yea good call. I asked her for the code section which she gave me. I'll look it up to make sure it's right. I am assuming if they approve the building plans that would be my greenlight but knowing the actual code is invaluable.
That requires POCO approval. In places that don’t let you pull meter (at least half of my state) you also need to coordinate a power cutoff/restore with your work and inspection.To get around the 120% rule can't you just connect it on the line supply side where the wires come from the meter to the main breaker. I think it's called line side tap.
https://www.greentechrenewables.com/article/supply-side-tapT
I understand that just assuming they were pulling a permit since wanted to back-feed. Just have them pull the meter hook up the taps run it to a disconnect then have them put the meter back in.That requires POCO approval. In places that don’t let you pull meter (at least half of my state) you also need to coordinate a power cutoff/restore with your work and inspection.