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Oh boy, sounds like things are getting worse, not better. Thanks for the help everyone. Crap, that means I have to remove panels. Appreciate the direct links! Will move this to the conduit (or from the sounds of it, pull new AWG 8 wire). I'm aware, and this is something I'm definitely trying...

That's the same math I did, plus the fact that it's on a roof. So it looks like I can keep AWG 10.

Let me make sure I understand this rule correctly. NEC 2020 states that AWG 10 rated for 90°C gives me 40A to work with. There are 4 cables in the conduit, so according to 310.15(C)(1) I have to reduce the rated amps by 0.8, or 32A. So far so good. But now we get into ambient temperatures since...

Long story short, I signed with an installer back in Nov 2020 and after months and months of delays and broken promises, I finally had my solar panels installed at the start of this year. Only for Inspectional Services at the City of Boston to revoke the permit because it wasn't filed properly...

I guess the one saving grace is that I've only paid 50% of the job so far. Hopefully I can salvage it for less than the remaining 50%. Thanks for the advice all. I wish finding a good contractor who isn't booking 6 months out was easier. If I wait too much longer, I'm losing my block for SMART...