Solar, I think that for the most part, the SCCR is being ignored, mostly because they don't recognize when it can be an issue. On residential, it would probably show up on a multifamily dwelling where a bigger transformer would be used to serve a number of dwellings. On single family dwellings, at least in my part of thw world, it would never be an issue. It's not uncommon to see a 25KVA xfmr feed 3 houses with 100 feet of service conductor. Where you are at I would expect that the AHJ's to be up on things pretty good.