Great write up and interesting
Is the 200 amp main on a dedicated or shared transformer?
Having worked with and around electricity since the mid 60's (primarily 3 phase and mc) this is one of the few times I have heard of and or experienced neautral or ground issues back feeding
I think there is a ground fault somewhere close that hasn't blown a main fuse or breaker, yet
Glad you got it resolved and no fire happened
Sounds great about the Son, best of luck
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