Fault happened at the other connector inside the panel that I didnt take a picture of. No bushing on that side either, insulation rubbed through and it was over. Happened at night when no one was in the warehouse not sure how long it took the breaker to clear but it did trip. Not till everything melted though.That's an interesting one. I see an EGC, so I assume the fault occurred inside the flex itself, and the connections were high enough impedance that the breaker took forever to clear it?