I came across the same situation: SER in 21/2" pvc #80 outside od house. 50' run,2-90% and 1-LB then to meter main. Cable tech. drill a hole in the conduit and shorted out the feed. I told them that I needed to replace the conduit and install the correct cable (THHN). What you had was a violation. They said prove it. I opened up the code book and look & look, but could not find any thing to support my statement. It would seem that SER in such a run of pvc would be wrong. Maybe ampacity,number of conductors in conduit would play out in the code? Would that large of SER 200amp size bent in a LB a violation. That must have been someting to install. Or my last one was "not completing conduit run before installing cable". ????