I have built a 200 amp 120/240v service to feed 3 new EV Car Chargers. The inspection is through the State of OHIO. I was turned down due to not having pvc slip fittings on my underground and have never in my life been required to install. What is the code reference that requires slip fittings in a commercial setting? The 2nd thing he turned me down for is not have burial tape in my trench above my pvc. i can see it requiring tape if it was 480v at which point i would have buried it in concrete anyway, Is there a code reference for this as well?