iwire ---
This appears to be an existing situation that does not require inspection.
I believe the question was concerned with waste of electricity no code compliance. That is why my answer was different than yours.
Consider the following:
We have a 120v subpanel with a 20amp main breaker. The panel has 10 20amp circuits. All of the circuits are run through 1 6" conduit.
The perscriptive code requires the conductors be derated. I agree that the code and the inspector would require derating. But derating is foolish in this case.
