Don
If you identify the grounded service-conductor per Article 200, that would mean you would have to mark the bare grounded conductor with paint or tape if the conductor is larger than 6 AWG. If the conductor is #6 AWG or smaller the identification would have to continuous the entire length of the conductor. This would conflict with section 230.41 that permits the conductor to be bare. What would an electrician say about the inspector that required white tape or paint on the bare conductor?