I have installed isolated ground circuits before and know that there are essentially two grounds, one for the equipment (ground terminal) and the other for the grounding of the outlet and yoke assembly. I am currently bidding a job where the AHJ allows for romex to be installed in a commercial application as long as it is stick built construction. This will be a doctor's office. If I am using romex do I pull a 12/3 w/ground as opposeed to a 12/2 and can I loop them out if they would like the option of moving the same piece of equipment from one side of the room to the other?