Greg- I'm starting to think that you aren't in favor of having a insulated and isolated grounding conductor run back to the source. I hope that's not why you are objecting to use of the concept. The fact remains if you see an orange triangle on a receptacle don't you expect that the installer has run a insulated grounding conductor back to the source- because if he didn't he/she has defeated any benefit that might be there with an IG circuit. One can dispute the benefit for sure and I have my doubts on the benefit or need for such an installation. You've had more experience than I have because of your exposure to the computer facet of our industry. Maybe the benefit is dubious at best but the circuit should be installed as having a clean ground based on the orange triangle. That's, as they say "My Final Answer".
