Slight correction to my previous post. Revise the last major paragraph to read as follows:
Finally, if an IG receptacle were to be installed where there is no conduit or other path for the junction box and the non-isolated metal parts of the outlet to be connected to ground, aside from via a single ground wire in the cable, from a safety standpoint the isolated ground connection on the outlet and the non-isolated metalwork on it and the box would have to be connected together. Which would essentially convert the IG receptacle into a non-IG receptacle. And I suspect doing that would not be code compliant because the triangle marking on the outlet would be incorrect in that situation.
Best regards,
-- Al
Finally, if an IG receptacle were to be installed where there is no conduit or other path for the junction box and the non-isolated metal parts of the outlet to be connected to ground, aside from via a single ground wire in the cable, from a safety standpoint the isolated ground connection on the outlet and the non-isolated metalwork on it and the box would have to be connected together. Which would essentially convert the IG receptacle into a non-IG receptacle. And I suspect doing that would not be code compliant because the triangle marking on the outlet would be incorrect in that situation.
Best regards,
-- Al