"I am no expert on these things so what do I look for to determine if the outlet ground is connected?"Neither am I. (I THINK there's a copper wire in the middle of the thing that screws down.) Etbaby may know. I'll bet Albert Porter knows, too. I had an electrician install the Porter Ports for the dedicated circuit that we recently added. For me, one of the downsides of attempting something like that as a "do-it-yourself" project would have been the somewhat unpleasant prospect of getting electrocuted.....
-Bill