I tested the outlet with an outlet tester which states that it is properly wired. However, I know that conduit is not necessarily always sufficient to provide a proper ground. So I tested the outlet with a multimeter. I get 120.5 volts when testing the line and neutral, as well as when I test the line to the ground hole on the outlet. So it seems that the conduit is properly grounded.
I need to add an outlet nearby this outlet... but how do I properly tie in a romex cable to this situation?
Unrelated but similar question: I also have several outlets that are not grounded outlets. However, if they are run through conduit that is properly grounded, I might switch out the outlets... But should I instead be rewiring everything? We are closing up the attic floors as we create a master suite in the attic. Seems like the next few months is my last good chance to rewire anything... but I'd rather just switch out the outlets as the time and money invested on that does not seem worth it.