As an update...I plugged an extension cord into the dead bar outlet and then tested continuity between the black wire/small plug, white wire/large plug, and ground/ground and got continuity (0) between all of them. I then tested all the other possible combinations (black wire/large plug, black...
I have an outlet in a small bar area that does not have any power coming in to the wires. It's been like this for as long as we've been here (4 years, house is 20 years old). I checked every breaker, every light switch, and every GFCI and it doesn't appear to be attached to any of them. I found...