el. contractor has left (residential house) - checking the branch outlets: Hot to neutral: 118.8V // Hot to Ground: 0V // Neutral to Ground: 119.2V?? How come? should I be getting such voltage perhaps on Hot to Ground and Neutral to Ground some fractions, perhaps 2V or less?? Briefly looking into the breaker panel box - blacks wire (hot) to breaker - white (neutral) to side conn.- green (ground), above white wire connectors to a similar connector? Did they switch somehow hot for neutral? Maybe I mistakenly believe that the right hand opening in in the outlet is neutral? (although black wire goes there?
1right side or left side depends on whether ground is up or down. the neutral slot is slightly larger than the hot slot.– SkaperenJun 6, 2015 at 11:16
1If you are testing a receptacle, the polarity could be reversed.– KrisJun 6, 2015 at 12:47
Hot and Neutral reversed - as the "hot to ground = 0V" reading confirms.
The Brass-colored screw gets the black/hot wire, the Silver-colored screw gets the white/neutral wire, and the wider blade looking at the outlet is neutral. That's left if the ground is down, right if the ground is up.
The Green-colored screw gets the green/bare ground wire.
A $5 or so plug in outlet tester (might as well get the GFCI-Testing version) will confirm these things easily without needing three tests and without potential for error in what is supposed to be what.