Still can't figure out polarity problem in barn...
I posted a while ago about getting a reversed polarity reading in two barns I have. The wired come in through the first barn, through a junction box, and to a 20 AMP switch that feeds the other barn, with some outlets and lights here and there. It is a mix #12 awg and #10 awg wiring, on a 30 amp breaker (yes I know I need to change it to a 20 amp breaker). The problem arises with the second barn. When I plug my polarity tester into an outlet in the first barn, it says polarity is fine, but when I turn on the switch to the other barn, polarity is completely reversed everywhere. Using a multimeter, I get around 117V going from neutral to hot and neutral to ground, with no voltage from hot to netural/ground, Unless I cut power to the second barn. I have opened all receptacles and junction boxes and can't find anything wrong with the wiring. Is it possible there is some sort of issue with the wires themselves in the romex? And ideas are appreciated, thanks.
Comment on hkstroud's post
I meant hot to ground sorry.
Comment on Kyle_in_rure's post
I can't post pictures because I'm not there today.
Comment on Kyle_in_rure's post
**line 3 correction: there ARE junction boxes...