Forum Discussion

Speedogomer's avatar
Speedogomer
Explorer
Jun 29, 2014

Reversed Polarity Issues?

I ordered a simple voltage monitor for testing power supply at campgrounds. Reads voltage, and if there is correct polarity, or open ground.

My parents own part of a small lake, that they've made into a sort of private campground. They have electricity run there, with 3 different 30amp connections. Today I brought my TT there to have it ready for our annual 4th of July celebrations and decided to use my voltage monitor. Voltage was fine 120 volts reading, but it read reversed polarity on all 3 hookups. The lone 20 amp standard outlet read correct polarity.

We've had several RV'S connected there for 2 years. Never had an issue at all. My parents RV is there most the summer. My question is what sort of issues can reversed polarity cause? I'm hoping my voltage monitor isncorrect, because today we switched the hot and neutral wires on all the hookups so they now read correct polarity.
  • Reverse polarity on AC power means that the Hot & Neutral have been switched.

    Turn off an AC circuit breaker and you interrupt the hot side.........but if reversed the neutral is hot and would still be energized. Not good from maintenance safety point.

    Fix it before somebody gets electrocuted working on a hot circuit
  • Can be dangerous in the event of a failure in something like the water heater or fridge. Also I don't think the GFCI's will function correctly.
    I would open them up and swap the connections on the back of the outlets. It's easy and there's no sense in keeping it wrong.
  • Seldom is it ever an issue but it was good to correct before you did have a problem. In my view it is more for safety. A lot of battery back up for computers will test for this and people did not even know about the wiring issue.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,203 PostsLatest Activity: Feb 22, 2025