FoehnLeigh wrote:
Second-guess your RV Park and check their power pole for any hot neutrals before you plug in your RV. Hot neutrals can be dangerous since the breakers in your RV only work when connected on the hot side. When power-pole outlets are wired backwards, a hot neutral results. This means your RV breakers will not trip during a short.
Breakers may or may not trip with a reverse polarity (hot neutral) short, depending on where the short is. A short from "neutral" to ground—what would normally be a ground fault—will not cause the breaker to trip because the fault current is not flowing through the breaker. A short from "neutral" to hot will trip the breaker, same as before, because the fault current does flow through the breaker.
Breakers are not polarity sensitive, nor indeed is there really any polarity at all on an AC circuit when viewed in isolation. They will respond to any overcurrent situation where the current flows through them.
A reversed polarity receptacle is indeed a dangerous and potentially disastrous problem; I don't want to suggest otherwise.
