CA Traveler wrote:
BTW For many reasons and especially for 50A power I installed a PI HW50C EMS 19 years ago now in it's second RV. One month later I had 160V at night with a 30A plug. The EMS disconnected and I pulled the plug as I knew the problem was a open neutral.
So as a open question how do you get 160V with a open neutral on a 30A plug?
Your usage may have been on the 30 amp outlet (one hot).
But, very likely the neutral "upstream" of your site was wired with both L1 and L2. And, an open neutral upstream of you can cause this even if you are just using one hot.