complaints when using a hughes autoformer
I am looking at a used hughes autoformer. I know some parks rules say they are not allowed. Some parks we have been in, I have seen voltage at @ 102 to 104 with my a/c on. I would be using a PI 3o...
Forum Discussion
Dutch_12078 wrote:Ralph Cramden wrote:
No mention in this thread of high voltage conditions. I have experienced that at certain parks on occasion and have seen voltage beyond the PI cutoff point more than once, such as 146 volts. In that case an EMS is your only defense as 140 will instantly fry most microwave control circuits even if internally fused, and the fridge element will be toast along with the 5 amp fuse on the board itself, possibly even the entire board.
I've never seen a voltage higher than the 127 volt max Range B ANSI
utilization standard so far, and my SurgeGuard also cuts off for high voltage, although I don't recall off hand what the limit is for that.
The PI EMS high voltage threshold is 132. At one PA tate park with older wiring and shared pedestals, I have seen voltages higher than that threshold, and the park maintenance super and I can recreate it.
What it takes is for two RVs to be plugged into the common pedestal at the end of the circuit, and 4 or 5 RVs pulling high loads between said pedestal and the MDP in the middle of the circuit. They were unable to find what causes it, or correct it. It's not like they devoted a lot of time to it either. The voltage at the MDP read a constant 116 volts.
