Thanks, it really does make a difference reading it :thumbsup:I’ve broken all that into paragraphs- thanks telsa- hope that it makes it easier to make sense of and someone is able to pass along some ideas. Cheers.
I'd focus on the incoming service. Either a bad Tx, or a neighbour is passing neutral current to this service.
Measure the current on the ground wire, I think you'll see current. If it stays there when you shut off the main, you know it's from someone else.
If you don't find anything there, then do the same with the neutral on the service.
*edit* adding a ground rod at the trailer will only hide the problem, but will fix the tingle problem