DrewE wrote:
If everything in the RV is up to snuff, there's no reason why a GFCI outlet shouldn't work fine, in the vast majority of cases at least. Most times when an RV trips a GFCI it's due to an actual problem somewhere: a neutral/ground short, or a leaky heating element in the fridge or water heater, or what have you.
(You need hundreds of feet of wiring for capacitive coupling to become sufficient to trip a GFCI, or maybe a dozen or so electronic devices with three prong plugs and RFI filters.)
As a master electrician Ii did side by side testing on my 2 trailers. It has also been verified by many others on different forums. Lots of times 2 GFI outlets in series do not play nice. Neither of my trailers would work on with 2 GFI's in series. Either turn off the RV gfi circuit or plug into a non gfi outlet and everything was fine.