Hi All....Back from the Keys and this issue is resolved, finally. Thought I'd let everyone know the outcome.
All of you who thought the coach had an electrical problem get an A+.
We had an amazing amount of trouble with this problem while on vacation, effectively ruining it, but that's another story.
The problem was a bad charger/inverter. The charger section was apparently shorted out and was back-feeding 117 VAC to the neutral bar in the house panel!!! Replaced the charger and fixed the problem. Now I can plug into my GFI with no problem whatsoever. I can only wonder, however at the detrimental effect on all my AC appliances in the long run.
If the service (and I use the term loosely) department at my dealer had listened to me and just checked things out with a simple meter, all my difficulties on the road could have been averted, but alas, they are too busy to do their job correctly. Monaco Coach gets an F for not giving enough concern to the question when I asked it in the beginning too. but then THEY had to pay the price for the road service. -Ron