I have a friend who has a Honda 3000w portable generator. He had it supplying power to a RV, and all things worked. He tried to use the microwave, and the GFCI on the generator tripped. Nothing else would trip this outlet.
He has tried using the microwave on other GFCI protected outlets (in his garage) and it works, with no problems.
He found he had an "open ground" on the generator outlet, using an outlet tester.
He has been in contact with a Honda repairman, who stated that the open ground was normal, as Honda does not connect the equipment ground wire to the outlet, due to problems with the outlet!!!
Has anyone experienced this same problem? Has anyone heard of this explaination before?
I have another friend with NEMA who I will contact about this, since I believe it is a hazard for Honda not to install the equipmentground wire to the outlet. I will let you know what happens.
Rick
