the 120V side, I plugged a pigtail that led to a GFI. I then plugged my trailer into that. I made sure all grounds were good. The inverter was grounded to the frame and the trailer skin, as was the GFI. I fried three GFI's before I gave that idea up. I replaced the GFI with a standard grounded outlet. Everything has been fine since.
I asked this question before and got a totally paranoid response. I am going to ask it again but please don't let it be an arguement.
The questions is: Will a GFCI protect from a floating ground if it happens.
Floating ground---if a ground is run to the chassis(metal frame) and there is a fault anywhere in the electrical causing the ground to earth to no longer exist.)
It seems to me that this is exactly what a GFCI is intended to protect against. Maybe I'm looking at it wrong. Any ideas.
This question is in no way intended as an endorsement of grounding to the frame or not. I haven't been involved in anything electrical personally for a long time and Mike C. hates GFCI's for the above reason (Stans quote) and all the electricians I know won't give an answer because they are unfamiliar with trailer building.
Stan, I would so check to see if I had a leaky something. One GFCI or even two I would blame on faulty sensitive equipment. A third would cause me to think the things were sensitive and picking up something.