The fuse holder must have been upgrade, WHERE CAN I BUY ONE?
no luck greenmtn or ebay
You are making this more complicated then it has to be.
1. Option #1. Buy a cheap in line fuse holder, available in any auto parts store, with a 10 amp fuse. Install it in line, on the black wire.
2. Option #2. Buy a newer GFI. I am sure there are some available here in the forum, from someone who has an extra or a parts machine. Or in fleebay.
Here is the story. The first run of gen sets bought were outfitted by LIBBY. They put a GFI,
(part #19990-1) in the sets, and were happy. But the Army wanted a fuse to protect things, so the fuse and holder were bought and issued to be installed. If you really want the actual part numbers, I can give them to you. But its just as easy to buy any old in line fuse holder and a 10 A fuse.
Then the second batch of gen sets were bought and installed by TRC. They made things easier by installing a GFI,
(Part #19450-1) with a built in 10 Amp breaker.
I found a TRC GFI in flebay for 160.00 bucks. Sounds like a lot of money to pay for a 10 amp fuse.