solved by rearranging the circuits
We had a similar problem with our garage refrigerator. The GFCI in the garage would sometimes trip after a storm. It turned out that the GFCI nearest the garage door served to protect that outlet and all of the outlets on the outside wall of the house. The refrigerator and golf cart were plugged into that outlet. Water would get into one of the outlets outside and would trip the GFCI. My solution was to change the wiring in the GFCI so it did not protect the outside outlets.
Then I found the next outlet in the chain of outdoor outlets and installed a new GFCI in that box. The new GFCI provided the needed protection but it's tripping would not shut off the refrigerator or golf cart. Much cheaper than running a new circuit for the refrigerator.
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