Nearby Lightning causes only one GFI breaker to trip.
I have a sub-panel in my garage which feeds all the lights and receptacles in the garage (detached). All of the breakers in the panel are GFI. One of the breakers feeds the 2 garage door openers only. Every time there is an electrical storm, the garage door opener GFI breaker trips if there is a a lot of lightning activity. The none of the other breakers trip, only the one for the 2 door openers trip. Any ideas?
The doors are Clopay steel doors along with the associated brackets and guides. Is it possible the doors build a static charge and maybe should be grounded to discharge the static?
I had a situation a few years ago when lightning struck nearby, the obstruction sensors actually blew apart and the circuit board in the opener fried. I've since put individual surge protectors on the openers and haven't had that problem again, just the tripping breaker.