I have 14 ground fault circuits split 7 on each side of my panel. I have recently had 5 or six trip on the left side and 1 or 2 on the right. It happens at all hours. It appears I have some kind of problem mainly on the left. It is a Square D box with all square D breakers and a single ground stake. I have had all trip in bad storms before. Thinking maybe I need to add more ground stakes.
Any ideas of what could be tripping the breakers like this?