GFCI tripping
GFCIs are succeptable to tripping in damp locations. It's not unusual to have them trip during the humid months of the year. As mentioned in an earlier post, thunderstorms also cause tripping.
If a GFCI has tripped several times over a period of time, the mechanism inside the receptacle will weaken. causing more false interruptions. That's when it's time to install a new one.
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