GFIC breaker tripping

[Dave31410]

We have had a lot of afternoon thunderstorms this year. It seems that whenever there is a lightning strike fairly close (less than 2 seconds to thunder) the GFI breaker in the main panel trips. The breaker feeds a sub panel with individual breakers for pump, chlorine generator, light and auxiliary outlet. (1) Is this to be expected or should I change the breaker? (2) Would it be better to use a regular breaker in the main panel and individual GFI breakers in the sub panel? Anecdotally we took a weeklong trip not long ago and everything was good when we left. Upon return the pump was off and the pool was turning green.

 

[1poolman1]

We have had a lot of afternoon thunderstorms this year. It seems that whenever there is a lightning strike fairly close (less than 2 seconds to thunder) the GFI breaker in the main panel trips. The breaker feeds a sub panel with individual breakers for pump, chlorine generator, light and auxiliary outlet. (1) Is this to be expected or should I change the breaker? (2) Would it be better to use a regular breaker in the main panel and individual GFI breakers in the sub panel? Anecdotally we took a weeklong trip not long ago and everything was good when we left. Upon return the pump was off and the pool was turning green.

Yo may want to look into installing a whole-house surge protector like this:

https://www.amazon.com/Square-HEPD25-1-phase-3-wire-Protection/dp/B00CONGN7U/ref=asc_df_B00CONGN7U/?tag=hyprod-20&linkCode=df0&hvadid=693606546450&hvpos=&hvnetw=g&hvrand=3309420521368974140&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9032550&hvtargid=pla-1810492090996&mcid=95d145f66fdb3e7aae41c7b45d22d0cf&gad_source=1&th=1

 

[ajw22]

Individual GFCI breakers would work better.

A Class A GFCI trips when the current to ground has a value in the range of 4mA to 6 mA

If each device has 2 mA of leakage and is on its own GFCI breaker it will be no problem. But put a few devices on one GFCI CB then the cumulative leakage will trip it.

Electrical GFCI - Further Reading

www.troublefreepool.com