In my case it didn't help. I started using surge protectors on my Renards years ago but for a different reason. It seemed to help with some triac issues early on....but since I upgraded the triacs I haven't had a problem but just kept using the surge protectors anyway....just in case.I added a surge protector to my display based on this. The idea is--and I base this on some of the intermittent behavior I have seen when it is wet--that there are surges going from hot to earth as well. Surge protectors can have things like capacitors and reverse-biased diodes, which try to smooth out surges, long before it just throws up its hands, gives up, and trips. Maybe surge protection can smooth out any transient currents to earth before it reaches the GFCI breaker.