I have a project that consist of existing shore power pedestals on a commercial dock. The customer is experiencing troubles, once the tide gets extremely high and over the dock, the pedestals get submerged under water. The question is about 2- 50amp pedestals being powered by a 100amp 240v breaker, and when the water reaches the studs on the pedestal, the 100 amp breaker does not open up. The breaker is a 100amp CH 240v 10AIC Rated Breaker. What breaker type could we suggest to use in order for these breakers to open up? There are approximately 10- 100amp breakers and 20- 30amp breakers on the dock. We will use 30amp GFCI breakers to correct the 30amp pedestals, but the 100amp breakers do not come in as GFCI breakers.