Double-pole, 240-Volt, 15 Amp GFCI circuit breaker to create two 15amp 120 circuits for switched split receptacles. Im trying to figure if i can share a neutral after GFCI dual pole breaker so i can create switched legs for split receptacles down the line. I have red black, green and white in a conduit to an outside box. Can i use a gfci 240 breaker? Will it trip when one leg is switched on or off?