I am in the process of hooking a new electric service a spa ,the disconnect on the wall located 9 feet away has a 2 pole 20amp gfci breaker and a 30 amp 2 pole gfci breaker, I tryed to call the technicians yesterday but they will be open today in the master unit in the spa it has 5 places for terminations it shows the 20 amp gfci breaker just to be connected to the neutral bar on the 30 gfci brk it shows the white wire to run to the spa the terminal to the terminal board . Can any one help me in explaining the reason for 2 breakers running to the spa?