"Larry just out of curiosity is this a seperate circuit to the panel or a tap off of an existing circuit?"
Actually, this is fed from a 4-space/8-circuit G.E. sub-panel just above in the wall, fed via a 6/3 NM on a 50a. 2-pole breaker in my main panel. I used the G.E. because the breakers aren't centered in the enclosure:
Note the yellow RCA cord; this is a 12v. trigger from my surround pre/pro. There is a 25a, 4-pole contactor inside the panel which switches 4 of the 8 circuits. I had to cascade several relays because the pre/pro trigger is only capable of 15ma.
The 12v. output operates a reed relay with 1a. contacts, which in turn controls a 120v-coil, 10a-contact relay, which in turn operates the contactor. The reed relay contacts can't handle contactor's current directly.
(Yes, I know it's illegal to have misc equipment in a panel. Hey, after all, I'm a professional, so I know how to break the rules properly!)