PW0816B1200TC 200-Amp 8-Space 16-Circuit Main Breaker Outdoor Trailer Panel Load Center Single phase 200 Amp main breaker load center with 8 spaces/16 circuits Tin-plated Copper Bus Bars Features Siemens patented insta-wire technology which allows for quick and easy installation because screws are already backed out, ready for wire insertion on ground and neutral bars All devices are provided with 2 factory installed ground bars Mounting tabs on the trim hold the load center in place freeing up both hands to drive the trim screws