Square D by Schneider Electric SC1624M100S Homeline 100-Amp 16-Space 24-Circuit Outdoor Surface Mount Main Breaker Combination Service Entrance Device Homeline 100 Amp 16-Space 24-Circuit Ring-Type Surface Mount Main Breaker Overhead/Underground Main Breaker CSED Accommodates plug-on secondary surge arrestor, and features a plug-in design for easy installation Use type HOM circuit breakers, Rated 120/240Vac, 4 jaw meter socket NEMA type 3R enclosure Note : PLEASE REFER THE VIDEO FOR ASSISTANCE