Transfer Switches Symphony power management allows you to prioritize up to 8 high-wattage appliances based on your power needs. The Symphony power management system balances electrical loads for optimal efficiencies allowing for the purchase of a smaller standby generator. A service entrance is the location where electricity enters the building. Service entry rated switches are UL 1008 listed and use a UL 489 listed circuit breaker. Usually installed outside next to your electric meter or inside next to your circuit breaker box, a transfer switch senses when your utility power is out and automatically switches the home over to generator power. 120/240 V 1-phase Briggs & Stratton Transfer Switches Mfg. part # Description BSE Part # 71047 100 amp 16 circuit transfer switch with NEMA 3R enclosure 3385361 71100 100 amp transfer switch with NEMA 3R enclosure 3379472 71150 150 amp transfer switch with NEMA 3R enclosure 3379473 71200 200 amp transfer switch with NEMA 3R enclosure 3379474 71071 100 amp transfer switch with Symphony power management and NEMA 3R enclosure 3379475 71070 150 amp transfer switch with Symphony power management and NEMA 3R enclosure 3379476 71068 200 amp transfer switch with Symphony power management and NEMA 3R enclosure 3379477 [/vc_column_text] 120/240 V 1-phase Cummins Transfer Switches Mfg. part # Description BSE Part # A045P692 100 amp transfer switch with NEMA 3R enclosure 3406973 A045P694 200 amp transfer switch with NEMA 3R enclosure 3406975 A045P696 100 amp transfer switch with NEMA 3R enclosure service entrance rated 3406974 A045P697 200 amp transfer switch with NEMA 3R enclosure service entrance rated 3406976 [/vc_column][/vc_row]