Siemens S2040L1200 is a load center with a maximum short circuit current rating of 100,000 amps RMS symmetrical. It can be used as service equipment when a main breaker is installed. Unused neutral bar terminals can be utilized to terminate equipment grounding wires in combinations indicated for equipment ground bar terminals. The load center can be installed by a qualified person in accordance with all local electrical codes and/or the National Electrical Code. It features a neutral/ground bar for 10-14 CU/10-12 AL and ground conductors only.