Meter Combos Meter Combos Dual MainsThe dual main offering includes a meter socket, two main breaker spaces separated by a barrier. Meter MainsThe meter main offering includes a meter socket with a single main breaker. Single MainsThe single main offering is optimized with a plug on neutral design. Solar–ready availability on select models. Publications Application and TechnicalBrochuresData SheetsInstallation and Instruction Other Load Centers, Meter Combos & Accessories Load Centers Accessories