Solar ready combination service entrance devices are available with ring or ringless type meter socket designs. Supplied with 100% branch neutrals, all unused terminals may be used for equipment grounding wires. These solar ready combination service entrance devices meet the California Title 24 requirements and are suitable for use with Photovoltaic system applications. This QO combination service entrance meter main unit has a ringed meter socket with no bypass. The main service disconnect is rated at 100 A and has a short circuit rating 22 kA. It has a QO plug on neutral load center that has 8 spaces and 16 circuits. This unit has a NEMA 3R enclosure that is surface mounted and underground service feed only. The line side lugs will accept 4 AWG to 300 kcmil copper or aluminum wire. The service ground lug will accept 8 AWG to 2/0 AWG copper or aluminum wire. This QO combination service entrance meter main unit is UL Listed and meets EUSERC standards.