The square D 320 amp ringless meter socket with lever bypass surface mounts to provide for a single electric meter. It accommodates multiple wiring configurations for a-l size hub provision in the top end wall and 3-1/2 in. Maximum knockouts. The meter main uses an aluminum bus, is for single phase, three wire systems, and features a nema 3R rated enclosure for outdoor use. This unit is UL listed for use as service entrance equipment with a maximum load of 600 vac max. This 4-jaw meter socket is compatible with #600Mcm maximum or dual #350Mcm maximum conductors with applicable connector kits for line, load and neutral.