The Square D 200 Amp Residential Ringless Meter Socket with horn bypass surface mounts to provide for a single electric meter. It accommodates multiple wiring configurations for A size hub provision in the top end wall and a 2-1/2 in. maximum knockout in the bottom end-wall. The electrical meter box uses an aluminum bus, is single phase, three wires, and features a NEMA 3R rated enclosure for outdoor use. This unit is ANSI certified and UL listed for use as service entrance equipment with a maximum load of 600 VAC Max. This 4-jaw meter socket is compatible with and neutral.