MICROELECTRIC® meter socket, BS4 series with left hand entry. Multiple position with blank compartment 200 A per position, 400 A (main lugs).Conductor range for line: Dual rated connectors for 1 x 4 AWG-600 kcmil or 2 x 1/0 AWG-250 kcmil, Load: 6 AWG-250 kcmil. Aluminium tunnel type connectors for both load and line sides. Factory prebussed from main lugs to each position. Combination overhead-underground. Supplied with hub opening closure plate for underground service. Supplied with screw type rings. Weatherproof type 3R enclosure.