Meter socket, BS4 Series, 200A 600V. Conductor range: Line: Dual rated connectors for 1 x 4 AWG-600 kcmil or 2 x 1/0 AWG-250 kcmil, Load: 6 AWG-250 kcmil. Aluminum tunnel type connectors for both load and line sides. Supplied with screw type rings. Weatherproof Type 3R enclosure.