Milbank Ringless 3-wire single position meter socket with a voltage and current rating of 600 V/320 A measuring 15 Inch x 4-7/8 Inch x 30 Inch features a underground service type. 1-Phase socket with gray polyester powder coated finish has 4 AWG - 600 KCMIL, two 1/0 AWG - 250 KCMIL aluminum/copper line side terminal and 6 AWG - 350 KCMIL aluminum/copper load side terminal is ideal for meter mounting base applications. 4-Jaw surface mount socket with G90 galvanized steel enclosure has plain top and blank hub. It is UL listed and meets NEMA 3R certification. Also known as -Milbank U1797-O-K3L-K2L Ringless 3-Wire Single Position Meter Socket 600 Volt 3