Milbank 200 Amp 4 Terminal Ring Type Overhead Meter Socket is rated for 200 Amp continuous, 250 Amp maximum up to 600 VAC. The meter socket is UL listed for overhead or underground service applications. This meter socket has a hub opening that accepts 1 to 2-1/2 in. hub or closing plate. 2 in. hub included. Hubs and closing plate sold separately.