This Thomas and Betts meter socket is designed for use with underground service entrance feeds. The 200-Amp, 600-volt meter base features a weatherproof Type 3R enclosure. It has a screw type ring (included), six concentric knockouts and four jaws. It is suitable for use with a 350 kcmil max. single line (supplied by utility) with a 6 AWG to 250 kcmil load. This meter enclosure is primarily used in the provinces of Ontario. Meter sold separately.