Marinco 305C Female 125V/30A Twist-Lock Inline Connector (Black)30A 125V Standard NEMA Locking Connector Specifications Item Connector, locking Rating 30 amperes, 125 volts, single phase, 2 pole, 3 wire. Configuration NEMA L5 30R Materials All plastic parts are nylon with CTI greater than 600 volts. Terminals Clamp type, with color coded brass terminal screws, 10 32. Contacts Contacts are single piece, rivetless, brass, 0. 032" thick. Cord Clamp Internal, with removable insert to accommodate cable from . 325" (16