Specifications:   This heavy-duty power extension cord or heavy-duty power extension cable has connectors for the North American (NA) market. It features a molded NEMA 5-15P  plug to a molded NEMA L5-20R locking receptacle. 12 gauge 3 conductor SJTW type wire, 1 foot in length, yellow and black in color, rated to 20 amperages and 125 volts. Temperature rating is 105°C.