Self-Test Portable GFCI Cord Length 3 ft Color Black Max Amps 20 A Plug Configuration NEMA 5-20P Receptacle Configuration NEMA 5-20R Enclosure Rating NEMA 3R Number of Outlets 1 Trade Designation SJTW Voltage 120V AC Hz 60 Hz Wire Size 12 AWG Number of Conductors 3 Housing Material PVC