Watertight Devices, Locking Devices, Male Plug, 15A 277V AC, 2-Pole 3-Wire Grounding, L7-15P, Screw Terminal, Yellow, Water/Dust-Tight Housing. Triple bypass seal keeps water away from electrical connections and works with previously installed devices. Corrosion-resistant connection points. High conductivity brass termination. Cone seal accomodates any cable range. Keyed interior for easy installation.