30 Amp, 250 Volt, NEMA L6-30P, 2P, 3W, Locking Plug, Industrial Grade, Grounding - YELLOW-WHITE. NOTABLE FEATURES: Leviton’s industry leading locking devices, such as our Black & White line of industrial grade plugs and connectors and receptacles, offer superior performance, long lasting reliability and other features that are backed by a lifetime warranty.