L6-30 Extension Power Cord, 15 Foot - 30A, 250V, 10/3 Wire HEAVY DUTY - Featuring an L6-30P Plug to L6-30R Connector. Rated for 30 Amps and 250V. WEATHER RESISTANT CONSTRUCTION  This fully sealed L6-30 molded extension cord provide excellent protection from oils, water, and dirt. EMERGENCY READY  Equipped with superior weatherproofing, you can count on reliable 30 amp power flow, especially in those extreme situations. Compatible with any generator equipped with a L6-30 receptacle. INDOOR AND OUTDOOR  Made for various uses both indoor and outdoor these cords are molded with heavy duty 10/3 SJOOW wire capable of being buried directly in the ground. THE WORLD'S LEADING POWER CORD SUPPLIER - Iron Box sells UL listed power cords with only the best components and wire.