The Nema L14-30P/L14-30R 10 Gauge, Heavy-Duty, Yellow Etl-Listed, 10 Foot, 30 High Quality: 10 foot 4 prong generator extension cord 30amp, STW 125/250V, 3750W/7500W, NEMA L14-30P to L14-30R. Ideal for connecting portable generator to manual transfer switch, house and outdoor RV use. Made of pure copper, avoid overheating due to long-time use, more durable and safe. Weatherproof Durable: Heavy Duty Outdoor generator cord 30 amp 4 prong exhibits excellent weather resistance IP65 waterproof, making it suitable for use in various weather conditions, including sunlight, rain, and low temperatures (-40C). It is constructed with high-quality materials and is heat-resistant, flame-retardant, corrosion-resistant, wear-resistant ensuring safer and more reliable. Twist Locking Design: The twist lock plug prevents cord falling off due to external force in various severe weather conditions. Easy grip and strain relief plug and socket design ensures the plug can bent at any angle without breaking Flexible Easy to Storage: L14-30 generator cord 10 ft jacket is made with solid and flexible material, allowing for easy bending and storage, adapting to different layouts and environments. Additionally, Equipped with an adjustable cord organizer that enables neat coiling of the cord and hanging, making storage and transportation hassle-free and preventing tangling and confusion. ETL Service: 3 years promise 4 prong generator cord 30 amp 10FT. Your satisfaction is our greatest pursuit, if you may encounter problems during use, you can always contact us, and we will solve it in 24 hours.