DRYER CORD FEATURES: 3 Prong dryer extension cord 15ft 30amp, NEMA 10-30 plug to NEMA 10-30 receptacle, rated for 125V/250V, support max rate of 7500 watts, ideal for 240v dryer extension power and outdoor RV use; made of pure copper, avoid overheating from long-time use; ETL Listed, more durable and safe WEATHER-RESISTANT ELECTRIC CORD: 30AMP dryer extension cord 3 prong exhibits excellent weather resistance IP65 waterproof, ensuring long-lasting and heat-resistant. No matter in rain, wind or snow, this high-quality nema 10-30 extension cord could provide a safer and more reliable experience for you