SPEEDWOW 20 FT 50 Amp RV Extension Cord, 125/250V Heavy Duty Extension Cord with Generator Inlet Box, 6/3+8/1 Gauge STW ETL Listed, NEMA 14-50P to SS2-50R, Waterproof Power Cord for RV Outdoor Home

<p>SPEEDWOW 50-Amp RV Power Extension Cord &amp; Inlet Box Kit – Your Ultimate Outdoor Power Solution. Engineered for heavy-duty use, this ETL-certified kit features a high-conductivity 100% copper cable and a weather-resistant inlet box, ensuring reliable power delivery for RVs, generators, camping, and emergency backup. Built to withstand harsh conditions with its all-weather durability, ergonomic handle, and tangle-free storage design, it provides safe, convenient, and continuous electricity wherever your adventures take you.</p><p><strong>Specifications:</strong></p><p>Product Length: 20 FT</p><p>Max Current: 50A</p><p>Voltage: 125V / 250V</p><p>Female Plug: NEMA SS2-50R</p><p>Male Plug: NEMA14-50P</p><p>Max Power: 12500W</p><p>Wire Gauge: STW 6/3 + 8/1 AWG</p><p>Operating Temperature: -40°F to 140°F</p><p>Net Weight: 17.4 lbs</p><p>inlet box internal space size: 3.1 in</p><p>Package Dimensions(L x W x H): 14.2 x 14.2 x 7.48 in</p><p><strong>Package Content:</strong></p><p>1 x RV Extension Cord</p><p>1 x Adjustable Cable Winder</p><p>1 x Manual</p><p>1 x Warning Label</p><p>1 x Power Inlet Box</p><p>6 x Screws</p><p>6 x Screw Fastening Sleeves</p>

• ➤【50-Amp RV Extension Cord】Engineered for high-power applications. Features a 4/3+8/1 AWG configuration (3 x 6 AWG conductors + 1 x 8 AWG ground wire) with 100% pure copper for maximum conductivity. Equipped with a standard adapter-style NEMA 14-50P male to SS2-50R female plug, compatible with most 50A RVs and generators. Its dual-voltage 125/250V design supports up to 12,500W of power output. The heavy-duty, flame-retardant PVC jacket offers superior abrasion and weather resistance, built to withstand tough outdoor conditions. Optimized wire gauge minimizes voltage drop over long distances.
• ➤【50 Amp Generator Inlet Box】Comes with an SS2-50P three-prong plug that works with all NEMA SS2-50 standard 50-amp generator cords. The upgraded design includes four pre-drilled mounting holes for easy, tool-free installation. Dual-side cable entry and a spacious interior allow smooth routing of thick cables through pre-set ports. The roomy layout ensures cleaner wiring, better heat dissipation, and extended product life.
• ➤【ETL-Certified Safety】This 20ft 50-amp RV power cord and inlet box kit is ETL-certified, delivering reliable and safe outdoor power. The inlet box includes a safety indicator light—green means go. For optimal performance, fully extend the cable during use to prevent overheating and verify that the 4-prong plug (NEMA 14-50P) matches your outlet. Designed specifically for RVs, this extension solution offers a safer, more convenient power experience.
• ➤【All-Weather Durability】Built with high-purity stranded copper cores and rated IP68 for complete waterproof protection. A dual-layer STW sleeve and heavy-duty flame-retardant heat-resistant PVC exterior guard against sun, rain, and physical wear while remaining flexible for easy storage. The female connector features an adjustable threaded locking ring for a secure, waterproof seal. The heavy-gauge metal inlet box is coated with anti-rust finish and uses a twist-lock connector to ensure a solid, weatherproof connection that stands up to rain, wind, and corrosion. The flip-cover design, paired with an internal high-density waterproof gasket, effectively keeps out dust and moisture for long-lasting reliability.
• ➤【Ergonomic Handle Design】The ergonomically shaped handle offers a comfortable, secure grip that fits naturally in your hand. It makes plugging and unplugging easier while reducing strain on the plug and cord—enhancing durability and safety.
• ➤【Flexible & Easy to Store】Made from tough yet flexible materials that stay pliable even in temperatures as low as -40°F, resisting kinks and cracks in harsh outdoor environments. Includes an adjustable cable winder for neat coiling and hanging—making transport and storage tidy, tangle-free, and convenient.
• ➤【Wide Range of Uses】This outdoor extension cord provides a reliable backup power supply during emergency outages and delivers stable, high-output electricity for camping, RV hookups, yacht power, job sites, and outdoor events. Whether responding to unexpected situations or meeting daily outdoor power needs, it ensures safe, dependable power anytime, anywhere—so you never have to worry about staying connected.