When you need reliable outdoor power for RVs, homes, or emergency backup, a robust 50 amp generator cord with a 4-prong connection is essential. The following selections emphasize weatherproof locking, ETL certification, and durable STW wiring to handle peak loads while staying secure in challenging conditions. Each option is evaluated for compatibility with NEMA 14-50P and SS2-50R inlets, making them suitable for transfer switches, inlets, and weatherproof power setups.
Summary of selected products:
| Product | Length | Connector Type | Features |
|---|---|---|---|
| 50 Amp Generator Cord, 25FT | 25 ft | NEMA 14-50P / SS2-50R | Twist lock, weatherproof, ETL certified, STW wiring |
| 50 Amp Generator Cord, 15FT | 15 ft | NEMA 14-50P / SS2-50R | Twist lock, weatherproof, ETL certified, STW wiring |
| Nilight 50 Amp 50FT | 50 ft | NEMA 14-50P / SS2-50R & CS6364 | Pure copper, UL/ETL certified, heavy-duty jacket |
| POWGRN 25FT | 25 ft | NEMA 14-50P / 14-50R | STW, IP65 waterproof, insulated grip handle |
| 50 Amp Generator Cord, 50FT | 50 ft | NEMA 14-50P / SS2-50R | Twist lock, weatherproof, ETL certified, heavy-duty |
Product 1: 50 Amp Generator Cord, 25FT – Yellow
Product details: This 25-foot generator extension cord connects a 50-amp portable generator to a house inlet or transfer switch. The male end is NEMA 14-50P, and the female end is NEMA SS2-50R, both rated up to 12500W at 250V. It features a weatherproof twist-locking design with a threaded ring for a secure connection and an ETL-certified, heavy-duty STW power cord. It is built to endure outdoor use and harsh conditions, providing a reliable power supply during outages.
Product 2: 50 Amp Generator Cord, 15FT – Green
Product details: This 15-foot generator extension provides a safe link between a 50A portable generator and a home inlet or breaker panel. It uses NEMA 14-50P and SS2-50R connectors, rated for up to 12500W at 250V, with a weatherproof, locking threaded ring. The cord is ETL-certified and built with heavy-duty STW wiring for outdoor reliability and secure connections even in adverse weather.
Product 3: Nilight 50 Amp 50FT – Heavy Duty
Product details: This 50-foot extension uses 6/3+8/1 gauge copper with a STW jacket and UL/ETL certification. It supports NEMA 14-50P to SS2-50R and CS6364 configurations, delivering up to 12500W at 250V. The copper conductors offer low resistance for reduced voltage drop, while the flame-retardant jacket guards against outdoor wear. Suitable for RVs, homes, and remote power needs with durable protection in outdoor environments.
Product 4: POWGRN NEMA 14-50P to 14-50R – 25FT
Product details: This 25-foot extension cord supports Level 2 EV charging compatibility and 50A operation, with NEMA 14-50P to 14-50R connections. It features an IP65-rated outer jacket for weather resistance, copper conductors for efficient power delivery, and an insulated handle to simplify plugging and unplugging. The STW design emphasizes durability for outdoor use, and the cord is ETL-listed for safety compliance.
Product 5: 50 Amp Generator Cord, 50FT – Yellow
Product details: This 50-foot extension cord pairs a 50A SS2-50P inlet with a 50A SS2-50R outlet. The weatherproof, heavy-duty STW cord uses a locking twist-lock design to maintain a secure connection during storms and outdoor use. It is ETL-certified and built to handle up to 12500W at 250V, ensuring a stable backup power supply through outages or remote power needs.
Buying Guide
- Connector compatibility: Ensure the cord matches your inlet box, transfer switch, and generator outlets (NEMA 14-50P to SS2-50R). Correct prong configuration prevents mis-wiring and equipment damage.
- Length and voltage rating: Longer cords add voltage drop, especially under heavy load. Choose a length that minimizes drop while meeting your layout needs. All listed options support 12500W at 250V.
- Weatherproof and durability: Look for weatherproof locking connections, heavy-duty STW wiring, and flame-retardant jackets. ETL or UL certification indicates safety compliance.
- Ease of use: A grip-friendly handle and twist-lock mechanism simplify outdoor use, especially when connecting to generators in inclement weather or at night.
- Material quality: Copper conductors provide better conductivity than aluminum and reduce heat buildup under load. A robust outer jacket enhances resilience against abrasion and sun exposure.
- Safety features: Ensure cords have secure locking rings and are designed to remain connected during movement or wind. Avoid cords that lack proper strain relief or weather sealing.
- Use case diversity: For RV sites, back-up home power, or remote work sites, select a cord length that balances portability with safety and reliability requirements.