The 10 best long generator cords of 2025

🚩【Powerful】:RVMATE 30 amp generator cord provides a safe and reliable electrical connection between your generator and power inlet box, allowing them to power appliances/devices during a power outage or in remote locations where electrical power is not available.

🚩【High Conductivity】 : Features a standard 30A (NEMA L14-30P) male plug and 30A (NEMA L14-30R) female connector. RVMATE generator power cord is ETL certificated, rating 10AWG/4C 30A 125/250V 3750/7500W. The conductor is 100% copper wires for superior conductivity.

🚩【Flexible, Safe & Durable】：The 4 prong 30 amp generator cord will remain flexible and easy to be winded up even in cold weather. Made of flame retardant, heat-resistant (max work temperature: 60℃) heavy-duty PVC sheath, it Protects the safety of you and your family.

🚩【Useful Design】: Constructed with twist lock plug and connector to prevent wire from falling during use. The plug has strain-relief design to reduce stress on the power cord and its connection.

🚩【What you get】: Every package will contain generator extension cord, generator adapter plug, bag and towel, help you organize and clean the cord.

【50 amp Generator extension cord】 Copper generator cord with low resistance and good electrical conductivity, which can prevent the cable from overheating due to long-term use. The outer layer of the generator cable is wrapped by flame-retardant PVC material, which is wear-resistant, heat-resistant, waterproof and durable.

【UL & ETL Certified】 NEMA 14-50P to SS2-50R. Voltage: 125V/250V. Power: 12500W. Temperature Range: -40℉~140℉. ETL certified 50 amp generator power cord, moisture-proof and explosion-proof. The waterproof plug design can protect the generator cord from extreme weather.

【Clamshell Design Power Inlet Box】 Four Pre-Drilled Holes design makes installation more convenient, no need to use extra tools, such as screwdrivers, drills. With unique twist lock design, more stable. With safety indicator light, the green indicator light indicates that it is working normally.

【Generator Interlock Kit】 Compatible with Square D QO or Homeline 150 or 200 amp panels. Use the interlock kit to set the closure of the main breaker and the generator breaker to safely direct generator power to the house. The distance between the main breaker and the generator breaker is 1-3/8".

【Widely Used】 Using the generator cord 50 amp, you can keep the generator away from your house, avoiding the exhaust gas and noise from the generator. Suitable for unexpected power outages and extreme weather, providing stable power delivery to your house. With storage bag and wire lifter, which is portable and easy to store.

【What You Will Get】 1 x 30 ft 50 Amp generator extension cord, 1 x pre-drilled power inlet box, 1 x generator interlock kit, 1 x storage bag, 1 x wire lifter, and accessories as needed. If you have any question, please contact our customer service in time.

Emergency Power Ready: 50 amp generator cord connect 50amp portable generator to house's 50A SS2-50P or CS6375 power inlet box, manual transfer switch, breaker panel; 50 amp generator extension cord providing your family with a safe and reliable power supply during blackouts, storms, hurricanes, floods, or thunderstorms

Reliable Electrical Rating: Male plug is NEMA 14-50P, 50A, 250V, 12500W; Female receptacle plug is NEMA SS 2-50R, 50A, 250V, 12500W with locking threaded ring; 50A generator outdoor extension cord waterproof constructed with heavy duty STW 6/3 + 8/1 AWG generator power cord; 50 amp rv cord all ETL certified

Weatherproof Twist Locking Design: 50 amp RV extension cord female twist locking connector with a threaded ring; This design ensures a secure and weatherproof connection between the adapter and your power inlet box; You can have peace of mind knowing that your power supply will stay intact even in challenging outdoor conditions

Enhanced Safety&Durable: 50 amp rv power cord heavy duty 6/3 + 8/1 Gauge cord inner core made of pure copper and outer jacket is heavy duty flame retardant, UV-resistant polyvinyl plastic sleeve that serves as protection from outdoor weatherproof, wear and tear, ensuring optimal conductivity and reducing the risk of overheating or electrical hazards

Easy to Use and Organize: 25 FT yellow 50amp generator extension cord comes with ergonomic grip handles on the male end for easy plugging and unplugging; RV extension cord 50 amp includes adjustable cord storage straps, making carrying and storing the cord a breeze

GEARit Generator Extension Cord - With multiple length options up to 100 feet, this heavy-duty generator extension cord is the perfect choice for powering your home, vehicle or any essential equipment you need to use when you cannot access the power grid. Oxygen-free copper wire and industrial design ensure clean, consistent operation.

Consistent Power Over Distance - This generator extension cord transfers power up to 30 Amps / 120 Volts / 7500 Watts over premium 100% oxygen-free copper wire, the only option to guarantee clean, strong power when it matters most. Whether it's a short 6.6-foot connection or a long 100-foot run to a distant generator, this extension cord has you covered.

Weather Resistant Design - When using your generator for emergency power, weather is often a major factor. That is why this generator extension cord is ETL listed for weather resistance, so you can keep your home or vehicle running during severe storms and other weather events while keeping your generator at a safe distance to avoid noise and hazardous fumes.

Twist Lock Plug for Secure Connection - When you are powering a home or business, losing power for even a moment can be a huge disruption. This generator extension cord prevents interruptions with a twist lock plug, designed to stay in place even when tugged or struck by storm debris, while remaining ergonomic and easy to remove when intended.

Easy to See in the Dark - The bright green jacket helps this generator extension cord stick out from grass, bushes or other obstructions, even at night or in overcast conditions. In addition to making the extension cord easy to locate, this feature also protects from accidents and tripping, ensuring safety for yourself, your family or customers at your business.

Durable 4-prong, 10-gauge cable with NEMA L14-30P and four 5-20R connectors, supporting up to 30A and 7500W at 125/250 volts.

Built with pure copper and thick gauge wiring to prevent overheating during extended use, ensuring safe operation under high amp loads.

Weather- and fire-resistant with 105℃ PVC and FT-1 fire rating, designed for reliable performance indoors or outdoors in any weather.

Twist-lock plugs provide a secure connection to your generator, preventing disconnects due to wind, rain, or snow—ideal for powering appliances and tools during emergencies.

Powerful – Connect the locking outlet on your generator to the manual transfer switch on your home and extend up to 30 amps of power

Flexible – The cold and heat resistant 25-foot, 10-gauge wire stays flexible in extreme temperatures and is rated for 250-volt use

Weather Resistant – Service grade, abrasion and weather-resistant SJTW insulation

Safe – Extend your power up to 25 feet away, protecting you and others from hazardous generator exhaust

Reliable – Champion Support includes 1-year limited warranty with FREE lifetime technical support from dedicated experts

Specification Features: 12 ft, 4-prong, 30A, SJTW, 125/250V, 3750W/7500W, NEMA L14-30P to L14-30R. Designed to connect generators to transfer switches, providing reliable power during outages or outdoor use

Twist Locking Plug: Twist-lock design ensures a secure connection, preventing disconnections, while the strain-relief and flexibility protect against damage

Weatherproof & Durable: Built to withstand extreme conditions, including rain and temperatures as low as -40°C. Heat-resistant, flame-retardant, and wear-resistant for dependable performance wherever you go

Safety Certified: ETL certified for safety and compliance with recognized industry standards

Flexible & Easy Storage: 12 ft flexible cord with an adjustable organizer for effortless coiling, storage, and easy transport

【75' CORD LENGTH】- Extending the power cord up to 75ft away so as to protect your and others from standing too close to the hazardous exhaust.

【N14-50P & CS6364 】- Plug (Male): 14-50P with handle, elbow plug style for strain-relief; Receptacle (Female): SS2-50R, Locking Style

【DURABLE MATERIAL】- The resistant STW cord is made for heavy duty construction, it is built to the highest quality standards.

【PORTABLE STRAP】- Adjustable power cord organizer which is a carrying strap. It can make the product easy to storage and carry.

【WIDE APPLICATION】- This cord is perfectly suitable for camping, tailgating, outdoor and sporting in spite of hurricane season and other bad weathers.

Power Your Life: The Addlon 15FT generator cord is the perfect length to power portable generators and the house's breaker box. It reduces noise and meets all your electrical needs, making it perfect for Home backup power, RV travel, construction site

Industrial-grade Quality: This 30-amp generator power cord is specifically designed for industrial use and is capable of providing backup power for homes or RVs up to 7,500W. Made of 100% pure copper with high-efficiency performance, it is more durable and safe to use

Robust Weather Resistance: It features anti-frost, waterproof, and wear-resistant properties, and remains flexible and durable even in low temperatures. Additionally, it can withstand extreme heat levels of up to 158°F, making it suitable for all kinds of harsh weather conditions

Long-Lasting Design: The NEMA L14-30P to NEMA L14-30R twist lock connector prevents slipping and ensures the power supply is not abruptly disconnected by an external force during use. The strain relief design has passed over 5000 tests to ensure the plug can bend at any angle without breaking

ETL Listed: We offer a 3-year product support! Our generator extension cords are certified to the high standards of ETL, if you have any questions, our customer support team will also address your concerns within twelve hours

【Powerful Extension Cord】 ISLEWIRE 50FT 30 Amp generator cord 125/250V 7500W is a versatile powerhouse designed for linking portable generators with manual transfer switches to provide power for your home backup power or RV travel.

【Built to Last Quality】 NEMA L14-30P to L14-30R heavy-duty outdoor generator power cord 30 Amp 4 prong, is constructed using solid and flexible materials. It utilizes 100% pure copper conductors for high-efficiency performance, ensuring long-lasting durability and safety to prevent overheating during extended use.

【Exceptional Weather Endurance】ISLEWIRE Green & Black Striped Generator Cable Cord offers exceptional anti-frost, waterproof, and wear-resistant characteristics, maintaining flexibility and durability even in cold temperatures. Furthermore, it can endure extreme heat levels of up to 140°F, ensuring its suitability for various challenging weather conditions.

【Twist Locking Connectors】 The NEMA L14-30 generator cord is equipped with dependable twist lock plugs that prevent cords from coming loose, guaranteeing a continuous power supply without sudden disconnections caused by external forces. The strain relief design reduces stress during connections and allows the plug to flex at various angles, ensuring lasting reliability.

【ETL Listed & Trusted Brand】 4 prong 30 Amp generator cord has passed ETL certification. We stand behind our product with a 3-year replacement and return guarantee, alongside free lifetime technical support. Count on our extension cable to ensure your equipment keeps running even during power outages.