Top 10 Best generator cord 50 amp 4 prong in 2026

Last Updated - 6/22/2026

🏆Best Choice

Nilight

Nilight RV Generator Adapter Cord 30Amp to 50Amp 4 Prong Pure Copper Heavy Duty Twist Lock Male Plug10 Gauge Wire L14-30P to 14-50R 30M/50F for RVs Camper Caravan Van Trailer

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•30 to 50 Amp Adapter: Allows you to connect on the 30 AMP 4 prong female plug on the electric generator, or a 30 AMP external receptacle at RV Park or Campground to a 30 AMP service on your RV, which quickly supplies power for the refrigerator, air conditioner, microwave oven, roaster and other household appliances.This product has been tested at an ETL laboratory and found to meet all applicable Standards for Safety published by relevant NRTLs.
•Electrical Rating: 30 Amp (NEMA L14-30P) male to 50 Amp (NEMA 14-50R) female heavy duty generator adapter cord. Rated for 125V and 3750W . Length 12 Inch. Constructed with 4 of 10 AWG wires to ensure the high electrical conductivity. Male connector is constructed with pressure-proof twist locking design.
•High Performance: Constructed with 100% pure copper with full 10 gauge wires ensuring high conductivity. The wires are stranded copper, it’s very flexible and the STW jacket is very durable.The jacket is coated with a heavy-duty flame retardant, heat resilient PVC sheath that serves as protection from the outdoor elements, wear and tear.
•Weather Resistance: The cord is coated with a heavy-duty flame retardant, heat resilient PVC sheath that serves as protection from the outdoor elements. Protect the wire from wind, rain, snow, soil, and rocks for long-lasting durability. Weather resistant thermoplastic jacket that performs under extreme weather conditions.
•Package includes: 4 prong 30AMP to 50AMP RV generator adapter cord.

View offer on:

$17.99

$22.99

-22%

Check Price

POWGRN

POWGRN NEMA 14-50P to NEMA 14-50R 50 Amp RV/EV Extension Cord 25 FT Outdoor with Grip Handle, Flexible Heavy Duty RV Power Cord Waterproof, 50A 125/250V 6250/12500W STW, Black-Yellow, ETL Listed

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•50AMP RV Extension Cord: NEMA 14-50P Male to NEMA 14-50R Female, 50Amax, 125/250volts, 6250/12500watts, STW, NEMA 14-50 Extension cord suit for Level 2 EV charging such as Tesla Model 3, S, X and Y; Please note to compare the type of plug you need to avoid incompatibility or other accidents
•Weatherproof and Durable: NEMA 14-50P/R RV extension cord jacket is wear-resistant and durable, 50 amp rv cord is IP65 waterproof, weather-resistant, corrosion-resistant, heat-resistant and flame retardant; RV 50 amp extension cord pure copper
•User-friendly Design: RV extension cord 50 amp have Insulated handle, more handle space, so that you can easily plug and unplug without damaging the RV cord, making it safer to use
•Flexible and portable: The 50 amp RV power cord is made of a soft and strong material that can remain flexible at -40°F, not break easily when bent; In addition, a grip storage cord makes the RV electrical cord easier to store
•ETL and NOTE: This RV 50 amp power cord is ETL certified, it is safer to fully deploy the cable in use

View offer on:

$84.99

$111.99

-24%

Check Price

PlugSaf

PlugSaf NEMA 14-50P/14-50R 15 FT 50 Amp RV/EV Extension Cord Outdoor with Grip Handle, 4 Prong Flexible Heavy Duty STW RV Power Cord Waterproof, 50A 125/250V 6250/12500W, Black-Yellow, ETL Listed

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•NEMA 14-50 Extension Cord: 50amp rv extension cord 15 foot, STW, 125V/250V, 6250W/12500W, 50Amax, meeting the power requirements of most RVs/EVs and camping equipment; Male plug NEMA 14-50P, female socket NEMA 14-50R, please ensure that your socket is the correct model; For details on incompatible models, please refer to the image
•Weatherproof & Durable: RV extension cord 50 amp exhibits excellent weather resistance IP65 waterproof, making it suitable for use in various weather conditions, including sunlight, rain, and low temperatures (-40°C); It is constructed with high-quality materials and is heat-resistant, flame-retardant, corrosion-resistant, wear-resistant ensuring safer and more reliable usage for your outdoor RV
•Grip Handle Design: Ergonomic handle designed for easy grip, plug/unplug without damaging the cord, making it safer to use
•Flexible & Easy to Storage: The NEMA 14-50 extension cord 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 and preventing tangling and confusion
•Wide Application: Outdoor RV cord 50 amp is ideal for motorhomes, travel trailers, auto vehicles, and outside campers also suit for Level 2 EV charging such as Tesla Model 3, S, X, and Y

View offer on:

$62.99

$74.99

-16%

Check Price

PlugSaf

PlugSaf NEMA 14-50P/14-50R 50 FT 50 Amp RV/EV Extension Cord Outdoor with Grip Handle, 4 Prong Flexible Heavy Duty STW RV Power Cord Waterproof, 50A 125/250V 6250/12500W, Black-Yellow, ETL Listed

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•NEMA 14-50 Extension Cord: 50amp rv extension cord 50 foot, STW, 125V/250V, 6250W/12500W, 50Amax, meeting the power requirements of most RVs/EVs and camping equipment; Male plug NEMA 14-50P, female socket NEMA 14-50R, please ensure that your socket is the correct model; For details on incompatible models, please refer to the image
•Weatherproof & Durable: RV extension cord 50 amp exhibits excellent weather resistance IP65 waterproof, making it suitable for use in various weather conditions, including sunlight, rain, and low temperatures (-40°C); It is constructed with high-quality materials and is heat-resistant, flame-retardant, corrosion-resistant, wear-resistant ensuring safer and more reliable usage for your outdoor RV
•Grip Handle Design: Ergonomic handle designed for easy grip, plug/unplug without damaging the cord, making it safer to use; Outdoor RV cord 50 amp is ideal for motorhomes, travel trailers, auto vehicles, and outside campers also suit for Level 2 EV charging such as Tesla Model 3, S, X, and Y
•Flexible & Easy to Storage: The NEMA 14-50 extension cord 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 and preventing tangling and confusion
•ETL & Service: RV power cord 50 amp; Your satisfaction is our greatest pursuit, if you may encounter problems during use, you can always communicate with us, and we will solve it in 24 hours

View offer on:

$199.99

Check Price

PlugSaf

PlugSaf 50 Amp Generator Cord, 25FT 50 Amp RV Extension Cord with Twist Lock, Generator Cable 50A 4 Prong Yellow, NEMA 14-50P/SS2-50R Heavy Duty STW Wire for RV Camper & House

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•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 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 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

View offer on:

$124.99

Check Price

PlugSaf

PlugSaf 50FT 30 Amp Generator Extension Cord 4 Prong, NEMA L14-30P/L14-30R 10 Gauge STW 125/250V Twist Lock Generator Cord Heavy Duty, Yellow ETL Listed

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Features & Benefits: 50 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 (-40°C); 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 power cord 50 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 easier and preventing tangles and messes
•ETL and Service: You will get a 4 prong yellow generator cord 30 amp 50ft

View offer on:

$75.99

Check Price

PlugSaf

PlugSaf 50 Amp Generator Cord, 15FT 50 Amp RV Extension Cord with Twist Lock, Generator Cable 50A 4 Prong Green, NEMA 14-50P/SS2-50R Heavy Duty STW Wire for RV Camper & House

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•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 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 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: 15 FT green 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

View offer on:

$82.99

Check Price

VEVOR

VEVOR 15 FT 50 Amp Generator Extension Cord 4 Wire 6 Gauge STW 6/3+8/1, 125V 250V Generator Power Cord N14-50P & SS2-50R with Portable Handle

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•50A Extension Cable: Current: 50AMP, Voltage: 110V, Power: 12500W. This 50A power cord is pure copper wires. It has 6/3+ 8/1 (3 wires at 6 AWG, 1 wire at 8 AWG) cable, which is heavy-duty.
•15FT Power Cord: The 15FT length generator cord is suitable for long-distance operation. Possessing the capacity of STW, this 50 amp generator cord can be used indoors and outdoors in all weather and seasons.
•Sturdy & Reliable Cable: Our cable is rated STW (service grade, thermoplastic, and outdoor rated) to resist wetness and sunlight. Utilize cord in temperatures ranging from -40 °F to 140 °F, so it is flexible enough to be managed.
•Portable Grip & Strap: The ergonomic grip makes it easier for you to plug and unplug. The plastic strap makes the cord neat when not in use. This generator wire is perfect for emergency generator connection to help power the entire home, office, shop, etc.
•Wide Application: This cord enables an easier reach from your generator to your nearest power receptacle or electrical connection. So you can use secure electricity when you are home, working, or outdoor traveling.

View offer on:

$61.90

$67.99

-9%

Check Price

Cable Matters

Cable Matters 4 Prong Replacement 50 AMP RV Power Cord - 25ft, 6/8 AWG, Generator Extension Cord, Compatible with Tesla Charger/EV Charger / J1772 Charger (NEMA 14-50P to 4 Wire)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•50 amp replacement cord with 4 wire pigtail provides a new power connection for the damaged cord of a 50 amp style RV or Fifth Wheel; Re-wire your RV power cord to connect a 50A RV travel trailer cord to a 50A campsite power pedestal or a 50A 14-50R receptacle on an RV ready generator
•Outdoor rated RV power cable has a STW rating with 6 + 8 AWG copper conductors; Weather-resistant 50amp RV electrical cord is engineered with a 600V rated thermoplastic STW cable jacket to prevent overheating
•Heavy-duty 6/8 GAUGE RV CORD is rated for 50 amps and up to 250 volts to support up to 12500 watts; Safer unplugging with an easy-grip power plug on this replacement RV electric 50 amp power cord
•Rugged & safe 4 prong 50 Amp RV Cord with a NEMA 14-50P power plug and un-terminated insulated wires; Color-coded wires with Black/Red - Hot, Green - Ground and White - Neutral make the installation simpler and safer
•Lifetime warranty and product support provides peace of mind when purchasing this RV power cord 50 Amp replacement for camp power

View offer on:

$133.99

Check Price

UEAKPIC

UEAKPIC 50 Amp Generator Cord and Pre-Drilled Inlet Box Kit, 25ft Generator Cable Extension 50A 4 Prong NEMA 14-50P to SS2-50R with Twist Lock, Heavy Duty STW Wire for RV Camper & House, ETL Listed

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Power your House: When you encounter power outages, you can take full advantage of your generator with this generator cord: a.Plug the NEMA 14-50P end to your generator output. b.Connect the twist lock SS2-50R end to the power inlet box SS2-50P end
•Multifunctional Power Cord: 4-pronged all rubber transfer switch extension cord. For general indoor and outdoor use and is compliant with portable AC units and emergency electrical needs and other power connection purposes
•ETL & UL Certification: 125/250V, 12500W, 50Amp generator inlet box with SS2-50P inlet generator plug, suitable for all NEMA SS2-50R generator cord. Pre-drilling design of inlet box is easy removal and replacement of wiring caps
•Water & Rust Proof: The whole body of inlet box is covered with anti-rust coating, with powerful features such as rain and rust! In addition, it adopts a flip design with weatherproofing foam inside, which is dedicated to preventing dust and humid air
•Green Safety Light: There is a green warning light on the inlet box flip cover, which will be lit when the power connection is successful. This can clearly observe the working state of the plug, especially at night and in dark areas
•Support: The performance, material, life, safety and other aspects of the generator cord and inlet box have conducted multiple optimizations and upgrades by our professional engineers. If you have any questions, please feel free to contact us

View offer on:

$125.99

Check Price

📊

📈 How we rank

With our cutting-edge technology, we examine thousands of products and retailers, assessing reviews, ratings, trends, and sales rankings to identify what matters most to users like you.

Our team evaluates this data alongside genuine user feedback, merging AI analysis with human insights to provide you with real-time, highly-rated recommendations that empower your decision-making with clarity and confidence.