Top 10 Best generator extension cord 30 amp 4 prong in 2026

Last Updated - 6/26/2026

🏆Best Choice

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

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

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

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$75.99

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Kohree

Kohree 30 Amp Generator Extension Cord 4 Prong 20FT, Nema L14-30P/L14-30R Generator Cord, 125/250V 7500W 10 Gauge Heavy Duty Generator Power Locking Cord for Manual Transfer Switch, Power Outage 20FT

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•【Weatherproof Generator Power Cord】Designed with a twist lock male plug, it still could be connected securely even facing hurricane, heavy rain, heavy snow.
•【Generator Twist Lock Cord】Heavy duty generator power locking cord designed with L14-30 twist lock connector to avoid cord slipping from holster & lock tightly for security use.
•【 High Quality & ETL Listed 】30 Amp Generator power cord 4 prong made of 100% copper wire coated with a heavy duty flame retardant, heat resistant PVC sheath & water resistant molded plug.
•【High Conductivity Generator cord 】10 gauge cable 30A 125/250V up to 7500W with a greater conductivity, and will avoid getting overheating from long time use, a useful and reliable emergency electric extension cord for your generator.
•【20FT Portable Generator Cord】Comes with a cable organizer for you to storage the cable flexible & effrctively, and you could extend it up to 20ft away to protect yourself & others from standing too close to the hazardous exhaust.

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$44.99

$49.99

-10%

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PlugSaf

PlugSaf 25FT 30 Amp Generator Extension Cord 4 Prong, NEMA L14-30P/L14-30R 10 Gauge STW 125/250V Twist Lock Generator Cord Heavy Duty, Black ETL Listed

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Features & Benefits: 25 foot 4 prong generator extension cord 30amp; STW 125/250v; 3750w/7500w; NEMA L14-30P to L14-30R; 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 25 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
•Wide Application: Ideal for connecting portable generator to manual transfer switch, house and outdoor RV use

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$56.99

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RVGUARD

RVGUARD 4 Prong 30 Amp 25 Foot Generator Extension Cord, NEMA L14-30P/L14-30R, 125/250V Up to 7500W 10 Gauge SJTW Generator Cord with Cord Organizer, ETL Listed

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Quality Cable – NEMA L14-30P to L14-30R SJTW 10 Gauge 4 Prong 25FT generator extension cord 125/250V. Deliver power from your generator to your end-use device.
•Twist Lock Design – Twist lock plug avoids cord falling off. The strain relief structure makes the cord not easy to pull out.
•Weather Resistant – All-weather resistant jacket remains flexible and will not crack or deform in temperatures from 221 ℉ to -40 ℉. Specifically designed for extreme weather conditions.
•Heavy Duty – Big gauge and pure copper to avoid the cable getting overheated from long-time use. Long enough to keep your generator in a safe place while running.
•Storage – Colorful storage bag and cord organizer with carrying handle keep power cord neatly for storage.

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$47.99

$63.99

-25%

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POWGRN

POWGRN 30-Amp Generator Extension Cord (35 Feet) 4-Prong 125/250V 7500W, NEMA L14-30P/L14-30R,10 Gauge STW Locking Power Cord for Transfer Switch, Portable Generators,Yellow 35ft Generator Cable

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Can be Used in Any Ccenario: This heavy duty generator extension cord with multiple length options up to 75 feet; in case of power outages or emergencies; you can use the power cord to connect a portable generator and manual transfer switch to power houses; rvs and other outdoor camping equipment
•Weatherproof and Durable: Generator extension cable is etl certified with 30 amp 4 prong heavy duty generator cable; stw 125/250v; NEMA L14-30P to L14-30R; with excellent weather resistance and IP65 waterproof rating; it is suitable for use in all weather conditions; including sunlight; rain; and low temperatures (-40°C); it is heat-resistant; flame-retardant; corrosion-resistant and abrasion-resistant to ensure more safety and reliability
•Twist-lock Design & Stable Power Supply: The twist-lock plug prevents the cord from coming off due to external force in all kinds of harsh weather conditions; preventing power interruption; the plug and receptacle are designed for easy gripping and clamping; ensuring that the plug can be bent at any angle without breaking
•Matching Cord Organizer & Easy Storage: L14-30 generator power cord 35ft sheath is made of sturdy and flexible material; easy to bend and store; and can adapt to different layouts and environments in addition; an adjustable cord organizer is included to neatly coil and hang the cord; making storage and transportation easier and preventing tangles and confusion
•ETL Certification and Quality Assurance: We will check each product before shipment; your satisfaction is our utmost pursuit

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$51.99

$63.99

-19%

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GEARit

GEARit 30-Amp Generator Extension Cord, 120/250-Volt, 4-Prong, 7500W, NEMA L14-30P/L L14-30R, 10 Gauge SJTW Locking Power Cord for Manual Transfer Switch, Portable Generator Power Outage, 10 Ft, Green

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•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.

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$29.99

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PlugSaf

PlugSaf 40FT 30 Amp Generator Extension Cord 4 Prong, NEMA L14-30P/L14-30R 10 Gauge STW 125/250V Twist Lock Generator Cord Heavy Duty, Green ETL Listed

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Features & Benefits: 40 foot 4 prong generator extension cord 30amp; STW 125/250v; 3750w/7500w; NEMA L14-30P to L14-30R; 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 40 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
•Wide Application: Ideal for connecting portable generator to manual transfer switch; house and outdoor RV use

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$44.99

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POWGRN

POWGRN 20 FT 30 Amp Generator Extension Cord 4 Prong, Heavy Duty NEMA L14-30P to NEMA L14-30R, 125/250V 7500W, Green 10 Gauge STW Twist Locking House Power Cord, 20 Feet Generator Cable

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Can be Used in Any Ccenario: This heavy duty generator extension cord with multiple length options up to 100 feet; in case of power outages or emergencies; you can use the power cord to connect a portable generator and manual transfer switch to power houses; rvs and other outdoor camping equipment
•Weatherproof and Durable: Generator extension cable is etl certified with 30 amp 4 prong heavy duty generator cable; stw 125/250v; NEMA L14-30P to L14-30R; with excellent weather resistance and IP65 waterproof rating; it is suitable for use in all weather conditions; including sunlight; rain; and low temperatures (-40°C); it is heat-resistant; flame-retardant; corrosion-resistant and abrasion-resistant to ensure more safety and reliability
•Twist-lock Design & Stable Power Supply: The twist-lock plug prevents the cord from coming off due to external force in all kinds of harsh weather conditions; preventing power interruption; the plug and receptacle are designed for easy gripping and clamping; ensuring that the plug can be bent at any angle without breaking
•Matching Cord Organizer & Easy Storage: L14-30 generator power cord 20ft sheath is made of sturdy and flexible material; easy to bend and store; and can adapt to different layouts and environments in addition; an adjustable cord organizer is included to neatly coil and hang the cord; making storage and transportation easier and preventing tangles and confusion
•ETL Certification and Quality Assurance: We will check each product before shipment; your satisfaction is our utmost pursuit

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$39.99

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PlugSaf

PlugSaf 25FT 30 Amp Generator Extension Cord 4 Prong, NEMA L14-30P/L14-30R 10 Gauge STW 125/250V Twist Lock Generator Cord Heavy Duty, Green ETL Listed

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Features & Benefits: 25 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 25 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 green generator cord 30 amp 25ft; your satisfaction is our greatest pursuit; if you encounter problems in the process of use; you can touch us at any time; we will solve the problem for you within 24 hours

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$40.99

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MaxWorks

MaxWorks 80841 25 Ft. Heavy Duty 4-Prong Twist Lock 125V/250V 30 Amp L14-30P (Male) L14-30R (Female) Generator Extension Cord

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Constructed from commercial grade 10 gauge all copper wires with 4-prong 30 amp molded twist lock plug to prevent accidental disconnect or slippage and allows you to fully utilize your generator’s output capability
•Features 4-prong 125V/250V NEMA L14-30P to L14-30R will handle up to 7500 watts for use on generators and other portable device and equipment
•Designed to provide connecting link between your generator and manual transfer switches, transfer panel or/and power inlet boxes. Male plug connects to generator and female receptacle to transfer switch/power inlet box. 4-prong twist for safer and tighter connection
•ETL/CETL listed for use with outdoor appliances

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$35.05

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