The 11 best extension cords for generators of 2025

【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.

【25Ft 30 Amp Generator Cord】 NEMA L14-30P to L14-30R 4×10 Gauge 4 pin generator extension cord 125/250 volt. Ficstar generator extension cord are ETL certificated

【Heavy Duty】Ficstar 4 wire cable made from pure copper. The cord ensures optimal conductivity, delivering safe and reliable power from your generator to devices without risk of overheating during extended use

【Weatherproof】Built to withstand extreme weather conditions, including rain, snow, and high heat, for reliable outdoor use. Works in temperatures from -40°F up to +221°F

【Easy to Carry】Ficstar extension cord with carry handle is easy to transport and store, making it perfect for outdoor activities or emergency use

【Twist Lock Design】The twist-lock plug ensures the 4 wire cable stays firmly in place and resists accidental unplugging

Ceptics Advantage: Reliable and heavy-duty extension cord with industry leading lifetime limited warranty

Input: NEMA L14-30P 30-amp| Output: 4x 5-15/20R 20-amp | 125/250V

4 -Prong adapter plug converts a 30A locking receptacle on a generator to four 20-amp household outlets. Outdoor rated & Heavy duty - 10 AWG & 10/4 STW - Flexible and weather-resistant for all purpose use

Length: 21 Feet | Maximum Wattage Capacity: 7500W @ 250V or 3750W @ 125V

All Ceptics generator power cords and adapters are designed and tested with safety in mind

NEW DESIGN FLAT CABLE:This is a new design of the flat cable,easy to go through the door or window gap.4 prong cable,NEMA L4-30P/Four 5-20R

4 prong 10 gauge flat cable run the max wattage of 7500 watts,power of 30 Amp 125/250 volts

HEAVY DUTY The big gauge and pure copper can avoid the cable getting overheating from long -time use.Larger gauge wiring is well built to give you peace of mind when running higher amp loads. This cord can be used to run any circuit in your breaker panel up to 30A.It is a useful and reliable emergency extension cord for your generator.

WEATHER AND FIRE RESISTANCE This generator cable can be used indoor/outdoor for all weather and all season.We choose the good quality of 105℃ PVC with the FT-1 level fire resistance.And pure copper(5.26mm²) which will not let the cable get heat during the operation time.

1 YEAR QUALITY GUARANTEE AND 3 YEAR CUSTOMER SERVICE If you found any problem of our cable pls email us,we will feedback you in 24 hours.

Up to 1875W Applications: Outdoor extension cord waterproof 50ft 12 gauge, 15 amp, 125 volts, 1875watts, male power plug NEMA 5-15P, female power socket NEMA 5-15R, SJTW power cord, ETL/cETL listed, heavy duty extension cord 50 ft is perfect for any heavy duty use: circular saws, string lights, block heater, lawn mowers, gardening, landscaping, construction site, welding work, or powering major appliances

Lighted End & Safe to Use: LED indicator lights up when 50 ft extension cord outdoor powered; bright PVC jacket color makes this waterproof extension cord for outside easily visible outdoor and indoor; avoid tripping in dark work environment; Each outdoor extension cord 50 ft waterproof 12/3 passed 1500V high voltage test to keep your appliance in safe

Weather-proof & Flexible: Extension cords jacket is wear-resistant and durable; 3 prong 50 foot extension cord outdoor is IP65 waterproof, weather-resistant, heat-resistant (158°F), corrosion-resistant, flexible vinyl indoor 50ft extension cord will keep flexible at -58°F and easy re-pack after using

Hook & Strain Relief Design: 50 ft outdoor extension cord relief design, which is not easy to break when bent and used. The socket has a hook design, which is easy to plug and unplug and can be hung in a humid environment, making 12 gauge extension cord safer to use

Reliability: Package contains extension cord 50 ft outdoor and storage straps; friendly and reliable customer service will respond to you within 24 hours

Lighted End and Extra Size for Safety: The power socket indicator light shows that power is on and the heavy duty extension cord 100 ft is ready for work; Extra size male NEMA 5-15P power plug and female NEMA 5-15R power socket for safety; It is thicker and more durable than the normal type on market and has high insulation safety performance to prevent electric shock; ETL/cETL Listed for safe approval

Many Application Power Cord Extension: 3 prong grounded outlet 12 AWG extension cord 100 foot; The PVC outer jacket is flame-resistant, waterproof, weather-resistant, cold-resistant -50°C, corrosion-resistant suitable for indoor and outdoor, home office use, and industrial extension cord; The shiny yellow color for easy visibility provides extra safety and avoids tripping while working

High Flexible & Easy to Use: HUANCHAIN high flexible vinyl extension cable cords have better bending resistance and prevent them from breaking during long-term movement, bending, and pulling; Super soft feel; Easy to unfold when used; Each cord has storage straps packing and is easy to repack and recycle after use; Open the storage straps when power is on and unfold the 12 gauge outdoor extension cord 100 ft more safe

Hook & Strain Relief Design: The plug and socket end have a strain relief design; Which is not easy to break when bent and used; The socket has a hook design; Which is easy to plug and unplug and can be hung in a humid environment; Making it safer to use

What You Get: The outdoor 12/3 extension cord 100 ft; 15amp, 125v, 1875watts rated; Friendly and reliable customer service will respond to you within 24 hours

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; 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

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 50ft 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; if you encounter problems in the process of use; you can reach us at any time; we will solve the problem for you within 24 hours

HEAVY DUTY GENERECTOR EXTENSION CORD Cords 4x10 SJTW gauge cable can run the max wattage of 7500 watts,power of 30 Amp 125/250 volts,a good generator adapter for emergency using.

SURGE PROTECTOR BREAKER Will not burn your device,and keep your appliance safe with overvoltage protector breaker.

HEAVY DUTY The big gauge and pure copper can avoid the cable getting overheating from long -time use.Larger gauge wiring is well built to give you peace of mind when running higher amp loads. This cord can be used to run any circuit in your breaker panel up to 31A.It is a useful and reliable emergency extension cord for your generator.

WEATHER AND FIRE RESISTANCE This generator cable can be used indoor/outdoor for all weather and all season.We choose the good quality of 105℃ PVC with the FT-1 level fire resistance.And pure copper(5.27mm²) which will not let the cable get heat during the operation time.

1 YEAR QUALITY GUARANTEE AND 3 YEAR CUSTOMER SERVICE If you found any problem of our cable pls email us,we will feedback you in 24 hours.

50 foot 12 - gauge cord - heavy duty, circuit breaker protection - reduces appliance damage from voltage drop

Input: l14-30p 30A 125/250 locking plug

Output: 4 x 5-15r/5-20r 15/20A (standard wall outlets)

Versatile design - fits all generators with a 30-amp outlet (nema l14-30)

Maximum wattage capacity: 7500 watt, 5 year limited warranty

【Generator Distribution Adapter 】NEMA L14-30P to 4 Ports 5-15R 5-20R and 1 Port L14-30R Adapter Plug, using your generator to power up multiple devices

【Male Plug】NEMA L14-30P 30 Amp120/ 240V Locking Plug Fit into the Genertor power inlet with L14-30 Outlet

【Female Receptacle】Four 20 amp NEMA 5-15R/5-20R & one 30 amp NEMA L14-30R, max wattage 7500 watts

【Safery and Durability】L14-30 Twist Locking Plug for security, Pure copper wiring coated with a Heavy Duty flame retardant, heat resistant, UV resistant PVC , Suitable for various harsh environments, ETL-listed

【Widely Application】 This L14-30P Convert Plug is suit for distributing power for flood restoration and bed bug treatments. Great for use in EV Charging, generators, industrial work-sites, and construction sites