The 11 best generator extension cords 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.

🛡️ Heavy-duty 4-prong 10-gauge cable with NEMA L14-30P/Four 5-20R connectors, capable of handling up to 30A and 7500 watts of power at 125/250 volts.

🛡️ Made with pure copper and larger gauge wiring to prevent overheating during long-term use, giving you peace of mind when running higher amp loads.

🛡️ Weather and fire-resistant design with 105℃ PVC and FT-1 level fire resistance, suitable for indoor and outdoor use in all weather conditions.

🛡️ Twist-locking plugs for secure connection to your generator, preventing slipping due to wind, rain, or snow. Perfect for connecting home appliances and electric power tools during emergencies.

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

50-Foot 10-Gauge (10/3) Multi-Outlet Extension Cord with Ground – Waterproof and Weatherproof

Heavy-duty UL-certified power cords made from thermoplastic, suitable for temperatures from -40°F to 130°F. Double-jacketed to protect walls and floors while standing up to rough surfaces like concrete.

Made with 10-gauge soft-drawn copper, providing 125V at 15 amps with minimal voltage drop for reliable power.

S7 cords reinforced with poly strands for durability, designed for heavy-duty, daily use.

Compatible with Champion Power Equipment and other generators with universal sockets.

Useful : This Heavy Duty extension cable converts a 30-amp locking outlet to four 20-amp household outlets

Powerful : 4x10 Gauge Bare Copper Conductor cable can run the max wattage of 7500 watts, power of 30 Amp 125/250 volts, a good generator adapter for emergency using.

Weather/Water/Flame Resistant : SJTW insulation perfect for indoor/outdoor use, the included Dust Covers to keep your outlets clean when not in use

Flexible : Cold and heat resistant, stays flexible in extreme hot and cold weather conditions.

1 Year Quality Guarantee and 3 Years Customer Service, if you have any questions, please feel free to contact us, we will get back to 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

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

PREMIUM POWER - Satisfy all of your home, office or jobsite power needed with the 100ft extension cord! This outdoor extension cord provides enough ample reach for any application where power isrequired!

FLEXIBLE & EASY TO BEND - The heavy extension cords are UL Listed! Our weather resistant, heavy duty extension cords are easy to use. This outdoor extension cord is made with durable materials that withstand rugged use!

POWER RATING AND APPLICATION: 3 Prong black extension cord 100 Feet 16AWG SJTW power outside extension cord rating 13Amps 125V 1625Watts. Flame resistant, Waterproof Weather resistant, Cold-resistant (-50°C), corrosion resistant Suitable for indoor and outdoor, home office use extension cable.

SAFETY & RELIABLE: Durable 100% copper 3-prong construction and insulation layer on the wire that helps the extension cord be more efficient and keeps it from heating up and causing fire damage. The long strain relief design passed 5000+ repeated tests to ensure the extension cord bends at a greater angle without breaking to keep long-term durability.

What You Get: 100 ft extension cord and velcro strips ( Easy to store when you don't use it ). 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

RELIABLE POWER: 50-foot heavy-duty indoor/outdoor extension cord rated 13 Amps, 1625 Watts and 125 VAC

DURABLE: Grounded 16-gauge vinyl covered extension cord with 3-prong plug and insulated conductors

HEAVY-DUTY: All copper wire construction power cord; vinyl covering protects against moisture, abrasion, and direct sunlight

VERSATILE: Indoor/outdoor extension cord ideal for home, yard or professional use; power tools, landscaping equipment, lighting and more

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