The 11 best generator cords for transfer switch of 2025

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

Heavy Duty 50 Amp Generator Cord: RVINGPRO 50 amp generator cord is made of 100% copper conductor with flame retardant coating and PVC jacket. Length:20 FT; Voltage: 125V/250V; Wire Gauge: STW 6/3 + 8/1 AWG; Male Plug: NEMA 14-50P; Female Plug: NEMA SS2-50R, Twist Locking Connector; Max Wattage: 12,500 Watts.

Pre-Drilled 50 Amp Generator Inlet Box: RVINGPRO NEMA SS2-50P 50 amp inlet box for generator is designed with 4 pre-drilled holes distributing in 4 directions (left, right, bottom and rear), which allows direct connection to switches and electrical panels from multiple directions. NO Hassle Drilling Needed. You can easily open the hole with your fingers within only 30s.

ETL Listed: Both of RVINGPRO 50 amp generator cord and power inlet box have passed ETL certification, which are safe enough for outdoor use. Our generator to house hookup kit can work well in various terrible weather conditions, no matter hurricanes or snowstorm, ensuring a stable and continuous power supply for power outage emergency.

Use with Ease: The twist locking ring on the female plug of the 50-amp generator cord helps to keep dust and rain out of plug connection while the ergonomic finger grip on the male plug makes it easier for you to plug and unplug. Besides, there is a green indicator light on the cap of the generator inlet box, which is easy for you to tell when the power is on.

What You’ll Get: 1 x 50 Amp Generator Cord (20FT) + 1 x 50 Amp Generator Inlet Box (Pre-Drilled) + 1 x 50A Adapter Plug + 1 x Cable Tie + 1 x Storage Bag. Besides, we offer 90 days no reason to return service. If you have any problems during using our product, welcome to reach to us, there is professional customer service waiting to help solve your problems.

Warm Tips: You may receive the items without the adapter in due to different production batch, please contact us asap once you found there is no adapter in the box.

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.

Heavy Duty 30 Amp Generator Cord: RVINGPRO 30 amp generator cord is made of 100% copper conductor with flame retardant coating and PVC jacket. Length: 15FT; Voltage: 125V/250V; Wire Gauge: 10/4 SJTW; Male Plug: NEMA 14-30P; Female Plug: NEMA L14-30R, Twist Locking Connector; Max Wattage: 7,500 Watts.

Pre-Drilled 30 Amp Generator Inlet Box: RVINGPRO NEMA L14-30P 30 amp inlet box for generator is designed with 4 pre-drilled holes distributing in 4 directions (left, right, bottom and rear), which allows direct connection to switches and electrical panels from multiple directions. NO Hassle Drilling Needed. You can easily open the hole with your fingers within only 30s.

ETL Listed: Both of RVINGPRO 30 amp generator cord and power inlet box have passed ETL certification, which are safe enough for outdoor use. Our generator to house hookup kit can work well in various terrible weather conditions, no matter hurricanes or snowstorm, ensuring a stable and continuous power supply for power outage emergency.

Use with Ease: There is a weatherproof seal cap on the inlet box which closes when not in use, protecting the inlet from rain and dust Besides, there is a green indicator light on the cap of the 30 amp generator inlet box, which is easy for you to tell when the power is on.

What You’ll Get: 1 x 30 Amp Generator Cord (15FT) + 1 x 30 Amp Generator Inlet Box (Pre-Drilled) + 1 x Cable Tie + 1 x Storage Bag. Besides, we offer 90 days no reason to return service. If you have any problems during using our product, welcome to reach out to us, there is professional customer service waiting to help solve your problems.

Power Your Life: The Addlon 50FT 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

Generator Transfer Switch Adapter Cord: our 10FT power adapter cord comes with NEMA TT-30P plug and L14-30R lock female receptacle to ensure secure and reliable connections; Nice for the generator which is without an L14-30R receptacle to the house from TT-30R outlet on the generator; TT-30P to L14-30R support max 30 Amp overload, 250V, max 3750 watts

TT-30P Male Plug: this is a 3 prong male plug compatible with NEMA TT-30R and has a capacity of 30 Amps; 30 Amp TT-30R plug for RV camper trailer with grip handle, easy to push and pull; A must if your power generator is without an L14-30R receptacle; Nice for the generator to the house from TT-30R outlet on the generator; Easy to use, no assembly required

L14-30R Female Connector: this is a 4 prong female connector that can be locked securely into place at the generator end, designed for L14-30 plugs; The strain relief structure makes the adapter cord be able to lock in for safety and reduce loose that avoid abrupt power disconnection; It is most frequently utilized with generators

Cable Built to Last: this 30 Amp 3 prong to 4 prong generator plug adapter cord boasts a molded plug, copper wiring coating, flame retardant and UV resistant materials to ensure the durability, and the 3 conductor 10 AWG construction, plus an indoor or outdoor waterproof jacket, can effectively avoid surface oxidation, making it an ideal choice for outdoor usage

Enhanced Safety with Easy to Find Yellow Design: our 30 amp generator transfer switch adapter cord is well designed in the yellow color, bright and noticeable, so you don't have to worry about searching for your charging equipment in the dark, helping to reduce the risk of accidents in dimly lit spaces like garages, gardens and more, allowing you to stay safe and enjoy peace of mind during the charging process

ALL-WEATHER INDOOR/OUTDOOR USE: .65" outside diameter cord, 10 gauge/4-conductor, 30 amp, 4-pronged all rubber transfer switch extension cord. Rated for general indoor and outdoor use and is compliant with cradle mounts, portable AC units, air compressors, electric vehicle charges, and emergency electrical needs during power outages and other power connection purposes. Please note that this cord becomes less malleable in colder weather.

EXCELLENT PLIABILITY: Pliable, flexible all rubber cord gives you a clean current in subzero weather conditions. This 30amp generator cord works tremendously for carrying a sustained load without overheating or becoming stiff. It is weather, water, and oil resistant, and may be used for extended periods of time year-round. A useful and reliable emergency generator power cord that has excellent flexibility straight out of the box.

TWIST AND LOCK MECHANISM: SJTW L14-30 locking power cords with 125-250 voltage. The locking plugs have the pins arranged in a circular manner. The plug is inserted and twisted to lock in place. This l14-30 generator cord can be used to run any circuit in your breaker panel up to 30A. It is an ideal cable for running an emergency generator to your wall outlet.

FOR HIGHER AMP LOADS: This generator cord 30 amp 4 prong has larger gauge wiring that is well built to give you peace of mind when running higher amp loads. The yellow rubber is accented by black molded ends that give high visibility. The cord rolls out cleanly and easily recoils when not in use, so storage is never a bother.

SPICE UP YOUR BACKYARD: Our 4 prong generator cord will give you the opportunity to have the ultimate backyard set-up without the hassle. Add some accessories around your patio while using our nema 14-30 extension cord as a handy helper to get the job done.

【Generator Transfer Switch Adapter】3-Prong NEMA TT-30P male to NEMA L14-30R female, 120V RV generator to 120V generator power adapter; Supports up to 30 amps overload, 125V, 3750 watts max, 10 feet, ETL certified

【TT-30P Male Plug】30 amp generator RV plug, 125 volt, 3-prong straight blade TT-30P male plug commonly used in RV campgrounds, garages, and generators; suitable for connecting the generator to the house from the TT-30R receptacle on the generator

【L14-30R Female Connector】30 amp, 125/250 volt, L14-30R 4-prong locking female connector; Strain relief construction allows adapter wires to lock in place for safety and to minimize looseness to avoid sudden power outages; the female end is often used to connect a 30amp L14-30P PB30 inlet box to provide temporary power to a house

【Heavy Duty Cord】STW 10AWG/3C, made with molded plugs, pure copper wire, flame retardant and UV resistant materials for durability

【Multi-Purpose】Suplevel 30 amp to 30 amp adapter is a must-have accessory for connecting a generator transfer panel switch to power an RV or portable distribution box

【What You Get】10ft NEMA TT-30P to L14-30R adapter cord, our friendly customer support and 24 month warranty

Generator Transfer Switch Adapter Cord: our 20FT power adapter cord comes with NEMA L5-30P plug and L14-30R lock female receptacle to ensure secure and reliable connections; Nice for the generator which is without an L14-30R receptacle to the house from L5-30R outlet on the generator; L5-30P to L14-30R support max 30 Amp overload, 250V, max 3750 watts

L5-30P Male Plug: this is a 3 prong male plug that can be locked securely into place at the generator end, designed for L5-30 outlets; A must if your power generator is without an L14-30R receptacle; Nice for the generator to the house from L5-30R outlet on the generator; Easy to use, no assembly required

L14-30R Female Connector: this is a 4 prong female connector that can be locked securely into place at the generator end, designed for L14-30 plugs; The strain relief structure makes the adapter cord be able to lock in for safety and reduce loose that avoid abrupt power disconnection; It is most frequently utilized with generators

Cable Built to Last: designed with durability in mind, our L5-30P to L14-30R generator transfer switch adapter cord boasts a molded plug, copper wiring coating, flame retardant and UV resistant materials; Its 3 conductor (10AWG/3C) construction, coupled with an indoor or outdoor water resistant jacket, effectively prevents surface oxidation; This durability ensures longevity and reliability, offering you peace of mind regarding the set's performance and safety

Enhanced Visibility: the bright yellow color of the 30 amp L5-30P to L14-30R generator transfer switch adapter cord enhances its visibility, making it easily noticeable even in low light or cluttered environments; This feature adds an element of safety and convenience, allowing you to locate and connect the adapter with ease, especially in dimly lit or crowded charging areas

UL & ETL Listed: UL certified for the generator cord and ETL certified for the box. Safe and Reliable.

50 Amp Generator Cord: Length: 25 FT. 50 Amp NEMA 14-50P Male to NEMA SS2-50R Female. 125/250-Volts, STW 6/3 + 8/1 AWG, Maximum Wattage: 12,500 Watts.

Pre-drilled SS2-50P Generator Power Inlet Box: 50 Amp, 125/250 V, 12500 W, NEMA SS2-50P twist-lock style power generator inlet box. The best partner for the generator to the house power cord. Easy to open with removable knockouts.

Emergency Ready: This generator extension cord with inlet box provides a safe and convenient way to connect your generator to the manual transfer switch on your house, providing the power you need in bad weather like hurricanes, storms. Also for house building.

Heavy Duty: Pure copper wiring coated with a heavy duty flame retardant, heat resistant, UV resistant PVC, provides protection from rain, wind, snow, soil, and rocks for emergency ready.

HEAVY DUTY & DURABLE MATERIALS - 50AMP (NEMA 14-50P) male to 30AMP (NEMA L14-30R) female 4 prongs twist lock | STW indoor/outdoor water resistant jacket | ETL listed

SUPERIOR SPECIFICATIONS - 125 Volts and 3750 Watts | 10AWG American Gauge Wire | 100% copper wiring | 3 conductors

ERGO GRIP PLUG - Male (NEMA 14-50P) power adapter is designed with ergonomic handle grip to safely plug and unplug connector

90 DEGREE BEND RELIEVE - Maintain flexibility and reduce pressure on the cord

LIMITED LIFETIME REPLACEMENT + 30-DAY, 100% MONEY-BACK - We are committed to our customers' satisfaction, which is why we offer a Limited Lifetime Replacement and a 30-Day, 100% Money-Back. If you're not completely satisfied, simply contact us directly, within 30 days of purchase, for support!