The 13 best power inlet box cords for generators of 2025

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: 25FT; 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 (25FT) + 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.

Emergency Power: In the event of power outages or residing in regions with inconsistent electricity supply, the utilization of this kit in conjunction with a generator can confer emergency backup power solutions for residential households.

ETL Listed: Both of our generator cord and inlet box have ETL/cETL certified, providing a higher level of safety for your home.

30 Amp Generator Cord: 15 Foot, L14-30P to L14-30R generator extension cord, 125/250V 3750/7500W heavy duty STW cord.

30 Amp Power Inlet Box: L14-30 generator plug, 125/250V 3750/7500W power inlet box, capable of satisfying a broad range of electrical demands.

Pre Knock out: The wiring holes can be effortlessly detached and reattached without the need for specialized tools, negating any concerns of inadvertent product damage caused by drilling.

Superior Durability: The power cord is fabricated using weather-resistant 10/3 gauge STW jacket material, while the box is constructed from steel and coated with anti-corrosive powder for added durability.

Emergency Power: In the event of power outages or residing in regions with inconsistent electricity supply, the utilization of this kit in conjunction with a generator can confer emergency backup power solutions for residential households.

Pre Knock out: The wiring holes can be effortlessly detached and reattached without the need for specialized tools, negating any concerns of inadvertent product damage caused by drilling.

50 Amp Generator Cord: 15 Foot, 14-50P to SS2-50R generator extension cord, 125/250V 6750/12500W heavy duty STW cord.

50 Amp Power Inlet Box: SS2-50 generator plug, 125/250V 6750/12500W power inlet box, capable of satisfying a broad range of electrical demands.

Superior Durability: The power cord is fabricated using weather-resistant 6/3+8/1 gauge STW jacket material, while the box is constructed from steel and coated with anti-corrosive powder for added durability.

Premium 50A Generator Cord: Our generator cord is STW gauge with 6/3+8/1 AWG Cord, supporting up to 50 AMP current. Featuring a NEMA 14-50P male plug designed to fit into a 50A generator output and a twist-lock NEMA SS2-50R female plug for a secure connection to a 50A power inlet box with a NEMA SS2-50P male end. Perfect for emergency power needs in any weather!

ETL Certified Reliability: Ensure ultimate security and durability with our ETL-certified generator cord and power inlet box, designed to withstand tough conditions. This 25-foot heavy-duty generator cord is crafted from pure copper wiring and encased in flame-retardant PVC that resists heat and UV damage. It protects against rain, wind, snow, soil, and rocks, even when used outdoors for long periods.

Flip Cover Power Inlet Box: Featuring a pre-drilled hole design with detachable plug, this power inlet box simplifies installation without additional tools. Its entire casing is coated with a rust-resistant layer, providing robust protection against wind, rain, and dust. The clear indicator light on the flip cover illuminates when the power is successfully connected, allowing for easy visibility at any time of day or night.

Twist-Lock Design: Our generator cord features a thoughtfully designed handle on the male plug, making it effortless to connect and disconnect while reducing the risk of damage from forceful interactions. The female end boasts a robust twist-lock mechanism that securely locks the plug into place with a simple twist. It ensures a stable, slip-free connection and shields the interior from dust and water intrusion.

Ideal for Outdoor Power Needs: Experience uninterrupted power supply to your home or RV with our 50A generator cord and power inlet box kit, even during power outages and severe weather conditions. It includes a carrying strap and a storage bag, making it easy to handle and store. When not in use, the generator cord can be easily rolled up and stored without taking up space in your RV or home. Rely on our kit for a stable and dependable power output!

【50 AMP GENERATOR EXTENSION CORD】: NEMA 14-50P male plug into generator power socket, CS6364 connects to 50 amp generator inlet box. Perfect for use with a backup power supply during a power outage.

【HIGHT QUALITY MATERIAL】: 600Volt thermoplastic STW Jacket all-copper wires in ETL standard for heat-proof insulation and antioxidants. Features excellent abrasion, oil and moisture resistance and flexibility. It should last for a long time even with rugged use.

【TWIST LOCKING DESIGN CONNECTOR】: Locking ring design keeps dust and rain out of plug connection. When the plug is inserted and twisted into the locked position, it will not slip from the generator socket due to wind, hurricane, heavy rain, snow, etc.

【PRODUCT SPECIFICATION】: Support max 50 Amp overload, 125/250V, max wattage 12500 watts, 15 feet, STW power cord with 14-50P male plug and CS6364 connector.

【WHY CHOOSE US】: Rophor specializes in the production of various adapter power cords. The products have been rigorously tested to ensure that each product received by our user can work perfectly. Won’t sacrifice the quality for the price.

🚍【Generator Cord 50 Amp】Plug (Male): NEMA 14-50P, 50-Amps, 125/250-Volts,Cord type: STW 6/3 + 8/1 AWG,Maximum Wattage: 12,500 Watts,Length:20 Foot, Finger grip male plug makes it easier for you to plug and unplug;Receptacle (Female): NEMA SS2-50R, 50-Amps, 125/250-Volts, Twist Locking Style

🚍【Generator Power Inlet Box 50 Amp】 50A Generator Cord Inlet Box, 125/250V, 12500W, designed for all 50 amp NEMA SS2-50 generator cord, 4-8 AWG Wire Supported in Max. It’s one great partner for generator to be installed outdoors in an open area, providing and maintaining continuing backup power supply, especially when short of power, terrible weather

🚍【ETL Listed】Our Generator Cord and Power Inlet Box has passed the certification of ETL.Our PB50 power inlet box and Generator cords 50 amp is also one good choice for the generator 50Amp 12500W.It is high quality with the features of wind-proof, rain-proof. You can accommodate our generator cord to use with inlet box to match your generator

🚍【Widely Application】Perfectly suitable for camping, tailgating, outdoor and sporting in spite of hurricane season and other bad weathers

🚍【Warm Tip】Our aims are to provide much variety of items in the field of RV, Welding,and other parts.If there are any questions or needs,please feel free to tell us

Sturdy& Efficient: Heavy duty cord made of 100% copper coated with PVC to provide weather resistance, good conductivity, more flexibility to last and withstand harsh weather conditions, especially flame retardant, heat resistance, and UV resistance

Specification: UL Certification, 6/3+8/1 Gauge STW wire, 50A NEMA 14-50P Male to NEMA SS2-50R Female; Rated: 125/250 Volt, 6250/12500 Watt

Finger Grip Plug & 90°Heads: Allows you to plug in or unplug easily; the strain relief structure makes the cord not easy to break; 90°Heads maintain flexibility and reduce pressure on the cord

Versatile: 50 Amp locking cord allows you to connect the RV park power to your RV, campers, trailer, or vehicle with a 50 Amp inlet and your generator to your house

Easy to Organize: Come with a storage bag and strap to make the cord neat when not using; easy to store in your RV or garage

ALL-WEATHER INDOOR/OUTDOOR USE: 25-foot long, 10 gauge/3-conductor 3-pronged all rubber locking 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.

TWIST AND LOCK MECHANISM: 30 amp and 250 volt single phase NEMA L6-30 locking power cord. The locking plugs have the pins arranged in a circular manner. The plug is inserted and twisted to lock in place. Both plug and receptacle can be disassembled from the cable in case you want to install a different NEMA type for your specific needs.

EXCELLENT PLIABILITY: Pliable, flexible all rubber cord gives you a clean current in subzero weather conditions. 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 extension cord that has excellent flexibility straight out of the box.

FOR HIGHER AMP LOADS: Larger gauge wiring is well built to give you peace of mind when running higher amp loads. The black rubber is accented by bright yellow 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 extension 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 extension cord as a handy helper to get the job done.

Premium 50A Generator Cord: Our generator cord is STW gauge with 6/3+8/1 AWG Cord, supporting up to 50 AMP current. Featuring a NEMA 14-50P male plug designed to fit into a 50A generator output and a twist-lock NEMA SS2-50R female plug for a secure connection to a 50A power inlet box with a NEMA SS2-50P male end. Perfect for emergency power needs in any weather!

ETL Certified Reliability: Ensure ultimate security and durability with our ETL-certified generator cord and power inlet box, designed to withstand tough conditions. This 15-foot heavy-duty generator cord is crafted from pure copper wiring and encased in flame-retardant PVC that resists heat and UV damage. It protects against rain, wind, snow, soil, and rocks, even when used outdoors for long periods.

Flip Cover Power Inlet Box: Featuring a pre-drilled hole design with detachable plug, this power inlet box simplifies installation without additional tools. Its entire casing is coated with a rust-resistant layer, providing robust protection against wind, rain, and dust. The clear indicator light on the flip cover illuminates when the power is successfully connected, allowing for easy visibility at any time of day or night.

Twist-Lock Design: Our generator cord features a thoughtfully designed handle on the male plug, making it effortless to connect and disconnect while reducing the risk of damage from forceful interactions. The female end boasts a robust twist-lock mechanism that securely locks the plug into place with a simple twist. It ensures a stable, slip-free connection and shields the interior from dust and water intrusion.

Ideal for Outdoor Power Needs: Experience uninterrupted power supply to your home or RV with our 50A generator cord and power inlet box kit, even during power outages and severe weather conditions. It includes a carrying strap and a storage bag, making it easy to handle and store. When not in use, the generator cord can be easily rolled up and stored without taking up space in your RV or home. Rely on our kit for a stable and dependable power output!

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:25 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 (25FT) + 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.

Heavy Duty Combo Kit: Ready for the next power outage? Rophor Heavy Duty Combo Kit is the ultimate solution for homeowners. With a 50 amp generator cord and power inlet box, you can easily power essential appliances and circuits

User-Friendly Design: Forget complicated installations! 50 Amp generator inlet box features pre-drilled 1.2” holes for easy wiring, no tools needed. Just open the holes with your fingers in seconds. Plus, the clear indicator light on the flip cover shows when the power connection is active—no guesswork

ETL Listed for Safety: Your safety is our priority. Our 50 Amp generator cords and inlet boxes are ETL Listed and built tough for outdoor use. The generator cord is made of pure copper wire and flame-retardant PVC to protect it from heat and UV damage. Whether it’s rain, snow, or rough conditions, you can count on reliable performance

Key Specifications: 50 Amp Generator Cord: 25FT; Male: NEMA 14-50P, Female: SS2-50R; 50 Amps, 125/250 Volts; Max Wattage: 12,500 Watts; Twist-Locking Connector. 50 Amp Generator Inlet Box: NEMA SS2-50P; 125/250 Volts; 12,500 Watts; Green Safety Light; ETL Listed

Thoughtful Details: Built for convenience. Both ends have a grip design for easy insertion and removal, while the female end features a twist-lock connector for a secure, dust- and water-resistant connection. Choose from various cord lengths to safely position your generator away from the house

Perfect for Home Backup Power: Be prepared for anything! Use the 50 Amp generator cord and power inlet box to power your home during an outage or emergency. With easy installation, a durable sealed design and reliable power, this is the ideal solution for connecting your generator and keeping your home running smoothly

GUARANTEED SAFETY: Heavy duty power cord is made of 100% pure copper wire with flame retardant graphic layer and PVC jacket. The power cord is UL listed and the power inlet box is ETL listed. They are designed to remain functional in extreme weather.

SPECIFICATIONS：Length:15 FT; Voltage: 125V/250V; Wire Gauge: STW 6/3 + 8/1 AWG; PLUG: 50AMP NEMA 14-50P Male to NEMA SS2-50R Female; Twist Locking Connector; Maximum Wattage: 12,500 Watts.

EASY TO USE PRE-DRILLED BOX: Measuring up to 6.3'*4.25'*3.1', Landnor 50AMP NEMA SS2-50P Inlet box is designed with pre-drilled holes in all four directions and a larger size box. You can easily open the drilled holes to connect switches and electrical panels from any direction. The larger space is your neater wiring, faster heat dissipation and easier operation.

ERGONOMIC DESIGN: The twist-lock ring on the female plug of the 50 amp generator cord helps keep dirt and rain out of the plug connection, while the ergonomic finger grip on the male plug makes it easier for you to plug and unplug. The generator box has a full-coverage rust-resistant coating that provides strong protection against wind, rain and rust. It has a flip-top lid with wind- and rain-resistant foam to keep out dust and moisture.

ALL WEATHER KEEP WORKING: This generator extension cable with air intake box provides a safe and convenient way to connect your generator to your home's manual transfer switch, our generator-to-home connection kit works well in all kinds of harsh weather conditions, whether it's a hurricane or a blizzard, and ensures a stable and continuous supply of power in case of power outage emergencies.

What You Get: 1 x 50 Amp Generator Cable (15 feet) + 1 x 50 Amp Generator Entry Box (pre-drilled) + 1 x Cable Tie + 1 x Storage Bag + 1 x User Manual. In addition, we provide 1 year warranty and 90 days no reason return service. If you encounter any problems when using our products, please feel free to contact us, there are professional customer service waiting for you to help solve your problems.

【Heavy Duty Generator Cord】Length: 20 FT; Male plug: NEMA 14-50P; Female plug: NEMA SS2-50R; Wire Gauge: 6 AWG + 3*8 AWG, 4 conductors; Voltage: 125V/250V; Max wattage: 12500 Watts.

【User-Friendly Pre-Drilled Power Inlet Box】SS2-50P Power Inlet Box is designed with pre-drilled holes on all 4 sides and features an enough space box measured 4'' x 3'' x 6.1''.

【Weatherproof Generator Inlet Box Kit】The generator power cord is made of 100% copper wire coated with a heavy duty flame retardant, heat resistant PVC sheath & water resistant molded plug.

【Electricity Safety】The generator cord and power inlet box are ETL listed. The cord is with a twist lock male plug which has lock function to prevent the plug falling down. Moreover, the power inlet box cover is with a safe light indicator to show you the working condition.

【What You’ll Get】You will receive 1 x 50 amp generator extension cord (20 feet) + 1 x 50 amp generator inlet box (pre-drilled) + 1 x cable organizer + 1 x user manual.