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The Best Nema L14-30 of 2022 – Reviewed and Top Rated

2,152 Reviews Scanned

Rank No. #1
RVMATE 4 Prong 30 Amp 50 Feet Generator Extension Cord, NEMA L14-30P/L14-30R, 125/250V Up to 7500W 10 Gauge SJTW Generator Cord, ETL Listed
  • ITEM DETAIL: 50ft NEMA L14-30P to L14-30R SJTW 10 Gauge 4 Prong generator extension cord 125/250V up to 7500W.
  • DECENT QUALITY: 100% copper wire is coated with heavy flame retardant, heat-resistant and UV resistant PVC, the cord is waterproof and flexible.
  • WHAT YOU GET: Every package will contain generator extension cord,generator adapter plug, bag and towel, help you organize and clean the cord.
  • SAFE DESIGN: Constructed with twist lock plug and connector to prevent wire from falling during use.
  • VARIOUS SIZES: Our generator extension cord can be used with generator, portable tools and other equipment. By the way, there is different size to select.
Rank No. #2
ENERLITES NEMA L14-30P Locking Plug Connector for Generator, Twist Lock Male Plug, 30 Amp, 125/250 Volt ,3 Pole, 4 Wire Grounding, Industrial Grade Heavy Duty, UL Listed, 66470-BK, Black
  • Industrial Grade Locking Plug, NEMA L14-30P
  • 30 Amp, 125/250 Volt, 60Hz, 3-Pole, 4-Wire Grounding
  • Made of Polycarbonate Thermoplastic (PCT) material to provide the durability and resilience to withstand hard impacts and heavy force
  • Easy to use for do-it-yourself installation; twists to lock with connector 66492-BK, NEMA L14-30C
  • One-year warranty; UL Listed
Rank No. #3
BougeRV 30 Amp 40 Ft Generator Power Cord for Manual Transfer Switch Nema L14-30 10 Gauge, Heavy Duty Electric Extension Wire 4 Prong 10 Gauge SJTW Cable 125/250V 7500 Watts for Champion
  • 【30 AMP GENERATOR POWER CORD 】10 gauge 4 wire Nema L14-30P and Nema L14-30R is designed for connecting directly to your home's electrical system. Offering 125/250 volts can run the max wattage of 7500 watts.
  • 【TWIST & LOCK DESIGN】Design with the lock structure, the locked plug can’t fall off due to external resistance such as a hurricane, heavy rain, or heavy snow. When P&G POWER cuts the power to California resistents, with this cord, you will not worry about the power outage again.
  • 【SAFE LENGTH 40FT with ETL LISTED】Safe extends your power up to 40ft away, protecting you and others from hazardous generator exhaust.
  • 【EMERGENCY MATE】Can be used indoor/outdoor for all weather and season, water-resistance, much safer for emergency and extreme weather use. No matter transformer explosion, or mass power outage, BougeRV serves you with quality. When Hurricane, Tornado, Snowstorm, Earthquake, Flood, Wildfire and other disasters lead to power failure, this Generator Power Cord will come in handy for everything Power Up again.
  • 【WARRANTY & SERVICE】With ETL certificate. BougeRV promises 18 months warranty and lifetime warmhearted service to assure your long-term enjoyment.
Rank No. #4
25 Feet NEMA L14-30P/L14-30R Generator Extension Cords, 4 Prong Heavy Duty, 30 Amp,125/250V,Up to 7500W 10AWG Cable and The Cable UL Certification,Yellow
  • 30Amp extension cord with NEMA L14-30P to L14-30R plug, SJTW 10AWG cable 125/250 volts, 7,500 watts, with tightly lock.
  • Power cord is Anti-Cold weather rubber which stays flexible in cold weather. Avoid the trouble of straightening frozen power lines.Unaffected by rain or the elements other than discoloration from the sun.
  • Protect against power outages caused by a variety of severe weather conditions, such as hurricanes, snow, and bad storms.
  • The yellow color makes it visible,Apply to running power from generator to house. Operating your generator to a transfer switch panel or inlet box.
  • Extension cord is Listed to applicable UL Standards and requirements by UL. We guarantee good quality and Promise 12 month warranty.
Rank No. #5
Parkworld UL Listed 30amp 4 Prong Generator Extension Cord, NEMA L14-30P to L14-30R Female with Lighted. (50 Feet)
  • UL & cUL approved and Listed, Heavy-duty for 4 prong generator, 100% copper conductor inside.
  • Generator 4-prongs Twist Lock L14-30 Locking Connector, 120 Voltage / 240 Voltage, Female with Lighted.
  • Molded with electroplate copper terminal in order to avoid surface oxidation effectively.
  • Universal to All Other Brands Generator 4-ping Generator, Max Rate 3750 Watt (125V) / 7500 Watt (250V).
  • STW 10AWG/4C stranded wire extension cord, support max 30 AMP overload. Length : 50FT (50 foot).
Rank No. #6
ELEGRP NEMA L14-30R Locking Connector, Generator Twist Lock Adapter Female Connector, 30 Amp 125/250V 3 Pole 4 Wire Grounding, Industrial Grade Heavy Duty, UL Listed (1 Pack, Black/White)
  • ✅【Toughened Nylon Construction + Copper Brass Connectors】 Insulated and solid nylon housing will keep non-current carrying parts from becoming energized and won’t crack in high abuse applications. Formed from a single piece of solid brass to reduce friction and overheating, providing excellent conductivity.
  • ✅【Tight Lock】 Secure locking design that plug is locking tightly on electrical equipment to keep it from vibrating loose and falling out. Internal cord clamp assures secure wire connection.
  • ✅【Safe Enough】 Each wire slide into a separate tube and to be tightened to prevent shorting or stray strands. Flexible rubber dust seal prevents moisture and contaminants from entering the wiring chamber.
  • ✅【Good to Use and Install】 Ergonomic fluted body design with radial grip ridge is ideal for gripping, turning and pulling. Face and body feature alignment make it easy to assemble. Grip screws are installed from the same side to make tightening easy. Pocketed recess for cord grip screws deters the slippage of the screwdriver.
  • ✅【Wide Application】 Typically used for generators, temporary power solution, transfer switches, welding equipment, RV, trailer & camper trailer & camper welding equipment, etc.
SaleRank No. #7
Leviton 2711 30 Amp, 125/250 Volt, NEMA L14-30P, 3P, 4W, Locking Plug, Industrial Grade, Grounding - Black-White
  • Heavy Duty construction
  • Suitable for homeowners all the way up to professional contractors
  • Commercial grade performance and durability
Rank No. #8
RVGUARD 4 Prong 30 Amp 10 Feet Generator Extension Cord, NEMA L14-30P/L14-30R, 125/250V Up to 7500W 10 Gauge SJTW Generator Cord, ETL Listed
  • Quality Cable – NEMA L14-30P to L14-30R SJTW 10 Gauge 4 Prong 10FT generator extension cord 125/250V.
  • Well Made – Twist lock plug avoids cord falling off. The strain relief structure makes the cord not easy to pull out.
  • Great Value – Big gauge and pure copper to avoid the cable getting overheating from long time use.
  • Heavy Duty – All-weather and water-resistance, much safer for emergency and extreme weather using.
  • Storage – Colorful storage bag and cord organizer with carrying handle keep power cord neatly for storage.
Rank No. #9
Ceptics 100-Ft 30-amp Generator Extension Cord NEMA L14-30 | UL Listed | 4-prong locking plug | 30A, 125/250V
  • Ceptics Advantage: Reliable and heavy-duty extension cord with industry leading lifetime limited warranty
  • Input: NEMA L14-30P 30-amp| Output: L14-30R 30-amp | 125/250V
  • 4-Prong plug converts a 30A locking receptacle on a generator to extend it up to 100 feet. Outdoor rated & Heavy duty - 10 AWG & 10/4 STW - Flexible and weather-resistant for all purpose use
  • Length: 100 Feet | Maximum Wattage Capacity: 7500W @ 250V or 3750W @ 125V
  • UL-Listed: All Ceptics generator power cords and adapters are designed and tested with safety in mind
SaleRank No. #10
Nema L14-30 Generator Power Cord 4 Wire 10 Gauge 125/250v 30 Amp 7500 watts (10 Feet)
  • ★THE BETTER BUY –MPI Tool’s durable and reliable 10 gauge 4 wire NemaL14-30 Generator Power Cord is the premium choice in price and quality. Offering 125/250 volts, we’ve made sure to bring you a versatile tool that will last!
  • ★EMERGENCY READY –Equipped with superior weather-proofing, you can count on reliable 30 amp power flow, especially in those ”extreme” situations. From a transformer explosion and mass power outage, to the hunting camp, MPI Tools serves you with quality.4 conductor 10 gauge wire
  • ★INDOOR AND OUTDOOR –Whether you’re connecting from your generator to a power box outside or inside, we’ve got you covered. All of our power cords are Hard Service Rated, which makes them the ideal choice no matter what your situation!
  • ★4 PRONG –Equipped with a 4 connection “lock-in” relay, and a running power of 7500 watts, you’re sure to find the power transfer you need right here. Enjoy better electrical equipment and auxiliaries from MPI Tools.
Rank No. #11
Parkworld 62305 UL Listed 30amp 4 Prong Generator Extension Cord, NEMA L14-30P to L14-30R Female with Lighted. (100 Feet)
  • UL & cUL approved and Listed, Heavy-duty for 4 prong generator, 100% copper conductor inside.
  • Generator 4-prongs Twist Lock L14-30 Locking Connector, 120 Voltage / 240 Voltage, Female with Lighted.
  • Molded with electroplate copper terminal in order to avoid surface oxidation effectively.
  • Universal to All Other Brands Generator 4-ping Generator Receptacle, Max Rate 3750 Watt (125V) / 7500 Watt (250V).
  • STW 10AWG/4C stranded wire extension cord, support max 30 AMP overload. Length : 100FT (100 foot).
SaleRank No. #12
Rophor 30 Amp Generator Power Inlet Box, NEMA L14-30P Power Inlet Box for 4 Prong Generator Cord, 125/250 Volt, 7500 Watts, Weatherproof, Outdoor Use, ETL Listed
  • Generator Power Inlet Box: Power inlet box is an outdoor/watertight electrical inlet for a 30 Amp L14-30 generator cord. 125/250V, 7500W. Max wire Gauge:10AWG. It is designed to be installed outdoors in an open area where the generator is being used and perfect for backup power during a power outage.
  • Safety Assurance: It is designed to be located outdoors where the generator is running to prevent dangerous carbon monoxide fumes from the generator from entering your house. This inlet box is then safely hardwired through an outside wall directly to the transfer switch or panel, eliminating the need for cords running through windows or doors. Our generator power inlet box passed the certifications of ETL.
  • Best Space Design & Easy to Install: Compared with ordinary boxes, we have increased the wiring space by 50%. There are generous wiring space and facilitates through-in. The front of the box is removable for easy placement and wiring.
  • Weatherproof & Anty-rust: The front entry inlet has a weatherproof spring cover which closes when not in use to protect the inlet from the elements. The surface of the power inlet box with anti-corrosive powder-coat paint which can resist weather damage like rain, UV, will not rust.
  • Green Light Indication: New upgraded version provide a Green Power Indicator. There will be on a green light on the flip lid when plugging into the generator cord and powering on the generator. It gives a visibly clear indication when it is working and inlet is ready to use, which provides optimum performance and added safety.
Rank No. #13
1.5-Feet Nema L14-30P to 6-50R Adapter Cable 125/250V Heavy Duty STW 10AWG 6-50 Welder Adapter, 30A Generator L14-30P to Welder 6-50R 50A Lock in 30Amp to 50Amp Welder
  • Heavy-Duty Lock in NEMA L14-30P (30AMP 125/250Volt) male to Nema 6-50R (50AMP/250Volt) Female ac power adapter cable.
  • Generator Male lock in L14-30P 30AMP male plug to 50AMP welder female receptacle. Connect your welder directly to the wall plate socket of 30amp generator socket (Nema L14-30R Socket)
  • Cable is solid STW 10AWG 3 Conductors. 100% copper wires support max 30AMP/250V, Support maximum 7000-7500 W.
  • The adapter length is 1.5 feet. Approximately 50CM which fits your welder power cord properly, cord in durable molded jacket, plug and the blade in brass.
  • All the power cables we are selling passed 100% related safety and durable testing.
Rank No. #14
BougeRV 30 Amp Generator Power Inlet Box, NEMA 3R Power Inlet Box,NEMA L14-30P,125/250 Volt, 7500 Watts for Generators Outside, ETL Listed, Weatherproof, Outdoor Use
  • 【ETL LISTED】30A, 125/250V, 7500W POWER INLET BOX, NEMA L14-30 inlet plug, compatible with all 30 Amp NEMA L14-30R generator cord. BougeRV 30 amp generator inlet box is designed for outdoors in an open area where the generator is being used and perfect for backup power during a power outage/bad weather(hurricane, flood, blizzard, etc)
  • 【BORN FOR OUTDOOR】Coated with rugged, anti-corrosive powder-coat paint, BougeRV 30 amp generator inlet box has excellent anti-rust and waterproof performance in bad weather such as a rainy and windy day!! In addition, this inlet box adopts a special clamshell design with a weatherproof foam inside to prevent dust and humid air going in, keeping dry in rain, which provids a strong protection in any bad weather!
  • 【EASY TO WIRE WITH 4-WAY CONNECTION】BougeRV 30 amp generator inlet box with generous wiring space (6.1*4.1*3.1 inches) allows you to wire more neatly, which contributes to a better heat dissipation effect and longer service life. The front of the box is removable with a flat-blade screwdriver for easy placement and wiring. With 1.2-inch knockouts from 4 directions (sides, bottom, and back), you can wire this inlet box to the transfer switch or panel from any directions to meet your needs.
  • 【GREEN LIGHT INDICATION】There will be a green light on the flip lid when the connection is working. Compared with the old version, BougeRV 30 amp generator inlet box gives a visibly clear indication when working and the inlet is ready to use, which provides you with better performance and added safety.
  • 【TIPS!!!】To provide a much safer performance by improving the function of waterproof and meet the ETL standards, this inlet box set a more sturdy and solid knockout, which means it's necessary to use professional tools (such as Bi-metal Hole Saw/Step Drill Bi/Hole Cutter/Knockout Punch) to open. If you damage the inlet box with the failure of the knockout, pls contact us first via the seller's contact message. We provide 24*7 friendly customer support and guarantee an 18-month warranty!!!
Rank No. #15
AC WORKS 10/4 NEMA L14-30 30Amp 125/250Volt Generator Rubber Extension Cord (75FT)
  • NEMA L14-30 Generator Extension Cord
  • Transfer Switches Power Cord
  • 30Amp 4 Prong Locking Power Cord
  • SOOW 10/4 30Amp Copper with 600Volt Rubber Jacket
  • 30A 125/250V-Max Operation Power:7500W
Rank No. #16
EXCELFU 30 Amp Generator Power Inlet Box, NEMA 3R Power Inlet Box for 4 Prong Generator Cord, NEMA L14-30P 125/250 Volt Generator Inlet Box, 7500 Watts, ETL Listed, Weatherproof Outdoor Use
  • 30 Amp Generator Inlet Box: 30Amp, 125/250V, 7500W POWER INLET BOX, NEAM L14-30 inlet plug, compatible with all 30 Amp NEMA L14-30 generator cord. 10 AWG max wire gauge. Outdoor certified power inlet box for generator. Ideal solution for power outages or emergency backup power to keep your home geared up and running.
  • Green Light Indication: Upgarded design with a green light on the flip lid. The green light on when the generator plug in the power. The visible light provides more safety and convenience when it is working especially at night.
  • Enough Space: There is plenty of room for heavy gauge wire and facilitates through-in. It's easy to getting the wires in the proper spot with the removable front panel. There are four 1.2-inch knockouts on the left, right, back and bottom for wiring to transfer switch or electric panel.
  • Weatherproof&Sturdy Construction: Constructed of rugged steel and covered with corrosion resistant coating inside and out, our 30 amp power inlet box box is weatherproof and against the elements. The front lid can be closed securly when not in use to protect the connector inlet from moisture and dust.
  • Buy with Confidence: Every 30 amp generator inlet box is backed by 18-month warranty. If you are not satisfied with your purchase, just contact with us and our Customer Service Team will help you RETURN OR REFUND.
Rank No. #17
Journeyman-Pro 30 Amp, Plug & Connector Set, NEMA L14-30R & L14-30P, 125/250V, Locking Plug Socket, Black Industrial Grade, Grounding 7500 Watts Generators (L14-30PR PLUG SET)
  • INDUSTRIAL GRADE: NEMA L14-30R & L14-30P, 3 Pole, 4 Wire, Locking Plug Connector SET Black/Yellow
  • CLEAR SEE-THRU Wiring Block & Color Coded Positive Crimp Lock Wire Clamps Provides Visual Inspection
  • 30 Amp - 7500 Watts 125/250 Volts AC - Grounding Type
  • HEAVY DUTY Use for Generators, Transfer Switches, Welding Equipment, RV, Trailer & Camper
  • cUL Listed 91GG Plug, LIFETIME WARRANTY
Rank No. #19
NEMA L14-30 Generator Extension Cord - 50 Foot, 30A, 125/250V, 8/4 SOOW - UL Listed - Iron Box # IBX-5805-8G-50 (50 ft)
  • HEAVY DUTY / MADE IN USA- Featuring an L14-30P Plug to L14-30R Connector. Rated for 30 Amps and 125/250V. All custom built Iron Box Power cords are built in Raleigh NC
  • HIGHEST QUALITY COMPONENTS – Utilizes top-of-the-line Pass and Seymour wiring devices featuring: Industrial-strength, brass alloy plug blades and connector contacts resist heat rise, provide excellent conductivity. Impact- and corrosion-resistant durable nylon 6 shell material. Integral flexible rubber cord grommet conforms to and seals around wire to provide protection from oils, water, and dirt from entering wiring device.
  • EMERGENCY READY – Equipped with superior weather-proofing, you can count on reliable 30 amp power flow, especially in those ”extreme” situations. Compatible with any generator equipped with a L14-30 receptacle.
  • INDOOR AND OUTDOOR – Made for various uses both indoor and outdoor these cords are built on heavy duty 8/4 SOOW wire capable of being buried directly in the ground.
  • THE WORLDS LEADING POWER CORD SUPPLIER - Iron Box manufactures UL listed power cords with only the best components and wire.
Rank No. #20
50 Foot Heavy Duty Generator Locking Power Cord NEMA L14-30P/L14-30R,4 Prong 10 Gauge SJTW Cable, 125/250V 30Amp 7500 Watts Yellow Generator Lock Extension Cord with UL Listed Magellan
  • UL CERTIFICATE HEAVY DUTY GENERATOR EXTENSION CORD Cords with UL file number E72389-F 10 Gauge SJTW Cable, 125/250V 30Amp 7500 Watts
  • TWIST LOCKING DESIGN Ideal for campers, RV's, gensets
  • WEATHER/WATER/FIRE RESISTANCE Made in the Philippines the SJTW cable is well suited for harsh outdoor use
  • HEAVY DUTY you will not be disappointed in the heft of the cable, it's top notch one of the best in the industry
  • LIFETIME QUALITY GUARANTEE we have full confidence in our products and will ensure you have the cable you need for power transfer

Last update on 2021-11-06 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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