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The Best Nema L14-30 of 2023 – Reviewed and Top Rated

2,138 Reviews Scanned

Rank No. #1
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. #2
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. #3
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. #4
STARELO 30 Amp Locking Female Plug Box NEMA L14-30C Generator Twist Lock Adapter Female Connector,125/250 Volt,Outdoor dustproof and Weatherproof for generators, Welding Machines, etc.ETL Listed.
  • Specifications: NEMA L14-30C, one Locking Female Plug with protective box.
  • Parameters: ETL Listed, 125/250V, 30A, 3 Pole 4 Wire Grounding Type.Protection class: IP66.
  • Function: Reinstall or replace your home/outdoor outlet.
  • Design: The socket comes with a protective box, which is made of high-quality plastic. When not working, cover the cover to prevent dust from entering, reduce the damage caused by radiation to the human body, and have waterproof function.
  • Applicability: Use with generator transfer switch,Used for the connection of generators or welding machines.
Rank No. #5
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. #6
Miady NEMA L14-30R Generator Plug, 30 Amp 4-Prong Industrial Grade Locking Female Plug Up to 7,500W, Grounding Type/UL listed
  • 【NEMA L14-30R】: Heavy Duty L14-30R Locking Plug, 3-pole, 4-wire Grounding Type at 125/250V, uses with 10-gauge cord for up 7,500W of generator with 30A outlet.
  • 【KEEP OUT DEBRIS/ MOISTURE】: Built with rubber grommet inside, give moisture and dirt protection for different sizes of cords.
  • 【SAFE ENOUGH】: The contacts are in plastic housings without wrapping wires around screws, slide each wires into an individual tube and tighten, prevent shorting or stray strands.
  • 【TIGHTLY LOCK】: Screw down stress relief section, secure locking on generator to keep it from vibrating loose and falling out.
  • 【BUILT TO LAST】: UL Listed, Well-conductive copper parts and Nylon bases construction are rugged and durable for dependable use. - We provide 24*7 friendly customer support and also back our products for 18 months. Please feel free to contact us.
SaleRank No. #7
Generator Power Inlet Box, 30 Amp Generator Transfer Switch, NEMA L14-30P, Generators Up to 7,500 Running Watts 30Amps 3R NEMA Generator Inlet Box ETL Listed
  • 30 Amp, 125/250V, NEAM L14-30 inlet plug,Generators Up to 7500 Running Watts PB30 30Amps 3R NEMA Power Inlet Box.ETL listed.
  • The generator transfer switch box has design patent, waterproof flip lid,easy to use, higher security,effective waterproof and dust-proof, ensuring safety use in any environment. anti-corrosive powder-coat paint,anti-corrosive powder-coat paint,rust proof
  • The generator inlet box has generous wiring space and facilitates through-in; the face of the box is removable for easy placement and wiring
  • The power inlet box designed to be installed outdoors in an open area where the generator, this watertight electrical inlet box eliminating the need for cords running through windows or doors.Great for backup power during a power outage
  • Sturdy structure,easy to install.Three knockouts are located on the inlet,push-in wire connections,there are pre-punched sturdy screw holes for easy mounting on the wall
Rank No. #8
Journeyman-Pro 2710, NEMA L14-30R, 30A 125/250 Volt, Flush Mounting Locking Receptacle Socket/Outlet, Black Industrial Grade, Grounding Welding/Generator Rated 7500 Watts (1, 2710 w/SS Faceplate)
  • Rugged PBT Body & Extra Thick Mounting Strap Resists Damage from Severe Impact, Abrasion and Chemicals
  • 30 Amp - 7500 Watts 125/250 Volts AC - 2HP Rating, 3-Pole 4-Wire Grounding Type
  • Heavy Duty Industrial Grade for Generators, Transfer Switches, Welding Equipment, Marine or RV Camper Power
  • Flush Mount, uses Standard 1.60” cover plate, Accommodates 8-14 AWG Gauge Wiring
  • The Pro's Choice!, cUL Listed Receptacle, with Lifetime No-B.S. Warranty!
Rank No. #9
ACKING 30 Amp NEMA L14-30/Four 5-20R Generator Locking Cord, 4-Prong 10 Gauge Cord to Household Cable,Generator Adapter, 125/250V 30 Amp 7500 Watts UL Listed, 1.5FT
  • ADAPTER CORD: NEMA L14-30P to (4) 5-15/20R adapter ,30Amp 125/250Volt 4-Prong Locking Male Plug are used for most household tools and electrical appliances, very suitable for distributes temporary power at job site or campsite.
  • HIGHT QUALITY MATERIAL: 10/4 30Amp Copper wire With 300Volt Anti-Cold weather Jacket,features excellent abrasion, oil and moisture resistance and flexibility. It should last for a long time even with rugged use.
  • Product Specification: Support max 30 Amp overload, 125/250V, max wattage 7500 watts, 1.5 feet,4-Prong 10 Gauge Distribution Cord with L14-30/ 4X 5-20R female receptacle.
  • SAFETY ASSURANCE: Adapter are UL compliant,The clear end receptacles, provide optimum performance and added safety.
  • Why to Select Us: ACKING specializes in the production of various adapter power cords. 100% of the products have been rigorously tested to ensure that each product received by our user can work perfectly.
Rank No. #10
RVGUARD 4 Prong 30 Amp 15 Foot 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 15FT generator extension cord 125/250V. Deliver power from your generator to your end-use device.
  • Twist Lock Design – Twist lock plug avoids cord falling off. The strain relief structure makes the cord not easy to pull out.
  • Weather Resistant – All-weather resistant jacket remains flexible and will not crack or deform in temperatures from 221 ℉ to -40 ℉. Specifically designed for extreme weather conditions.
  • Heavy Duty – Big gauge and pure copper to avoid the cable getting overheated from long-time use. Long enough to keep your generator in a safe place while running.
  • Storage – Colorful storage bag and cord organizer with carrying handle keep power cord neatly for storage.
SaleRank No. #11
GeepKey 30 Amp Power Inlet Box, NEMA 3R Power Inlet Box, NEMA L14-30P PB30 Power Inlet Box, 125/250 Volt, 7500 Watts Generator Transfer Switch, Weatherproof for Outdoor Use, ETL Listed
  • ETL Certification: 125/250V, 7500W, 30Amp generator inlet box with NEAM L14-30 inlet generator plug, suitable for all 30 amp NEMA L14-30 generator cord. This pb30 power inlet box is a good partner for the generator to accommodate the power cord. It is designed to be installed in outdoor areas where generators are used outdoors, and also be ideal for backup power during power outages/bad weather, etc.
  • Best Choice for Outdoor: the whole body of GeepKey generator power inlet box is covered with anti-rust coating, with powerful features such as wind, rain and rust! In addition, it adopts a flip design (with weatherproofing foam inside), which is dedicated to preventing dust and humid air; it can provide the best protection in any bad weather!
  • Green Safety Light: There is a clear green warning light on the flip cover, which will be lit when the power connection is successful; Comparing with the old version, this generator inlet 30 amp plug can see a clearly visible green light indicator when working (especially in Night and dark areas), thus providing the best performance and higher security
  • Large Space with 4 Way Connection: The large space of 6.1*4.1*3.1 inches allows you to wire more neatly; the heat dissipation effect is better, and it has a longer service life. The front panel can be removed, making installation more portable. And the 1.2-inch combination hole with 4 areas (left, right, bottom, rear) can be directly connected to the switch and electrical panel from multiple directions
  • 100% satisfactory service: This product is an upgraded model developed by us in accordance with market needs. Its performance, material, life, safety and other aspects are optimized、upgrade by our professional engineers, and we provide customers with 18 Month’s high-quality after-sales service; if you have any questions, please feel free to contact us
Rank No. #13
Miady NEMA L14-30P Generator Plug, 30 Amp 4-Prong Industrial Grade Locking Male Plug Up to 7,500W, Grounding Type/UL listed
  • 【NEMA L14-30P】: Heavy Duty L14-30P Locking Plug, 3-pole, 4-wire Grounding Type at 125/250V, uses with 10-gauge cord for up 7,500W of generator with 30A outlet.
  • 【KEEP OUT DEBRIS/ MOISTURE】: Built with rubber grommet inside, give moisture for different sizes of cords.
  • 【SAFE ENOUGH】: The contacts are in plastic housings without wrapping wires around screws, slide each wires into an individual tube and tighten, prevent shorting or stray strands.
  • 【TIGHTLY LOCK】: Screw down stress relief section, secure locking on generator to keep it from vibrating loose and falling out.
  • 【BUILT TO LAST】: UL Listed, Well-conductive copper parts and Nylon bases construction are rugged and durable for dependable use.
SaleRank No. #14
BEBOBLY Generator Inlet Box, 30 Amp NEMA L14-30P Power Inlet Box for 4 Prong Generator Cord, 7500 Watts,125/250 Volt Receptacle for Outdoor Use, Weatherproof, ETL Listed
  • 【ETL Listed】30A, 125/250V, 7500W Power Inlet Box, equipped with L14-30P male configuration, for use with all generators up to 7,500 Running Watt. The preferred accessory for portable generators and backup power supplies.
  • 【3.1" Larger Space】 Dimension 6.1*4.1*3.1 inch, with removable front panel for easy inspection and quick wiring, what's more, better heat dissipation and long service life.
  • 【Threaded Ring Design】It allows locking the plug when using heavy-duty wire to connect generators. Providing a stronger connection and creating a weatherproof connection, ensuring further moisture protection during outdoor use.
  • 【Designed for Outdoor Use】The heavy-duty steel body is covered with anti-rust powder coating to allow the generator to function properly in any harsh environment. A weatherproof seal front cover will protect the inlet when not in use.
  • 【4 Ways to Connect】Design with 1.2" holes in 4 directions(left, right, bottom, back), select a knockout and drill base on actual needs, the rest will maintain weatherproof integrity, which will not degrade over time like rubber plugs.
Rank No. #15
yodotek 1.5FT NEMA L14-30/Four 5-20R Generator Locking Cord,30Amp 4-Prong 10 Gauge Distribution Cord,Generator Adapter, Household Cable,125/250V 30Amp 7500 Watts
  • 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.
  • NEMA L14-30P 30Amp 125/250Volt 4-Prong Locking Male Plug.Generator Power Extension 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!.Four NEMA 5-15/20 20Amp T-Blade Household Connector
  • WEATHER/WATER/FIRE RESISTANCE The good quality of the SJTW cable 105℃ with the FT-1 level fire resistance.The cable can be used indoor/outdoor for all weather and season,it is also with the water resistance,much safer for emergency and extreme weather using.Power Distribution Cord
  • HEAVY DUTY The big gague and pure copper can avoid the cable getting overheating from long -time use.It is a useful and reliable emergency extension cord for your generator.
  • 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.
Rank No. #16
Journeyman-Pro 2713 30 Amp, 125/250 Volt, NEMA L14-30R, 3P, 4W, Locking Plug Connector, Black Industrial Grade, Grounding 7500 Watts Generator Rating (L14-30R (Female Plug))
  • INDUSTRIAL GRADE: NEMA L14-30R, 3 Pole, 4 Wire, Locking Connector 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. #17
Nema L14-30P 30A 125/250V 3 Pole 4 Wire Industrial Grade Locking Male Plug, Industrial Twist Lock L14-30 30-Amp Locking Plug. LK-6431
  • Twist Locking type NEMA L14-30P male 30Amp 125/250 Volt male industrial grade ac power plug, UL CUL certificated.
  • The plug works in both 125Volt and 250Volt, rated @ 30-Amp. The strain relief support maximum cable OD=10# AWG
  • Non Slip Nylon+PBT plastic housing and 100% pure copper terminal blade. Support power cable maximum AWG 10
  • 3-Pole, 4-Wire Grounding, NEMA L14-30P, 30A 125V/250V, AC 60HZ The locking plug wiring devices are designed for industrial and commercial applications
  • Rewirable DIY design, easy to install,
Rank No. #18
STARELO 30 Amp Generator Power Inlet Box NEMA L14-30P,125/250 Volt 7500W, Outdoor dustproof and Weatherproof for generators, Welding Machines, etc.ETL Listed.(NEMA L14-30P Box)
  • Specifications: NEMA L14-30P, one Power Inlet Box with protective box.
  • Parameters: ETL Listed, 125/250V, 30A, 3 Pole 4 Wire Grounding Type.Protection class: IP66.
  • Attention:The reserved thread on the product is metric thread,if you needed,it can achieve IP66 protection level with the M25/M32 metric waterproof connector in the STARELO store.
  • Design: The socket comes with a protective box, which is made of high-quality plastic. When not working, cover the cover to prevent dust from entering, reduce the damage caused by radiation to the human body, and have waterproof function.
  • Applicability: Use with generator transfer switch,Used for the connection of generators or welding machines.
Rank No. #19
RVMATE 30 Amp Generator Cord 4 Prong 10 Feet, NEMA L14-30P/L14-30R, 125/250V Up to 7500W 10 Gauge SJTW Generator Extension Cord, ETL Listed
  • 🚩【Powerful】:RVMATE 30 amp generator cord provides a safe and reliable electrical connection between your generator and power inlet box, allowing them to power appliances/devices during a power outage or in remote locations where electrical power is not available.
  • 🚩【High Conductivity】 : Features a standard 30A (NEMA L14-30P) male plug and 30A (NEMA L14-30R) female connector. RVMATE generator power cord is ETL certificated, rating 10AWG/4C 30A 125/250V 3750/7500W. The conductor is 100% copper wires for superior conductivity.
  • 🚩【Flexible, Safe & Durable】:The 4 prong 30 amp generator cord will remain flexible and easy to be winded up even in cold weather. Made of flame retardant, heat-resistant (max work temperature: 60℃) heavy-duty PVC sheath, it Protects the safety of you and your family.
  • 🚩【Useful Design】: Constructed with twist lock plug and connector to prevent wire from falling during use. The plug has strain-relief design to reduce stress on the power cord and its connection.
  • 🚩【What you get】: Every package will contain generator extension cord, generator adapter plug, bag and towel, help you organize and clean the cord.
Rank No. #20
ONETAK NEMA L14-30P to L6-30R 240V 30 Amp Twist Lock 4 Prong Male Plug to Twist Lock 3 Prong Female Outlet Receptacle Generator Welder Dryer EV Charger Power Cord Adapter
  • 240V 30 AMP, CANNOT TRANSFORM TO 120V
  • 240V 30 AMP, CANNOT TRANSFORM TO 120V
  • 240V 30 AMP, CANNOT TRANSFORM TO 120V
  • L14-30P Ground connects L6-30R Ground, No Neutral
  • L14-30P Hots connect L6-30R Hots

Last update on 2023-08-06 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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