The 10 best 4-prong to 3-prong generator adapters of 2025

Male: 30 Amp 125V NEMA TT-30P for RV camper and 30 Amp generator outlet.

Female: 30 Amp 125V/250V NEMA L14-30R generator twist locking outlet connector.

A must if your power generator is without an L14-30R receptacle. Perfect for the generator to the house from TT-30R outlet on the generator. Easy to use, no assembly required.

Heavy-duty copper wiring coated wire with flame retardant, UV-resistant, STW water-resistant PVC jacket, ETL Certified.

If you have any questions, please contact us to get service.

【Electrical Rating】30 Amp 125V, 3 prong NEMA L5-30P locking male plug, 30 Amp NEMA L14-30R female plug, L5-30P male plug is connected to the generator socket, L14-30R female plug is connected to the power inlet box, 1.5 Feet

【Superior Specification】Heavy duty 10 Gauge power cord ,rated to support up to 3750 watts Max (Attension: Generator L5-30 Male Provide max 30 amp only)

【Attension】Check carefully the outlets on your generator. This is not compatible with a 4 wire twist lock (L14-30P) receptacle, and check the voltage and amp rating of your equipment to prevent overloading

【Superior Durability】Pure copper wiring coated with a heavy duty flame retardant, heat resistant, UV resistant PVC , suitable for various harsh environments, ETL-listed

【Twist Lock Design】The L5-30P male plug and L14-30R female plug come with twist lock design, prevent the adapter from accidentally falling off

【Male】NEMA L5-30P 30 Amp 125 Volt locking plug, 12 inch.

【Female】NEMA L14-30R 30 Amp 125/250 Volt generator outlet.

【Heavy Duty】Made of pure copper wire and coated with STW insulating jacket. Molded plug. Excellent oxidation, abrasion and oil resistance, withstands harsh conditions outdoors like hurricanes, storms.

【A Must】A must if your power generator without L14-30R outlet. Perfect for power your home power system from generator for emergency power using. Easy to use, no assembly required.

【Emergency Ready】 This 30 Amp 3 Prong to 4 Prong generator adapter cord provides a safe and convenient way to direct the power of the generator to the devices you need to charge, providing the power you need in bad weathers. Also for house building.

NEMA L5-30P to NEMA L14-30R generator power adapter plug

Designed with grooves to hold tightly for a non-slip grip. One-piece unbreakable PVC housing, No Assembly Required.

Easy to use compact design, and save space.

Interface locking outlet on generator to a heavy-duty extension cord

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Male: NEMA L5-30P 30 Amp 125 Volt locking plug, 12 inch

Female: NEMA L14-30R 30 Amp 125/250 Volt generator outlet

Heavy Duty: Molded plug, copper wiring coated wire, heavy duty flame retardant, UV-resistant, STW indoor/outdoor water-resistant PVC jacket in UL 62 standard, and plug in UL 817 standards

A Must: A must if your power generator is without an L14-30R outlet. Perfect for powering your home power system from the generator for emergency power use. Easy to use, no assembly required

Upgraded: Upgraded quality for ten years or longer time using. Its unique color makes it stand out in a tote full of other adapter cords, making it quick to find. No matter whether the return window is closed or open, please contact us to get service

【Electrical Rating】30 Amp 125V, 3 prong NEMA TT-30P male plug, 30 Amp NEMA L14-30R female plug, TT-30P male plug is connected to the generator socket, L14-30R female plug is connected to the generator power inlet box, 1.5 Feet

【Superior Specification】Heavy duty 10 Gauge power cord ,rated to support up to 3750 watts Max (Attension: Generator TT-30 Male Provide max 30 amp only)

【Mutiple Use】This 30A portable power adapter is an must accessory to connect a transfer panel switch from a generator, or power an RV or a portable power distribution box from the power predestal

【Superior Durability】Pure copper wiring coated with a heavy duty flame retardant, heat resistant, UV resistant PVC , suitable for various harsh environments, ETL-listed

【Grip Design】The TT-30P male plug comes with grip handles, Easily and safely to plug in and plug out

Right Angle 90 Degree Heads: Help Reduce Pressure And Stress On the Adapter And Its Connection

Two Hots bridged

10AWG, Made of High Quality Copper Wire

【NEMA Configuration】 Generator 30 Amp locking L14-30P male plug and RV 30 Amp TT-30R female outlet;

【Cord】10AWG/3C copper inner wire, and heavy duty, flame retardant, UV-resistant, STW indoor/outdoor water resistant PVC jacket, 12 inch;

【Uses】When RV 30A cord with TT-30 plug need to get power from generator 4 prong twist lock L14-30 outlet;

【Features】Male with twist lock design for safety. Female with grip handle easy to push and pull;

【Certified Product】ETL listed, allowing you to use for ten years or longer.

Heavy-duty round power adapter plug for generator 100% cooper conductor inside.

Pins and terminals are made with nickel-plated brass to prevent oxidation rust.

1 piece compact style Adaptor for generator L5 120V to L14 120V/250V home transfer switch or house panel

AC Power Adapter L5-30P to L14-30R 125V/3750W.

Generator L5 30 AMP 3-prong locking male plug, L14 30 AMP 4-prong locking female connector (X-pole connected to Y-pole ,two hots bridged)

Color : Upgrate to Yellow with lighted.

240V 30 AMP, CANNOT TRANSFORM TO 120V

L14-30P Ground connects L6-30R Ground, No Neutral

L14-30P Hots connect L6-30R Hots

Made of High Quality Copper Wire