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Top 10August 2025

Best Black 10/3 Gauge Heavy Duty Outdoor Extension Cord 25 Ft Waterproof

We made a list of the top 10 Black 10/3 Gauge Heavy Duty Outdoor Extension Cord 25 Ft Waterproof based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

islewire 25 FT Outdoor Extension Cord with Multiple Outlets, 12 Gauge Heavy Duty Black Extension Cord Waterproof with 3 Outlet, 3 Prong Power Cord for Garden and Home Use Indicator Light, ETL Listed

islewire 25 FT Outdoor Extension Cord with Multiple Outlets, 12 Gauge Heavy Duty Black Extension Cord Waterproof with 3 Outlet, 3 Prong Power Cord for Garden and Home Use Indicator Light, ETL Listed

✓Outdoor Extension Cord: ISLEWIRE 12 Gauge heavy duty extension cord 25-foot is ideal for extending the reach of power tools, gardening appliances, and other power-hungry equipment (such as holiday lights decoration, block heaters, lawn mowers, and snow removal equipment). This 3-outlet extension cord can handle 15 amps, 125 volts, and 1875 watts, making it suitable for garages, homes, offices, and various indoor and outdoor environments.
✓3-in-1 Outlet: 12/3 multiple outlets extension cord is designed with 3 grounded outlets at different angles, making it easy to power multiple appliances simultaneously without blocking each other. Multi-tap pig-tail extension cord is super convenient, letting you add another tool or device without needing an extra cord.
✓Flexible and All-Weather Use: Heavy-duty power cord is constructed with upgraded SJTW (Service, Junior, Thermoplastic, Weather) wire, designed for durability and longevity. Outdoor extension cord can withstand temperatures ranging from -40°F to 140°F, remaining flexible and tangle-free in all weather conditions without becoming stiff or cracking. The high-density PVC material ensures resistance to breakage during long-distance movement and stretching.
✓Easy and Safe for Low-Light Conditions：The built-in LED indicators on the 3 prong extension cord end make the heavy duty extension cord simple to judge whether the power is turned on or not. The black extension cord is ideal for use in dark conditions, from overcast days to nighttime.
✓ETL Listed & Trusted Brand：25 ft extension cord with multiple outlets is ETL certified. We stand behind our extension cord splitter with a 3-year replacement and return guarantee, along with free lifetime technical support. Count on our 3 plug extension cord to ensure the safety of your equipment.

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20% Discount

PLUGTUL Outdoor Extension Cord 25 FT Waterproof, 16/3 Gauge Black Heavy Duty 3 Prong Extension Cord, 13A 1625W SJTW, ETL Listed, Great for Garden and Home

PLUGTUL Outdoor Extension Cord 25 FT Waterproof, 16/3 Gauge Black Heavy Duty 3 Prong Extension Cord, 13A 1625W SJTW, ETL Listed, Great for Garden and Home

✓💡【Specification】 Outdoor extension cord 25ft, 16 gauge with 3 pure copper wire conductors 125V, 13Amp, 1625watts, male plug NEMA5-15P, female plug NEMA5-15R, SJTW cord, ETL listed. (The cross-sectional area of a 16 AWG cord is approximately 1.31 mm²)
✓💡【Protection】 Weather-resistant flexible PVC jacket protects power cords from rain, sunlight and abrasion.
✓💡【Robust & Flexible】 With reinforced nickel-plated brass blades to prevent bending or accidental breakage and are corrosion resistant. The flexible cord bends well to suit a variety of situations.
✓💡【Multipurpose】 All Purpose extension cord for Indoor and Outdoor use. Perfect for holiday and backyard lighting, lawn and garden equipment, bug zappers and other power tools.
✓💡【What you get】 25ft black extension cord with a hook-and-loop fastener strips helps you repack and recycle the extension cord when not in use. A friendly and reliable customer service will get back to you within 24 hours.

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24% Discount

12/3 25 FT Heavy Duty Outdoor Extension Cord Waterproof with Lighted End,Black 12 Gauge Extension Cord Flexible and Cold Resistant 3 Prong Grounded Plug,15Amp 1875W SJTW ETL Listed

12/3 25 FT Heavy Duty Outdoor Extension Cord Waterproof with Lighted End,Black 12 Gauge Extension Cord Flexible and Cold Resistant 3 Prong Grounded Plug,15Amp 1875W SJTW ETL Listed

✓Product Specification：12/3 25 ft extension cord; outdoor extension cord power 15Amp 1875W; 12 gauge extension cord plug model 5-15P/R;temperature range: -58°F to +158°F; 25ft extension cord ETL/cETL certified; heavy duty extension cord is a great peace of mind for power tools, gardening equipment and outdoor lighting
✓Durable Design：Heavy duty extension cord feature strain relief and hookup designs; outdoor extension cord use high-quality pure copper conductors for safe and stable extension cord outdoor use; 25 foot extension cord have non-slip sockets designed for easy plugging and unplugging and to maintain a strong connection
✓Quality Materials：12 gauge extension cord is made of polyethylene sheath; extension cord passes more than 2,000 times of harsh bending test; it is not easy to break; 25ft extension cord can effectively prevent damage from pulling; outdoor extension cord is waterproof and anti-corrosion shell, so that you can be safe and fixed to use it in the construction sites, gardens, garages and other humid environments
✓Durable & Flexible：Heavy duty extension cord is made of thickened PVC material; 25ft extension cord is stretch-resistant, anti-abrasive, adapting to the complex terrain dragging; 25 ft extension cord outdoor in the cold and hot still maintain the flexibility and conductive stability, to solve the problem of ordinary extension cord are easy to harden and crack, to provide reliable electric power support for outdoor products
✓Safe & Reliable: 12 gauge extension cord 25 ft; black extension cord is equipped with power indicator light design; the power on status can be seen at a glance; waterproof extension cord Indicator is embedded with a waterproof structure, even in rain or snow; it can clearly show the energized status; which is ideal for your 12 gauge extension cord

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7% Discount

POWGRN 25 Ft 10/3 Black Outdoor Extension Cord Waterproof Heavy Duty 10 Gauge 3 Prong, Flexible Cold-Resistant Power Cord Indoor & Outside with Lighted Indicator End, 15Amp 1875W SJTW ETL Listed

POWGRN 25 Ft 10/3 Black Outdoor Extension Cord Waterproof Heavy Duty 10 Gauge 3 Prong, Flexible Cold-Resistant Power Cord Indoor & Outside with Lighted Indicator End, 15Amp 1875W SJTW ETL Listed

✓Extra Heavy Duty: Black outdoor extension cord waterproof 25ft 10 gauge, 15 amp, 125 volts, 1875watts, male power plug NEMA 5-15P, female power socket NEMA 5-15R, SJTW power cord; ETL, cETL listed, heavy duty extension cord 25 ft is perfect for any heavy duty use, circular saws, string lights, block heater, lawn mowers, gardening, landscaping, construction site, welding work, or powering major appliances
✓Lighted End & Safe to Use: LED indicator lights up when 25 ft 10 gauge extension cord outdoor powered, bright PVC jacket color makes this power cord extension easily visible outdoor and indoor, avoid tripping in dark work environment; Each outdoor extension cord 25 ft waterproof 10/3 passed 1500V high voltage test to keep your appliance in safe
✓Weather-proof & Flexible: Extension cords jacket is wear-resistant and durable, 3 prong 25 foot outdoor extension cord is IP65 waterproof, weather-resistant, heat-resistant 158°F, corrosion-resistant, flexible vinyl indoor 25 ft extension cord will keep flexible at -58°F and easy re-pack after using
✓Durable & Strain Relief Design: Appliance extension cord plug and socket end have a strain relief design, they have undergone more than 20000 bending tests, even if the appliance extension cord is bent at the maximum angle, it will not break, so the service life is extended and the use is safer; The side of plug and socket are designed with anti-skid lines, which is easy to pull out or insert
✓Reliability: Package contains 25 foot extension cord and storage straps with carrying handle, friendly and reliable customer service will respond to you within 24 hours

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PlugSaf 14/3 Gauge Black Outdoor Extension Cord 25 ft Waterproof with Lighted Indicator, Cold Weatherproof -40°C, Flexible 3 Prong Extension Cord Outside, 15A 1875W 14AWG SJTW, ETL Listed

PlugSaf 14/3 Gauge Black Outdoor Extension Cord 25 ft Waterproof with Lighted Indicator, Cold Weatherproof -40°C, Flexible 3 Prong Extension Cord Outside, 15A 1875W 14AWG SJTW, ETL Listed

✓Specification: Black Outdoor extension cord 25 ft 14 gauge,15 amp, 125 volts, 1875watts, male plug nema 5-15p; female plug nema 5-15r; SJTW cord; ETL/cETL listed 25 ft extension cord outdoor
✓Weather-proof & Flexible: Black extension cord 25 ft jacket is wear-resistant and durable; 3 prong extension cord 25 foot outdoor is IP65 waterproof; weather-resistant; heat-resistant (100°C); corrosion-resistant; flexible vinyl power cord extension 25 feet will keep flexible at -40°C and easy re-pack after using
✓Safe to Use: The power socket indicator light shows that power is on and the extra long extension cord 25ft is ready for work; plug and socket have a long durable strain relief; it pass more than 20000 times bending without breaking; each power extension cord oudoor 14/3 passed 1500V high voltage test to keep your appliance in safe
✓Multipurpose: All purpose 25 foot extension cord 14AWG for indoor and outdoor use; this three prong outdoor extension cord 25 ft waterproof is ideal for landscaping, gardening and powering appliances such as weed wacker, bush trimmer, leaf blower, electric lawn mower and Christmas string lights; each outdoor extension cord has storage straps packing and is easy to repack and recycle after use; not bundle the outdoor extension cord 25ft together when use them will be safer
✓Reliability: You will get 25ft extension cord and storage straps packing; 24 hours friendly and reliable customer service

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Go Green Power Inc. GG-13825BK - 14/3 SJTW Outdoor Extension Cord, Black, 25 ft

Go Green Power Inc. GG-13825BK - 14/3 SJTW Outdoor Extension Cord, Black, 25 ft

Power By GoGreen

✓Extension Cord: The GoGreen Power (GG-13825BK) is a contractor grade 14/3 SJTW extension cord. This item SHOULD NOT be used with an EV Charger.
✓25 Foot Extension Cord: This powerful extension cord is 25 feet long. It is also moisture resistant, abrasion resistant, and durable, even with prolonged exposure to sunlight!
✓Molded Plug Extension Cord: The heavy duty extension cord has molded plugs which gives it a sturdy build and makes it easy to use.
✓Outdoor Extension Cable: The cable is recommended for use with heavy duty equipment and tools, with a maximum of 15 amps, 1875 watts.
✓Size and Other Details: This 14/3 SJTW cable is ETL listed and meets all industry standards. Go Green and follow the instructions located on the products package for recycling. Product manufactured in China and Vietnam
✓Recommended for Heavty Duty Equipment and Tools
✓Contractor grade
✓ETL Listed Certified

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30% Discount

HUANCHAIN Indoor Outdoor Black Extension Cord 25 ft 2 Pack Waterproof, 16/3 Gauge Flexible Cold-Resistant Appliance Cable Outside, 13A 1625W 16AWG SJTW, 3 Prong Heavy Duty Electric Cord, ETL

HUANCHAIN Indoor Outdoor Black Extension Cord 25 ft 2 Pack Waterproof, 16/3 Gauge Flexible Cold-Resistant Appliance Cable Outside, 13A 1625W 16AWG SJTW, 3 Prong Heavy Duty Electric Cord, ETL

✓Extra Size for Safety: Extra size Male NEMA 5-15P power plug and Female NEMA 5-15R power socket for safety; It is thicker and more durable than the normal type on market and has high insulation safety performance to prevent electric shock; ETL/cETL Listed for safe approval
✓Power Rating and Application: 3 Prong black extension cord 25 Feet 16AWG SJTW power outside extension cord rating 13Amps 1625Watts; Flame resistant, Waterproof Weather resistant, Cold-resistant (-50°C), corrosion resistant Suitable for indoor and outdoor, home office use extension cable
✓High Flexible & Easy to Use: HUANCHAIN high flexible Vinyl extension cable cords have better bending resistance and prevent them from breaking during long-term movement, bending, and pulling; Super soft feel, easy to unfold when used; Each outdoor extension cord has storage straps packing and is easy to repack and recycle after use
✓Hook & Strain Relief Design: The plug and socket end have a strain relief design, which is not easy to break when bent and used; The socket has a hook design, which is easy to plug and unplug and can be hung in a humid environment, making it safer to use
✓What You Get: Outdoor Black extension cord 25 ft 2 Pack; Free Friendly and reliable customer service will respond to you within 24 hours

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25ft 10/3 Gauge Outdoor Extension Cord Waterproof with Lighted Indicator,10 Gauge SJTW Heavy Duty 15Amp 1875W,3 Prong Cords Flexible Copper Black ETL Listed

25ft 10/3 Gauge Outdoor Extension Cord Waterproof with Lighted Indicator,10 Gauge SJTW Heavy Duty 15Amp 1875W,3 Prong Cords Flexible Copper Black ETL Listed

✓Specification: 3 prong 10 gauge extension cord 25 ft; 10 awg, 15amp, 125 volts, 1875 watts,male plug NEMA 5-15P, female plug NEMA 5-15R, SJTW cord, ETL, cETL listed 25 ft extension cord outdoor
✓Weather-proof & Flexible: Black extension cord 25 ft jacket is wear-resistant and durable; 3 prong extension cord 25 foot outdoor is IP65 waterproof, weather-resistant, heat-resistant 100°C, corrosion-resistant, flexible vinyl power cord extension 25 feet will keep flexible at -40°C and easy re-pack after using
✓Safe to Use: The power socket indicator light shows that power is on and the extra long extension cord 25 ft is ready for work; Plug and socket have a long durable strain relief; It pass more than 20000 times bending without breaking; Each power extension cord oudoor 10awg passed 1500v high voltage test to keep your appliance in safe
✓Multipurpose: Heavy duty extension cord outdoor is very suitable any outdoor gardening use; Such as electric lawn mowers, electrical equipment, and other household appliances; Each outdoor extension cord has storage straps packing and is easy to repack and recycle after use
✓What You Get: You will get 25 ft extension cord and storage straps packing; 24 hours response friendly and reliable customer service

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50% Discount

USEDOM IPX6 25 FT Outdoor Extension Cord Waterproof, 16/3 Gauge Black Heavy Duty Extension Cords, 10A 1250W SJTW, Waterproof Socket, 3 Prong Flat Plug Extension Cord with Weather Resistance

USEDOM IPX6 25 FT Outdoor Extension Cord Waterproof, 16/3 Gauge Black Heavy Duty Extension Cords, 10A 1250W SJTW, Waterproof Socket, 3 Prong Flat Plug Extension Cord with Weather Resistance

✓Specifications: Black extension cord, FCC/ETL Certification and UL Tested, 25FT, 16 AWG, 125V, 10Amp, 1250W, male plug NEMA 5-15P, female receptacle NEMA 5-15R, SJTW power cable.
✓IPX6 Waterproof: Extension cord socket meets the IPX6 waterproof rating. It can withstand spraying water and rain but cannot be fully submerged. The socket surface has 4 drainage holes; after use, please turn the socket upside down to shake out any water.
✓Shockproof Design: The socket features a shockproof design to prevent the plug from disconnecting when pulling the extension cord, so please insert the plug firmly.
✓Safety: The extention cord is composed of 3 thick copper wire cores, with each core containing 25 copper wires, capable of carrying larger currents without overheating. When the power exceeds 1250W/10A, the extension cable will automatically shut off to ensure safety.
✓Weather-resistant: The appliance extension cord casing is made of PC H2216 flame-retardant material, durable, and flame-resistant. It is suitable for temperatures ranging from -58℉ to 158℉, making it suitable for use in kitchens, bathrooms, and outdoors.

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PlugSaf Black Outdoor Extension Cord 25 ft 16/3 Gauge Waterproof, Cold Weatherproof -58°F, Flame Retardant, Flexible 3 Prong Heavy Duty Electric Cord for Lawn Office,13A 1625W 16AWG SJTW, ETL Listed

PlugSaf Black Outdoor Extension Cord 25 ft 16/3 Gauge Waterproof, Cold Weatherproof -58°F, Flame Retardant, Flexible 3 Prong Heavy Duty Electric Cord for Lawn Office,13A 1625W 16AWG SJTW, ETL Listed

✓Specification: Black Outdoor extension cord 25 ft 16 gauge,13 amp, 125 volts, 1625watts, male plug NEMA 5-15P, female plug NEMA 5-15R, SJTW cord, ETL/cETL listed heavy duty extension cord 25 ft
✓Weather-proof & Flexible: Long black extension cord 25 ft jacket is wear-resistant and durable, 3 prong extension cord 25 feet outdoor is IP65 waterproof, weather-resistant, heat-resistant (158°F), corrosion-resistant, flexible vinyl power cord extension 25 foot will keep flexible at -58°F and easy re-pack after using
✓Safety to Use: Plug and socket have a long durable strain relief, it pass more than 20000 times bending without breaking; Each power extension cord oudoor 16/3 passed 1500V high voltage test to keep your appliance in safe
✓Multipurpose: All purpose 25 foot extension cord 16AWG for indoor and outdoor use; This three prong outdoor extension cord 25 ft waterproof is ideal for landscaping, gardening and powering appliances such as weed wacker, bush trimmer, leaf blower, electric lawn mower, Christmas string lights and office appliance
✓ETL Listed: 25 feet, 16AWG, 125V, 13A max wires are certified by ETL; If you have any questions, our customer support team will also address your concerns within twelve hours

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