Top 10 Best Heavy Duty Extension Cord Reviews & Buying Guide In 2022

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Our team studied on 34063 reviews available online for Heavy Duty Extension Cord, select the perfect ones and prepared Heavy Duty Extension Cord Reviews for you. It was very difficult to shortlist the ideal Heavy Duty Extension Cord from thousands of products online.

However, we tried to make sure that you get only the Best Heavy Duty Extension Cord from our suggestions.

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Best Heavy Duty Extension Cord
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Comparison Chart for Best Heavy Duty Extension Cord


We’ve scanned 34063 reviews for you. If you are looking for the Best Heavy Duty Extension Cord than this review article may help you.

NoProductScoreAction
110FT 12/3 Outdoor Extension Cord9.4Buy on Amazon
2Clear Power 50 ft Heavy Duty Outdoor Extension Cord 12/3 SJTW9.2Buy on Amazon
3FIRMERST 10 Feet 1875W Extension Cord Heavy Duty Low Profile White 15A UL Listed9.2Buy on Amazon
4#1 Best Quality Heavy Duty Extension Cord Wire9.2Buy on Amazon
5Southwire 2589 100-ft 12/3 SJTW Outdoor9.2Buy on Amazon
6Southwire 2588SW0002 Outdoor Cord-12/3 SJTW Heavy Duty 3 Prong Extension Cord-for Commercial Use (50', Yellow)9Buy on Amazon
7Clear Power 25 ft Heavy Duty Outdoor Extension Cord 12/3 SJTW8.8Buy on Amazon
8FIRMERST 1875W Heavy Duty Extension Cord 6 Feet 14 AWG 15A White8.8Buy on Amazon
9ReelWorks CR625201S3A Heavy Duty Extension Cord Reel With Swivel Bracket8.8Buy on Amazon
10Clear Power 100 ft Extra Heavy Duty Contractor Grade Extension Cord 12/3 SJTOW with 5 Outlet Adapter Combo8.4Buy on Amazon

Table Of Content:

1. 10FT 12/3 Outdoor Extension Cord

10FT 12/3 Outdoor Extension Cord, Heavy Duty 3-Outlet SJTW Indoor/Outdoor Three-Prong Power-Cord 12-Gauge Grounded 15-Amp 1875 WattsBuy on Amazon
  • High Quality – Our heavy-duty power cords are made with an SJTW thermoplastic which is suitable to temperatures from -40°F to 130°F.
  • 3-Outlet Extension Cord – Our extension cords feature not one but three outlets, each set at a different angle from one another.
  • Durable Extension Cord – Providing highest quality with a Sturdy Long-Lasting Construction, durable vinyl covering insulating and protecting the cord’s conducting wires, plus resists moisture, abrasion, and the damaging effects of sunlight, and resistant to extreme temperature which wll not crack or deteriorate.
  • Safety – UL certification offer quality assurance and includes a grounded plug for maximum safety.
  • Applicable for – These three-prong extension cords are suitable for indoor and outdoor use.

2. Clear Power 50 ft Heavy Duty Outdoor Extension Cord 12/3 SJTW

Clear Power 50 ft Heavy Duty Outdoor Extension Cord 12/3 SJTW, Yellow, Water & Weather Resistant Flame Retardant, 3 Prong Grounded Plug, DCOC-0145-DCBuy on Amazon
  • nickel coated brass blades won’t corrode which helps prevent arcing
  • Ideal for use with heavy duty power tools and appliances
  • Water, weather and abrasion resistant, flame retardant
  • Grounded plug and connector
  • stays flexible in temperatures from -40°F up to +140°F

3. FIRMERST 10 Feet 1875W Extension Cord Heavy Duty Low Profile White 15A UL Listed

FIRMERST 10 Feet 1875W Extension Cord Heavy Duty Low Profile White 15A UL ListedBuy on Amazon
  • 3×14 AWG,15Amp 125Volt ,1875 Watts ,UL&CUL Listed ,10 Feet White.
  • HEAVY DUTY, STURDY BUT FLEXIBLE: 14 AWG (15A) extension cords with thicker wire diameters, which can handle more amperage and thus more wattage, less chance of getting hot, is safer and more reliable compared with the thinner 16 AWG ones.
  • SPACE EFFICIENT: Convert your standard AC power cord to a slim flat plug, providing angular flexibility.
  • FLAT PLUG: Designed for tight spaces like behind furniture, bookshelves, desks or anything which is close to the wall not allowing you to use the standard outlet.
  • UL CERTIFIED: Cord 3x14AWG Rating 125V / 15A.

4. #1 Best Quality Heavy Duty Extension Cord Wire

#1 Best Quality Heavy Duty Extension Cord Wire, (3 FT) Ideal for Air Conditioner and Major ApplianceBuy on Amazon
  • Angle Plug Allows cord to remain flush to wall in tight spaces
  • Sturdy cord Ideal for plugging in large appliances such as washers, dryers, or refrigerators, power tools and other major appliances.
  • Grip grooves allow easy connection and disconnection of cord
  • 1875 Watts -15 Amps/14 Gauge/3 Conductor wire – SPT-3/125 Volt. ETL Listed
  • Heavy Duty vinyl Insulation, Color of cord may vary

5. Southwire 2589 100-ft 12/3 SJTW Outdoor

Southwire 2589 100-ft 12/3 SJTW Outdoor, Heavy Duty 3 Prong Power, Water Resistant Vinyl Jacket, for Commercial Use and Major Appliances Extension Cord, 100 ft, YellowBuy on Amazon
  • ALL PURPOSE EXTENSION CORD for Indoor and Outdoor use.
  • HIGHLY VISIBLE yellow jacket provides extra safety and will not mark floors or walls
  • WATER RESISTANT flexible vinyl jacket provides protection of the cord against moisture, abrasion, and sunlight.
  • REINFORCED BLADES add durability that protects prongs from bending and/or breaking
  • LIGHTED END indicates power is on

6. Southwire 2588SW0002 Outdoor Cord-12/3 SJTW Heavy Duty 3 Prong Extension Cord-for Commercial Use (50′, Yellow)

Southwire 2588SW0002 Outdoor Cord-12/3 SJTW Heavy Duty 3 Prong Extension Cord-for Commercial Use (50', Yellow), 50 FeetBuy on Amazon
  • ALL PURPOSE EXTENSION CORD for Indoor and Outdoor use.
  • HIGHLY VISIBLE yellow jacket provides extra safety and will not mark floors or walls
  • WATER RESISTANT: Flexible vinyl jacket provides protection of the cord against moisture, abrasion, and sunlight.
  • REINFORCED BLADES add durability that protects prongs from bending and/or breaking
  • LIGHTED END indicates power is on
  • UL Listed

7. Clear Power 25 ft Heavy Duty Outdoor Extension Cord 12/3 SJTW

Clear Power 25 ft Heavy Duty Outdoor Extension Cord 12/3 SJTW, Water & Weather Resistant, Flame Retardant, Yellow, 3 Prong Grounded Plug, CP10144Buy on Amazon
  • This 25 ft extension cord is ideal for use with heavy duty power tools and appliances, Grounded plug and connector.
  • Water resistant, weather resistant, abrasion resistant and flame retardant
  • Stays flexible in temperatures from -40°F up to 140°F
  • Nickel coated brass blades won’t corrode which helps prevent arcing
  • Agency tested and certified for use in the USA & Canada

8. FIRMERST 1875W Heavy Duty Extension Cord 6 Feet 14 AWG 15A White

FIRMERST 1875W Heavy Duty Extension Cord 6 Feet 14 AWG 15A White, UL ListedBuy on Amazon
  • 6 FEET WHITE EXTENSION CORD]: 3×14 AWG, 15Amp 125Volt, 1875 Watts, UL&CUL Listed, With Warning Label and Power(Wattage) Limit Label.
  • HEAVY DUTY & STURDY]: 14 Gauge (15A) extension cords with thicker wire diameters, which can handle more amperage and thus more wattage, less chance of getting hot, safer and more reliable compared with the thinner 16 AWG ones.
  • FLEXIBLE & EASY TO BEND]: Even if the cord is more thick than 16ga cord, it’s still soft, flexible and easy to fold.
  • UL/ETL CERTIFIED & Safety]: Marking on cord UL-Listed.
  • Warning]: Indoor use only / Not waterproof / Check the wattage and ampere limit before use.

9. ReelWorks CR625201S3A Heavy Duty Extension Cord Reel With Swivel Bracket

ReelWorks CR625201S3A Heavy Duty Extension Cord Reel With Swivel Bracket, 12AWG/3C SJT, Triple Tap, 65 ft.Buy on Amazon
  • SAFETY – This product helps making the workplace safe by keeping long electrical cords up and out of harm’s way.
  • EASY STORAGE – Tangle-free encased 12 Gauge SJT cord for easy winding & protection during storage.
  • DURABILITY/ EASY MOUNTING – This product is crafted with impact resistant polypropylene case.

10. Clear Power 100 ft Extra Heavy Duty Contractor Grade Extension Cord 12/3 SJTOW with 5 Outlet Adapter Combo

Clear Power 100 ft Extra Heavy Duty Contractor Grade Extension Cord 12/3 SJTOW with 5 Outlet Adapter Combo, Oil Water & Weather Resistant, Flame Retardant, Yellow, 3 Prong Grounded Plug, CPCO90001Buy on Amazon
  • All Purpose Extension Cord + Matching 5 Plug Outlet Set: Easily turns single outlet extension cord into 5 outlet extension cord, replaces bulky adaptor plugs to save space and keep extension cords organized.
  • Safe: Vinyl wire cover protects SJTOW wire from wear and tear and is oil resistant, corrosion resistant, water resistant, as well as flame retardant.
  • Made Durable for Extreme Weather Resistance: made for extreme temperatures from -58ºF up to 221ºF, wire remains flexible even in extreme cold conditions.
  • Lighted Socket: LED light indicates when power is on
  • Tested and Certified to USA and Canadian standards

Heavy Duty Extension Cord Buying Guide


Does the thought of finding a great Heavy Duty Extension Cord stress you out? Has your mind been juggling between choices when it comes to buying Heavy Duty Extension Cord in general, specifically regarding which model to choose?

If that’s the case, know that you’re not alone. Many people find it tough to buy the perfect Heavy Duty Extension Cord for themselves. We understand the stress associated with the buying process!

Since you’re here, you are obviously curious about Heavy Duty Extension Cord Reviews. You’ve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs.

There are many sources that’ll provide you with that information- buying guides or ratings websites, word-of-mouth testimonials from friends or family members, online forums where users share their personal experiences, product reviews specifically found all over the internet and YouTube channels. Only thorough research will ensure that you get the right product.

But that’s not always easy, right? That's why we've taken time to compile a list of the best Heavy Duty Extension Cord in today's market, on your behalf, so that there will be no more worries for you.

How did we come up with the list, you ask? How did we create this buying guide?

  • First, our algorithms collected as much information available about these products from trusted sources.
  • We employed both Artificial Intelligence and large data volume to validate all collected information.
  • Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Heavy Duty Extension Cord currently on the market!
The products aren’t chosen randomly. We consider several criteria before assembling a list. Some of the criteria are discussed below-

  1. Brand Value: What happens when you go for a not-so-reputable brand just because the price seems cheap? Well, the chance of getting a short-lasting product goes higher. That’s because the renowned brands have a reputation to maintain, others don’t. Top Heavy Duty Extension Cord brands try to offer some unique features that make them stand out in the crowd. Thus hopefully, you’ll find one ideal product or another in our list.
  1. Features: You don’t need heaps of features, but useful ones. We look at the features that matter and choose the top Heavy Duty Extension Cord based on that.
  2. Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products of higher specifications, but with the right balance.
  3. Customer Ratings: The hundreds of customers using the Heavy Duty Extension Cord before you won’t say wrong, would they? Better ratings mean better service experienced by a good number of people.
  4. Customer Reviews: Like ratings, customer reviews give you actual and trustworthy information, coming from real-world consumers about the Heavy Duty Extension Cord they used.
  5. Seller Rank: Now, this is interesting! You don’t just need a good Heavy Duty Extension Cord, you need a product that is trendy and growing in sales. It serves two objectives. Firstly, the growing number of users indicates the product is good. Secondly, the manufacturers will hopefully provide better quality and after-sales service because of that growing number.
  6. Value For The Money: They say you get what you pay for. Cheap isn’t always good. But that doesn’t mean splashing tons of money on a flashy but underserving product is good either. We try to measure how much value for the money you can get from your Heavy Duty Extension Cord before putting them on the list.
  7. Durability: Durability and reliability go hand to hand. A robust and durable Heavy Duty Extension Cord will serve you for months and years to come.
  8. Availability: Products come and go, new products take the place of the old ones. Probably some new features were added, some necessary modifications were done. What’s the point of using a supposedly good Heavy Duty Extension Cord if that’s no longer continued by the manufacturer? We try to feature products that are up-to-date and sold by at least one reliable seller, if not several.
  9. Negative Ratings: Yes, we take that into consideration too! When we pick the top rated Heavy Duty Extension Cord on the market, the products that got mostly negative ratings get filtered and discarded.

These are the criteria we have chosen our Heavy Duty Extension Cord on. Does our process stop there? Heck, no! The most important thing that you should know about us is, we're always updating our website to provide timely and relevant information.

Since reader satisfaction is our utmost priority, we have a final layer of filtration. And that is you, the reader! If you find any Heavy Duty Extension Cord featured here Incorrect, irrelevant, not up to the mark, or simply outdated, please let us know. Your feedback is always welcome and we’ll try to promptly correct our list as per your reasonable suggestion.

Learn more about Share A Review, and feel free to contact us if you need any specific information regarding a specific product or tools.

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