How to choose the best extension cord

best extension cords

If you are searching for the best extension cords for your needs then buying online is the way to go. If you can wait a day or two for shipping, you’ll find better quality and lower cost extension cords than you would be able to at local hardware stores. In this article we will be showing you how to find and purchase your ideal extension cord for your individual needs. 

Whether you are a construction worker, DIY expert or just need a cord for your treadmill you’ll want to ensure you have the correct length, power, and gauge. When choosing colors make sure to have one with bright colors so it’s easy to see as well as choosing a cord like our Pro Lock that has a locking connector so you don’t have to worry about it coming unplugged. 


Buy Longer Extension Cords

It’s always best to purchase an extension cord that is longer than you expect to leave yourself extra room just in case. Having longer cords is more convenient and you don’t want to run into a situation where you are barely reaching your plug. Additionally, it’s not safe to have an extension cord stretched to its farthest length because people could trip over it and it may come unplugged more often. 

Not having the right length for your cords can also result in lower power. Having added resistance can cause your equipment like saws, drills, and treadmills to have voltage drops in power. Even if you don’t care about the safety risks and opt for the cheaper and shorter cords there’s another reason you may want to consider getting a longer cord. If you get a longer cord it means you are less likely to need to buy another extension cord on your next project.


Pro Locking Cords

If you want a cord that doesn’t come unplugged and locks, than you may be interested in our pro lock extension cords. These cords are 12/3 AWG locking which contains 65 strands of 30AWG 100% copper wire, they are awesome! 

To unlock your extension cable, just pull back on the collar and remove your plug. They will hold up to 80 lbs of pull resistance and will take any beating you throw their way. These are flexible, can withstand any conditions and work for virtually any project.


Thicker Extension Cords More Power

After choosing your length you’ll need to take a look at the thickness of the wires inside your extension cord. This will help you determine how much power it can safely carry. 

If you are running an entire construction site or just need a cord for your powerful treadmill you’ll need to pick out a thicker cord. Buying the minimum extension cord will work for things like battery’s, chargers or stereos but they won’t be able to keep up with bigger tools and projects.

Recommended wire gauge for extension cords

Cord length

What thickness you need

25 feet

14/3 (14 AWG)

50 feet

12/3 (12 AWG)

100 feet

10/3 (10 AWG)


In the United States your cord thickness is generally listed in terms of gauge, or AWG. When using our “build your own cord” builder on our website you’ll be able to choose your ideal gauge for your project. We recommend choosing a cord 14 AWG or above for longer cords and at lengths of only 25 feet or shorter you can pick out the thicker 10 AWG which is the thickest gauge you’ll need. Take a look at the table above when building your extension cord on our website.


Cold Weather Extension Cords More Flexible

Some extension cords are more flexible than others, and if this is what you are looking for then we recommend choosing a cold weather extension cord. Having a flexible cord it will be much easier to stretch out across your workspace, easier to coil and will be less frustrating in tight spaces. 

Look for extension cords that list temperatures below freezing because they will generally be more flexible at any temperature.


Purchase Your Extension Cord Today!

If you are ready to start shopping for your extension cord you can head to our homepage and start building your own cord. We will provide you with free custom engraving as well as free shipping on any order above $99. You can choose from our variety of cords below;


  • Industrial Grade Extension Cords
  • Locking Extension Cords
  • Cold Weather
  • General Purpose
  • GFCI Protected
  • Multi-Outlet
  • A/V & Special Event
  • Temporary Power
  • Welder
  • Flat - Low Profile
  • Generator
  • RV & Motorhome

We feature a complete line of heavy duty extension cords. Whether you need lighted cords or flat cords or locking cords or extension cords for the extreme cold, we’ve got you covered! Use our handy configurator to select the ones that are right for you.

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