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10 Best Long Extension Cords 2025 in the United States

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Our Top Picks

#1

Winner

Amazon Basics Extension Cord, 13 Amps, 125V, 20 Foot, White

Rating
9.7
Chosen by1,343
Length
Indoor vs. Outdoor Use

Most important from
56945 reviews

Length
Ideal length options cater to various setups, from home to office.
Indoor vs. Outdoor Use
The cord works well for power tools and shop vacs in the garage.

The Amazon Basics Power Extension Cord is a solid choice if you need a 20-foot extension for indoor use. Rated at 13 amps and 125 volts, it can handle most household electronics and tools effectively. The 16 AWG gauge ensures a decent balance between flexibility and power capacity, although it may not be suitable for heavy-duty appliances that require a lower gauge (thicker wire).

It has a standard 3-prong plug, making it compatible with virtually any device that uses a 2- or 3-prong plug. Safety features are basic but adequate for indoor use, with no additional protection like surge protection or water resistance, making it unsuitable for outdoor environments.

It features one outlet, so if you need multiple outlets, you might need a different product or an additional power strip. With a high customer rating and best seller rank, this extension cord is well-received and reliable for most indoor applications.

Rating
9.7
Chosen by1,343
Length
Indoor vs. Outdoor Use

Most important from
56945 reviews

Length
Ideal length options cater to various setups, from home to office.
Indoor vs. Outdoor Use
The cord works well for power tools and shop vacs in the garage.
#3

DEWENWILS Outdoor Extension Cord, 50ft Long Power Cord, 16 AWG 3 Prong Heavy Duty, ETL Listed, 2 Pack (Black)

Rating
9.2
Length
Indoor vs. Outdoor Use
Plug Type

Most important from
5609 reviews

Length
Works well for short-distance needs, such as connecting crockpots to outlets.
Indoor vs. Outdoor Use
Perfect length and well-made for outdoor use, performing flawlessly throughout the season.
Plug Type
The three-prong plug fits perfectly into a two-prong timer, adding to its versatility.

The DEWENWILS Outdoor Extension Cord is a versatile product ideal for both indoor and outdoor use, extending up to 50 feet in length. This makes it suitable for reaching distant outlets and navigating around furniture. The cord is constructed from 16 gauge (AWG) wire, which is robust enough for most household and light outdoor appliances. It has a 13-amp rating, supporting up to 1625 watts, making it compatible with a variety of devices such as lamps, computers, and patio lights.

Its weatherproof design, complete with a PVC jacket, ensures protection against moisture, abrasion, and sunlight, which is particularly useful for outdoor applications in various weather conditions. However, users should ensure that connections are not submerged in water to maintain safety. The three-prong plug enhances compatibility and safety, and the cord features reinforced blades to resist wear and tear.

The DEWENWILS extension cord is ETL listed, indicating it meets high safety standards. An added benefit is the cost-effective 2-pack offer, making it a practical purchase for multiple usage scenarios. Its relatively thicker 16 AWG wire may be less flexible compared to thinner gauge cords, and it offers a single outlet per cord, which might require additional power strips if more outlets are necessary. Nevertheless, it is generally well-regarded for its durability and performance.

Rating
9.2
Length
Indoor vs. Outdoor Use
Plug Type

Most important from
5609 reviews

Length
Works well for short-distance needs, such as connecting crockpots to outlets.
Indoor vs. Outdoor Use
Perfect length and well-made for outdoor use, performing flawlessly throughout the season.
Plug Type
The three-prong plug fits perfectly into a two-prong timer, adding to its versatility.

Buying Guide for the Best Long Extension Cords

Choosing the right long extension cord is crucial for ensuring safety and efficiency in powering your devices. Whether you need it for indoor or outdoor use, understanding the key specifications will help you make an informed decision. Here are the main factors to consider when selecting a long extension cord.
LengthThe length of an extension cord determines how far it can reach from the power source to your device. This is important because using a cord that is too short may require additional cords, which can be unsafe. Extension cords come in various lengths, typically ranging from 6 feet to 100 feet. For indoor use, a shorter cord (6-25 feet) is usually sufficient, while outdoor tasks may require longer cords (50-100 feet). Choose a length that comfortably reaches your devices without excessive slack.
Gauge (AWG)The gauge of an extension cord refers to the thickness of the wire inside it, measured in American Wire Gauge (AWG). This is important because a lower gauge number indicates a thicker wire, which can handle more electrical current. Common gauges for extension cords are 16, 14, and 12 AWG. For light-duty tasks like powering small appliances, a 16 AWG cord is adequate. For medium-duty tasks like running power tools, a 14 AWG cord is better. For heavy-duty tasks like operating large equipment, a 12 AWG cord is recommended. Choose the gauge based on the power requirements of your devices.
Amperage RatingThe amperage rating indicates the maximum amount of electrical current the extension cord can safely handle. This is important to prevent overheating and potential fire hazards. Extension cords typically have ratings of 10, 13, or 15 amps. Check the power requirements of your devices and ensure the cord's amperage rating meets or exceeds those needs. For example, if your device requires 10 amps, use a cord rated for at least 10 amps.
Indoor vs. Outdoor UseExtension cords are designed for either indoor or outdoor use, and this distinction is important for safety and durability. Indoor cords are usually lighter and less durable, while outdoor cords are made with tougher insulation to withstand weather conditions. Outdoor cords are often marked with a 'W' on the packaging. If you need a cord for outdoor use, ensure it is rated for outdoor conditions to prevent damage and ensure safety.
Plug TypeThe plug type of an extension cord can vary, with some having standard two-prong plugs and others having three-prong grounded plugs. This is important for compatibility with your devices and for safety. Three-prong plugs provide grounding, which is essential for preventing electrical shocks. If your devices have three-prong plugs, use a grounded extension cord. For devices with two-prong plugs, a standard two-prong cord will suffice.
Number of OutletsSome extension cords come with multiple outlets, allowing you to power several devices at once. This is important for convenience and reducing the need for multiple cords. If you need to power multiple devices, choose a cord with the appropriate number of outlets. However, be mindful not to exceed the cord's total amperage rating when using multiple devices simultaneously.
Safety FeaturesSafety features such as surge protection, built-in circuit breakers, and childproof covers are important for preventing electrical hazards. Surge protection helps protect your devices from power spikes, while circuit breakers can prevent overheating. Childproof covers are essential if you have young children. Consider these features based on your specific needs and environment to enhance safety.

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