The Best Practices for Using Extension Cords Safely and Effectively

Extension cords serve as a convenient solution for powering appliances and electronics, especially when outlets are out of reach. However, it's crucial to understand the best practices for using extension cords to ensure both safety and optimal performance. In this blog post, we will explore how to best use extension cords and provide guidance on which appliances should not be used with them.

Choosing the Right Extension Cord

Selecting the appropriate extension cord for your needs is the first step in ensuring safe and efficient usage. Consider the following factors when choosing an extension cord:

Length and Gauge: Extension cords come in various lengths and wire gauges. When selecting a cord, choose one that is long enough to reach your desired outlet without excessive slack. Additionally, consider the gauge of the wire. Thicker gauges (lower gauge numbers) are suitable for heavy-duty appliances and longer distances.

Indoor or Outdoor Use: Determine whether the extension cord will be used indoors or outdoors. Outdoor-rated cords are designed to withstand moisture, sunlight, and other elements, ensuring durability and safety.

Amp Capacity: The amp capacity of an extension cord indicates the maximum amount of electrical current it can safely handle. Choose a cord with an amp capacity that matches or exceeds the requirements of the appliance or device you intend to use.

Safety Certification: Look for extension cords that have been tested and certified by recognized safety organizations, such as Conformité Européenne (CE). These certifications ensure that the cord meets specific safety standards.

Best Practices for Using Extension Cords

To make the most of your extension cord while maintaining safety, follow these best practices:

Inspect Regularly: Before each use, visually inspect the extension cord for any signs of damage, such as fraying or exposed wires. Discard damaged cords promptly to prevent potential hazards.

Avoid Overloading: Never overload an extension cord by plugging in multiple high-wattage appliances or devices. Check the amp capacity of the cord and ensure it can handle the total electrical load you plan to connect. If you need to power multiple devices, consider using a power strip with its own overload protection.

Uncoil Completely: Fully uncoil the extension cord before use to prevent overheating. Coiled cords generate more heat, leading to potential fire hazards or damaged insulation.

Do Not Run Under Rugs or Furniture: Avoid running extension cords under rugs, carpets, or furniture. This can cause overheating and increase the risk of fire. Instead, secure the cord to the floor or wall with appropriate clips or cord covers.

Keep Away from Moisture and Heat Sources: Extension cords should be kept away from water sources and areas with excessive heat. Moisture and heat can damage the cord and cause electrical hazards.

Appliances Not Suitable for Extension Cord Use

While extension cords are useful for various purposes, there are certain appliances that should not be connected to them:

Major Appliances: Refrain from using extension cords with major appliances such as refrigerators, washing machines, dryers, or air conditioners. These appliances often draw high power and require a direct, dedicated power source.

Heating Devices: It's best to avoid using extension cords with high-wattage heating devices like space heaters or electric blankets. These devices can generate significant heat, increasing the risk of overheating the cord and causing a fire.


Extension cords are a valuable tool for providing power to appliances and devices in hard-to-reach areas. By selecting the appropriate extension cord, following best practices, and understanding which appliances are incompatible with them, you can ensure both safety and optimal performance. Remember to inspect your cords regularly, avoid overloading, and never use them with major appliances or high-wattage heating devices. With proper usage, extension cords can be a reliable and convenient solution for your electrical needs.