How Often Should You Inspect an Extension Cord?

Extension cords allow electronic devices to be powered in locations where a direct connection of the device into the outlet is not possible, which is why they come in handy in backyards, outdoor gardens, homes and construction sites.

However, depending on environments that extension cords are being used at they can be susceptible to damage from external objects and pose a potential electric and fire hazard.

If you use an extension cord, regular inspection is paramount for safety. OSHA recommends thoroughly checking electrical cords for any visible defects before each use.

This article covers the ins and outs of safety protocols associated with extension cords. We discuss how often you should inspect the extension cord, and provide a checklist of things you need to look for during inspection and maintenance.

What is the Average Lifespan of Extension Cords?

To get an idea of how often you should inspect an extension cord, it is crucial to know what the average lifespan of the wire is.

How long an extension cord lasts really depends on its usage frequency, the weather conditions, and of course, its quality. 

If you overuse or misuse the wire, it will likely get damaged sooner. Similarly, if you live in hot or humid weather, the moisture can gradually destroy the insulation on the cord and once it's frayed, you will need to replace the cord. 

Generally, industry experts recommend replacing power cords every 3 to 5 years. Having said that, these cords are made of different materials, including plastic coats, rubber insulators, and metal wires, that, if harmed, pose a high risk of electrocution and fire breakouts. 

Regular inspection is vital to ensure the cord is functional, well-maintained, and safe to use. 

What are the Extension Cord Safety Hazards?

Did you know that almost 4,000 injuries reported in emergency rooms each year result from extension cords?

The extension cord has many associated safety hazards, and if you use the wire, you will need to be aware of the potential danger. 

Here are some of the extension cord safety hazards:

• Fire Hazard: One of the most important reasons extension cords are dangerous is that they heat up quickly. This is why if the cord is covered within a wall, or under a piece of furniture, the trapped heat can quickly lead to a fire breakout.
• Electrocution Hazard: Broken wires, frayed insulation, or exposure to moisture, can all lead to short circuits and electric shocks. 
• Trip Hazard: Extension cords left on the floor can cause trips and falls, leading to injuries such as fractures and lacerations.
• Overloading Hazard: Plugging too many devices into one extension cord can cause overheating and potentially lead to fires. Always check the cord's amperage rating and avoid overloading it.
• Damage from Pests: Rodents and other pests can chew on extension cords, damaging the insulation and exposing the wires, which can result in short circuits or fires.
• Mechanical Damage: Heavy objects placed on or moved over cords can crush the insulation and wires inside, leading to electrical faults and potential hazards.

How to Inspect Extension Cords?

Here’s a step-by-step guide on appropriate inspection of extension cord:

• Start by examining your power cord's plug. Make sure it is not broken, bent, or loose. Then gently bend the cord and inspect the entire length of the wire checking for cuts, nicks, or abrasions. 
• Check the connectors, and ensure that the prongs, ground pins, and housings are intact and securely attached. 
• Assess for any obvious signs of overheating, such as discoloration or characteristic melted smell from the insulation.
• Evaluate if moisture or dirt is collecting on the wire. This is important to prevent short circuits. 
• Look at the gauge rating of the cord and make sure it is capable of handling the devices connected to it. For example, a 10 or 12 gauge wire is generally made for heavy-duty applications that need high amperage. On the other hand, an 8 gauge extension cord can only handle 50 amps and is therefore perfect for light tasks. 
• Always remember to test the cord. Plug and test it with a known working device to see if it operates correctly. 

How to Maintain Extension Cords?

Proper maintenance of extension cords is essential for ensuring their longevity and safety.

If you regularly use extension cords, here are some key tips that you will find useful:

• Storage: Store extension cords indoors in a cool, dry place. Avoid coiling them tightly, as this can damage the wires. Use a cord reel or wrap them loosely to prevent kinks and twists.
• Protection: Keep cords away from high-traffic areas to reduce wear and tear. Avoid running them under rugs or furniture where they can overheat or become damaged. If used outdoors, ensure they are rated for outdoor use and protected from water exposure.
• Regular Cleaning: Clean cords regularly to remove dust, dirt, and debris. Wipe them down with a dry cloth and check for any signs of moisture or damage.
• Avoid Overloading: Do not plug too many devices into one extension cord. Check the cord's amperage rating and ensure it matches the requirements of the connected devices.
• Inspect Before Use: Always inspect the cord before each use for any visible signs of wear, damage, or defects. Pay special attention to the plug, connectors, and insulation.
• Proper Usage: Use extension cords only for their intended purpose. Avoid using them as permanent wiring solutions, and unplug them when not in use to prevent overheating and reduce fire risk.

Final Words

Regular inspection of extension cords before each use is crucial for safety. By checking for defects, and signs of overheating, and ensuring proper gauge ratings, you can prevent hazards like electrocution, fires, and tripping.

In addition to correct usage and maintenance, quality also matters greatly when it comes to extension cords. Naturally, investing in power cords made of durable materials reduces associated risks, enhancing both safety and longevity. 

So, always prioritize your safety - inspect electric cords regularly, maintain them properly, and choose only top-notch and reliable extension wires. 

Frequently Asked Questions 

How to test an extension cord?

A continuity tester is a great way to test an extension cord. 

Here's how you can put it to use:

• Unplug the Cord: Ensure the extension cord is unplugged from any power source.
• Prepare the Tester: Turn on the continuity tester and set it to the appropriate setting, usually marked as a sound wave or a diode symbol.
• Test Each Prong: Touch one probe of the tester to one prong of the plug and the other probe to the corresponding slot on the opposite end of the cord. A continuous beep or light indicates a good connection.
• Check Ground Connection: Repeat the process with the ground pin and its corresponding terminal. Ensure there is continuity for safety.
• Inspect for Shorts: Test each prong against the other prongs and the ground pin to ensure there are no shorts.

What are the signs of damaged extension cords?

Here are some of the signs that indicate your extension cord is no longer good to use:

• Broken or damaged wires
• Frayed insulation
• Discolored insulation or wire
• Loose plugs
• Exposed wires
• General wear and tear