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How Do Extension Cords Work?

Chloe Bennett • • 7 min read
How Do Extension Cords Work?
An extension cord essentially is a bundle of insulated electrical wires with a plug on each end. Electrical current flowing through wires generates heat, and when too much current flows through a wire, it can overheat and melt the plastic insulation of the wires, causing short circuits and fires.

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Keeping this in consideration, can you use an extension cord permanently?

3 Answers. Extension cords that are not listed, labeled, or rated for permanent (long term) use are all temporary wiring devices. If you need to permanently connect an electrical device, you should use approved wires and/or cable assemblies installed in an approved manner.

Beside above, how long can you run an extension cord? 100 feet

Furthermore, can you plug an extension cord into an extension cord?

Again, technically you can, but it's not recommended, as it's considered a fire hazard. When you start to add on extension cords, you run the risk of making the run too long and under-powering your devices—not safe.

When should you not use an extension cord?

Do not substitute extension cords for permanent wiring. Do not run through walls, doorways, ceilings or floors. If cord is covered, heat cannot escape, which may result in a fire hazard. Do not use an extension cord for more than one appliance.

Related Question Answers

What happens if an extension cord gets wet?

Answers. The plug end is easier to dry out than the socket end… get out your blow-dryer and set it to high and blow the end that got wet for a while. That will get most of the water off/out of it, and heating it up like that will help it evaporate the rest.

Are power strips safer than extension cords?

In fact, plugging multiple power strips together, which is known as “daisy-chaining,” is the quickest way to overload your electrical system—and it's also dangerous and violates most fire safety codes. For the same reason, avoid the use of extension cords with power strips.
Chloe Bennett
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Chloe Bennett

Chloe Bennett explores the intersection of pop culture, streaming entertainment, digital trends, and contemporary lifestyle. Her weekly commentary reaches thousands of culture enthusiasts.