Does The Length Of An Extension Cord Affect The Power?

An electrical extension cord is an ideal way to elongate multiple circuits to spaces you are operating on, away from static outlets. But why do we need one in the first place? It might be because of extended electrical operations. Besides, sometimes you only require a small cord to plug in your appliances, tools, and equipment and conclude the assignment.

Having said that, we have been a part of a situation wherein we have had to rope several extension cords to reach a specific area. In this case, how many cords can you thread together and still not compromise on the amount of power produced? Numerous factors determine an extension cord’s safety, potency, and usability. Both outdoor and indoor extension cords vary in size, power usage, and many more.

How are extension cords used?

Outdoor electrical cords are a significant part of the backyard landscape, energizing anything from hedge trimmers to kitchen mixers, power saws, and even lawnmowers. On the other hand, the indoor ones are utilized for temporary power requirements from attics to basements. Since these equipment and tools comprise various power ratings, they are manufactured to maneuver many forms and types of temporary operating needs.

However, not every extension cord is designed equal. An inadequately sized cord can lead to the burning of motors and tools if granted more running duration. Moreover, such a situation can result in overheating or otherwise hazardous circumstances.

How can you avoid these issues?

First, it helps to understand how much current (in amps or amperes) every electrical tool needs. Tools such as mowers and saws use relatively higher amps. Consequently, cords associated with considerable electrical loads must be utilized to operate them. In addition, their respective manuals specify extension cord needs for proper equipment operation. You can even check the amperage ratings on the tool.

However, how does a user know the amount of electrical burden the extension cord will manipulate? Well, there are a couple of factors, like cord thickness and length. The thicker its copper wire, the more electricity the wire can accommodate. But, since mediated power declines over specific sizes, a more extended cord needs a ponderous wire to produce a full current rating.

In addition, there are other factors to examine as well.

• How far is the electrical outlet from the circuit breaker you’re connecting to?
• What’s the size of the circuit breaker you’re connected to?
• What’s the size of your wiring that feeds the outlet?

1. Voltage Drop

Often, a user does not require the cord size compared to the run’s length. They simply tend to get any or all extension cord sizes and place them in conjunction. Meanwhile, have you come to terms with resistance caused by extended runs of wire? While copper wise is an excellent conductor, it promotes resistance that leads to heat. Heat damages not only the extension cord but also the connected appliances. Eventually, the voltage drops and heats the inbuilt motor of your tools. In this case, you could utilize a power cord to multiply the number of electrical outlets through a single source.

On the other hand, when you operate a tool, such as a drill machine, and it runs slower than usual, consider it a warning sign. While some machines come with warning lights, others must be dealt with by thoroughly checking their manuals. More often, owning the best extension cord to reach the space you intend to operate can resolve a situation or two. However, they should never be used in extended runs and for heavy-load machinery types, such as compressors and sump pumps.

2. More About Resistance

Apart from voltage drops, resistance can lead to heat production. The longer you use the cord, the more heat your wire will produce. Suppose you throw a long extension through the yard or underneath the rug. In that case, the cord can get hot enough to set alight. The possibility of this occurring escalates if the cord has any damage in its length.

3. Extended Cords Are More Likely to Get Damaged

In its journey from the plug to your appliance or equipment, a long cord has to cross various places where it can invite damage. Such areas consist of walkways, driveways, basements, underneath doors, and crawl spaces. In addition, extension cords that pass through a window down towards the ground can also promote damage. Even small gouges and nicks that expose the wires are dangerous. As a result, choose a cord wisely.

Extension Cord Usage Chart

The bottom line

While the length of the cord does matter, it’s essential to understand that as the current flows, it loses some voltage. This can lead to the drill running slower, lights being dimmer, etc. What’s essential is the cord’s length, the gauge of the wire, and the current draw of what you’re plugging into the extension cord.