What is a Power Surge?

This article is your guide to answering the question of, what is a power surge. A power surge is a sudden and brief spike in electrical voltage that can damage electronic devices and appliances. Typically, these are caused by storms, grid overload, faulty wiring, etc. but can be scary and detrimental.

So, if you want to learn more about power surges, keep reading.

Here at The Energy Professor, we want to give you the information you need to not only save money on your energy bill but to also become more energy efficient. We hope find this post helpful and make it easier for you to know what a power surge is for 2024. Be sure to also check out our one-of-a-kind energy savings calculator!

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What is a Power Surge?

A power surge, also known as an electrical surge, is a surge of electrical power that exceeds normal levels. It occurs when an excessive amount of voltage flows through electrical wires and into connected devices. Although these surges are typically short-lived, lasting only a few microseconds, their impact can be considerable. They have the potential to cause significant damage to electronic devices and appliances connected to the circuit. The consequences of a power surge can range from minor glitches and errors to permanent, costly damage that necessitates repair or replacement. In severe cases, electrical surges can even pose a fire hazard. Therefore, understanding what a power surge is, how it occurs, and how to protect against it is crucial.

What are the Top Power Surge Causes?

#1 – Power Grid Switching

The cause of a power surge may originate from your utility company. The utility company may need to switch the supply of power to another source or temporarily interrupt the flow of power to its customers to aid in clearing a fault in the system. This is often the case in the event of a fallen tree limb or small animal causing a fault on the line. This switch may result in a voltage spike and power surge in your home.

#2 – Lightning

If lightning strikes your home’s electrical system, it can cause a sudden and powerful surge of electricity. This surge can quickly travel through your circuits and damage your electronic devices and appliances, even in just a fraction of a second.

While we can’t control lightning, it highlights the need to understand power surges and take steps to protect our valuable equipment. By being proactive, we can help safeguard our homes against these unexpected electrical events.

#3 – Electrical Overload

One of the most common power surge causes is electrical overload. Do you have too many appliances plugged into an outlet? Do you have extension cords all over your home? This is one of the leading causes of a power surge. Having too many appliances plugged in at one time can cause a massive spike in current due to the excessive power being drawn.

#4 – Power Outage

#5 – Wiring

If you find yourself wondering, “Why does my power keep surging?” it might be due to faulty wiring. It’s important to have an electrician inspect and fix any wiring issues in your home. Faulty wiring can cause power surges in several ways:

• Short circuits: When wires touch each other, it causes a sudden spike in current, leading to a surge.
• Ground faults: When a wire contacts a ground surface like a metal pipe, it can cause a sudden increase in current flow, resulting in a surge.
• Overloaded circuits: If too many devices are connected to a circuit, it can overload the wiring and cause a surge.
• Voltage spikes: Damaged wiring or issues with the electrical supply can cause sudden increases in voltage, leading to surges.

Getting these issues checked can help prevent power surges and protect your home.

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What are the Signs of a Power Surge in Home?

Power surges can cause significant damage to the electronics and appliances in your home, which can be both costly and frustrating. Knowing the signs of a power surge can help you take action to protect your home and avoid potential damage. Signs of a power surge include flickering lights, burnt or damaged outlets, tripped circuit breakers, malfunctioning electronics, and unexplained damage

#1 – Flickering Lights

One of the most common signs of a power surge is flickering lights. If you notice that your lights are flickering or dimming for no apparent reason, it could be a sign that your electrical system is experiencing voltage fluctuations. While this could be caused by a variety of issues, such as a damaged electrical service line, it is often a sign of a power surge.

#2 – Burnt or Damaged Outlets

If you notice that your electrical outlets appear burnt, or damaged or see smoke coming from the outlet, it could be a sign of a power surge. Power surges can cause electrical outlets to overheat, leading to damage or discoloration. You may also notice a power surge burning smell, this can be a serious hazard and should be addressed immediately by a qualified electrician.

#3 – Tripped Circuit Breakers

If your circuit breaker trips frequently, it could be a sign that your electrical system is experiencing power surges. Circuit breakers are designed to trip when the electrical current exceeds a safe level, which can happen during a power surge.

#4 – Malfunctioning Electronics

If your electronic devices or appliances are suddenly malfunctioning or failing, it could be a sign of a power surge. Power surges can damage sensitive electronics and cause them to fail or malfunction. If you notice that your electronics are behaving erratically or not working at all, it is important to have your electrical system inspected by a qualified electrician.

#5 – Unexplained Damage

If you notice unexplained damage to your electronics, such as cracks or scratches, it could be a sign of a power surge. Power surges can cause physical damage to electronics and appliances, which may not be immediately apparent.

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Are Power Surges Common?

Power surges can occur at any time and can be caused by a variety of factors, such as lightning strikes, faulty wiring, and power outages. While power surges are not uncommon, their frequency can vary depending on several factors, such as the location of your home and the quality of your electrical system.

For example, if you live in an area that experiences frequent lightning strikes or power outages, you may be more likely to experience power surges. Additionally, if your electrical system is outdated or poorly maintained, it may be more susceptible to power surges. While an electric surge can be frustrating and potentially costly, there are steps you can take to protect your home, such as installing surge protectors and having your electrical system inspected by a qualified electrician.

How Often Do Power Surges Happen?

Power surges mostly happen in the summer, but can happen more frequently than you think. These frequent surges, while often on a smaller scale, can easily go unnoticed. Even though the damage from each surge might be minor, the cumulative effect can be significant over time, potentially leading to power surge damage that harms your appliances. This is why it’s essential to keep the prevention tips we discussed above in mind, as they play a pivotal role in shielding your valuable devices from the potentially destructive impact of recurring power surges.

Related post: Can a Power Surge Damage Appliances?