Power Surges And How To Prevent Them

Rusted wires

light on cement wall

Although it takes only a split second for a power surge to occur, this massive spike in electricity can wreak havoc - damaging electronic devices, appliances, and electric outlets in a home. Since we get many service requests relating to power surges, we wanted to share some helpful information on this topic. Of course, it isn’t always possible to prevent a power surge. Some causes, such as power grid outages and weather, are impossible to control. However, it is often possible to minimize power surge damage by being prepared.

What Causes a Power Surge?

According to AP analysis, the frequency and length of power failures are at their highest levels since reliability tracking began in 2013.

A power surge can cause various issues, from minor inconvenience to critical damage. Therefore, it’s important to prepare for a power surge and know what to do in the event of one. Settings such as alarms and timers should be initialized to the lowest possible sensitivity so that they won’t trigger during a surge. Here are some reasons why a power surge can occur:


It is not unusual for severe storms with damaging winds to travel through and also hover over the Baltimore area, particularly during the months of March through October. If lightning strikes a home’s electrical system, the system will accept the excess load, this extreme burden on the system will often cause a power surge.

Power Grid Failure:

power grid

The power grid is an electrical power system that supplies power to an extended area. Any damage to the power grid can, in turn, create a power surge. Particularly after a failed power grid is fixed, the jump in electrical current when the power is restored will often create a power surge.

Too Much Electrical Load:

Storms and power spikes can cause excess electrical load, but there are other reasons this can occur as well. Plugging too many appliances into one outlet, overloading an extension cord or plugging an appliance with greater amperage than is allowed for a particular circuit can also cause a power surge.

Bad Wiring:

Another big offender for electrical surges is faulty or damaged wiring. If wiring is damaged, exposed in any way or has been improperly installed, then it is more likely that a power surge will occur. Wiring problems within a home are often not readily apparent to the homeowner. If you find that your circuit breakers trip frequently, notice a burning smell, see burn marks on outlets or hear a buzzing sound coming from outlets, you should consult a licensed electrician right away.

Tips for Preventing a Power Surge

Most preventative measures will not fully protect against lightning strike damage. In addition, it is very important to understand that a power outage is always followed by a power surge. Therefore, during a massive storm, the best preventative measure is to unplug all appliances and electrical devices. You may not be able to predict every storm or power grid failure, but the following suggestions can be helpful in mitigating damage to home appliances and electronics:

Unplug everything during a storm:

storm outside a city

It is important to unplug everything during a storm for many reasons. The most important is safety. If there is lightning, it can come through the electrical wires and into your home. If you have any electronics plugged in, it could also come through those and give you a shock.

Use appliance-grade surge protectors for sensitive electronics:

Surge protectors with a high joule rating (2000+ joules) can help protect critical appliances in the event of a power surge. Consider purchasing appliance-grade surge protectors for your home’s computer, refrigerator, washer and dryer, air conditioning unit, or home theater system. Surge protectors are essential for any homeowner. The device protects electronics and other appliances from surges, which can occur when the power goes out. When the power goes out, the electrical current can flow through a surge protector in a jolt, protecting your devices from this damage.

Consider installing a whole home surge protector:

Using the same concept as smaller surge protectors, a whole home surge protector is installed on a home’s electrical box and acts as a barrier of protection between the home’s electrical system and the power grid. In the event of a power surge, a whole home surge protector will safeguard every outlet in the home.

Have an electrician evaluate your wiring:

Master electrician working on an electrical box.

It is worth having a licensed electrician evaluate your wiring if you live in an older home. Old, outdated wiring can fall into disrepair and may cause surges. Even with newer homes, it can be helpful to have an experienced electrician “audit” your wiring to identify any potential future issues. This evaluation can help determine the best course of action for repairing or replacing damaged or circuit-damaged wiring.

Invest in energy-efficient appliances:

Newer appliances, such as air conditioning units or refrigerators, are designed to be more efficient and lower electricity bills. In addition, because they draw less electricity, they tend to be more resistant to power surges than older appliance models. Some of the most energy-efficient appliances are the refrigerator, the washer, and the dryer.

Beware of the post-outage surge:

As mentioned above, a power surge always follows a power outage. One minute, all the lights are out and then suddenly the electrical system experiences a large jolt of electricity as everything powers back up. If you are in the middle of an outage, power down all electronics and unplug everything - including your air conditioner.

Distribute your appliances:

Since electrical outlets, extension cords and even power strips can easily become overburdened, it is wise to distribute appliances between outlets and surge protectors. For example, use dedicated surge protectors and outlets for the television and computer, rather than combining them. Distributing where appliances are plugged in can help prevent outlets from becoming overburdened.


Get a FREE Quote

At Milton Electric, we have the skills to handle various electrical tasks, from installing ceiling fans to wiring new homes. With our expertise and years of experience, we are committed to delivering top-notch electrical services that meet your needs and exceed your expectations. Trust us to get the job done right.

Related Article

Overloading vs. Faulty Wiring: Differentiating the Causes of Tripped Breakers

Learn about the common causes of tripped breakers, such as overloading and faulty wiring, and find effective ways to identify and resolve these issues.