How to Test Surge Protector – [Easy Ways]

The surge protector keeps our electronic devices safe from power surges and lightning strikes, which occur without warning at any time. But how do you know if your current surge protector is working correctly or not? It’s helpful to learn how to test your surge protector so it can continue protecting your electronics.

Here I will teach you how to test your surge protector using simple and accessible ways.

How to test your surge protector?

First, check the indicator light to see if the surge protector is on first when testing it.

If you have experienced a lightning strike or a power outage for a certain period, you will notice the indicator light flickering. Flickering indicates that your surge protector is protecting your electronics from voltage fluctuations.

If your surge protector does not feature a light indicator, you can still listen for the “click” sound that it makes when plugged in. In this case, your surge protector is indeed working and protecting your electrical devices.

However, if you don’t hear the “click”, it doesn’t necessarily mean the surge protector is not working. Therefore, you can ensure when you want to verify that your surge protector is still functional.

So, how can I know my surge protector is protecting my devices?

If your surge protector passes all the tests above, there are still ways to find out whether it’s protecting your electronics or not. First, turn on your surge protector and connect your high-power electrical equipment.

If your surge protector has done its job and protected your device, you won’t hear a popping sound or smell any smoke. However, in this case, your surge protector has failed, and you need to find a new one.

On the other hand, if the surge protector protects the appliance, it should make only a soft buzzing sound.

The following are the most common ways to check whether or not your surge protector is still protecting your electrical devices. When it fails any of these tests, you should look for another one.

More Two Simple Methods

Method 1# You can use a current testing meter to measure how much current your surge protector is drawing. A higher reading indicates a damaged surge protector.

In addition, you can look for warm spots or any bulging or chemical odors on the device. Finally, you should unplug your surge protector and replace it immediately if you hear a popping sound or smell chemicals.

Method 2# You can also use a voltage tester to measure the voltage coming from the outlet where your surge protector is plugged in. If it appears to work correctly, it should be okay. However, if the voltage is less than that, your surge protector has already failed.

However, this test is not necessarily the optimal way to test the surge protector since it does not provide a detailed analysis of what is going on.

Lastly, if you cannot test your surge protector using the methods listed above, contact your product manufacturer for further instructions. If you don’t do this, you may need to hire an electrician.

Why are LED indicators not foolproof?

If your surge protector shows its status, there are still other chances that it will fail. One of the easiest ways to tell is when the indicator does not light up at all.

Your surge protector isn’t working due to a broken internal component, or the metal oxide varistors (MOVs) inside have already been damaged.

It doesn’t mean that your device is still working if the indicator is lit. For example, your surge protector’s hand may turn on, but that doesn’t necessarily mean all the components are working.

That’s why it’s always better to have your surge protector checked by a skilled electrician immediately.

Why do I need an extra surge protection device in case my primary device fails?

If you have a device that a power surge or lightning has damaged, don’t throw it away! Instead, you can use the frying device as a backup surge protector.

What exactly is a fried device? Fry devices are surge protectors that a power surge has damaged. Although it can’t provide protection anymore, it can still absorb power surges.

It can also protect your computer, TV, or any other expensive electronic device. To use the fry, plug it into a wall outlet and connect your backup surge protection device.

After that, you can connect your expensive device to the backup surge protector. Keep in mind that you should buy a new surge protector instead of using the fry.


When it comes to testing a surge protector, most of the tests are pretty straightforward. After that, it’s just a matter of making sure you’re using the proper test to determine whether or not your surge protector is working.

It is most important to check if the indicator light is on. When it is on, you are ready to go.

Use a high-quality surge protector to protect a surge protector from damage. It is essential to consider features such as the Joule rating, the power voltage capability response, the clamping voltage, and the time when protecting your appliances.

In addition, remember that surge protectors can save you in the long run, but only if power surges do not damage them.

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