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Safety Risks and Fixes: Power Strip Making Buzzing Noise

Safety Risks and Fixes: Power Strip Making Buzzing Noise

Hearing a power strip making buzzing noise can be unsettling and raise concerns about the safety and functionality of your electronics. This sound, far from being a quirky feature, is a sign that something isn't quite right with how the device is operating. This guide will discuss the root causes of this strange noise, offer straightforward troubleshooting tips to address the issue, examine the potential risks involved if the buzzing is ignored, and outline practical preventive strategies to ensure your power strip remains silent and efficient. So, without further ado, let's get started!

What Causes a Power Strip to Buzz?

Here are some reasons why a power strip may make a buzzing sound:

  1. Internal Component Vibration

Power strips consist of various components that, under electric current, can vibrate at a frequency audible to the human ear due to electromagnetic forces. Transformers, for instance, can produce a power strip humming sound when their laminated iron cores or windings physically vibrate.

  1. Loose Parts or Screws

Over time, parts inside the power strip, such as screws or other fasteners, can become loose due to expansion and contraction from heating cycles. This can lead to slight movements or vibrations that result in a power strip buzzing noise.

  1. Overloading

When too many devices are plugged into a power strip, it can cause the internal wiring or components to overheat. This not only leads to a buzzing noise due to thermal expansion but also can be a potential fire hazard.

  1. Faulty Wiring or Damage

Damaged insulation, frayed wires, or loose connections inside the power strip can create electrical arcing. This dangerous phenomenon can cause a buzzing or crackling sound as the electricity jumps across gaps in the circuit.

  1. Incompatible Devices

Certain devices that irregularly draw power or generate electrical noise can cause the power strip to buzz. Examples include devices with motors or ones that switch power modes frequently.

  1. Manufacturing Defects

If the power strip is not properly manufactured or assembled, components might be improperly seated or connected, which can cause an audible buzz as electrical currents pass through them.

How Can You Troubleshoot a Buzzing Power Strip?

Here is a guide on how to troubleshoot a buzzing power strip:

  1. Unplug All Devices:Start by removing all devices from the power strip. This helps determine if the buzzing noise is due to a particular device or the power strip itself.
  1. Inspect for Visible Damage:Visually check the power strip for any possible signs of damage or wear. Look for melted plastic, exposed wires, burn marks, or anything that seems out of the ordinary.
  1. Check the Tightness of Components:If the power strip can be safely opened and it doesn't void any warranties, check that all screws and components are secure. Do not touch internal components if you are unqualified. It’s safer to seek professional help.
  1. Test the Power Strip Without Extension Cords:Ensure that the power strip is not connected to an extension cord, as this can also cause electrical noise or buzzing due to additional resistance or poor connection points.
  1. Plug Devices in One by One: After ensuring the power strip itself is not the issue, plug in devices one by one to identify if a specific appliance is causing the buzz.
  1. Use a Different Outlet:Sometimes the issue might be with the wall outlet and not the power strip. Test the power strip in a different outlet to see if the buzzing persists.

What Are the Risks of Ignoring Buzzing in Power Strips?

Here are the risks associated with ignoring buzzing sounds in power strips:

  1. Electrical Fire Hazard:A buzzing noise can be indicative of electrical issues that pose a serious fire hazard if ignored. Overheating and arcing can potentially lead to sparks and combustion.
  1. Damage to Connected Devices:Fluctuations and poor electrical quality due to a faulty power strip can lead to mild/severe damage or reduced lifespan of the connected devices.
  1. Electrical Shock Risk:Faulty wiring or damage can highly increase the risk of electric shock when interacting with the power strip or connected devices.
  1. Interference with Other Devices:A malfunctioning power strip can emit electromagnetic interference, which may negatively impact nearby electronic devices.

Preventive Measures to Avoid Buzzing in Power Strips 

Here are some preventive measures you can take to avoid buzzing in power strips:

  1. Avoid Overloading:Make sure the total power drawn by all the smart devices connected to the power strip does not exceed its rated capacity, which is usually measured in watts or amperes (A).
  1. Regular Inspection:It is important to periodically inspect the power strip for any early signs of damage such as wear and tear. If the power strip is damaged or several years old, it should be replaced.
  1. Proper Ventilation:Keep power strips in well-ventilated areas to prevent overheating and make sure they are not covered by cloth or other materials that can trap heat.
  1. Unplug Unused Devices:To reduce the electrical load and potential for buzzing, unplug devices that are not in use, and turn off the power strip when it's not needed.
  1. Use Quality Power Strips:Purchase power strips from reputable manufacturers that include built-in circuit breakers or surge protectors for added safety against overloads and spikes.

Looking for high-quality power strips? Anker has got you covered!

Effortlessly power up to six devices with the Anker 524 Power Strip, an essential accessory for modern households. Outfitted with 3 AC outlets, 2 USB-A ports, and a powerful 30W USB-C port featuring Power Delivery for rapid charging, this cube-shaped marvel covers all your charging needs. Its compact form factor, measuring less than 2 ½ cubic inches, ensures it fits snugly on a nightstand or effortlessly into a travel bag.

Safety is of utmost importance, and the Anker 524 ensures that it doesn't compromise on safety measures. It boasts an exclusive 7-point safety system, including a fire-retardant casing and internal safety shutters to protect you and your devices.


In wrapping up, addressing power strip making buzzing noise goes beyond just fixing a pesky sound—it's about keeping our homes safe and our gadgets running smoothly for years to come. From digging into why it happens to finding smart solutions and prevention tricks, we've taken a big step towards electrical safety. Don't ignore a buzz, it can cause bigger problems. With the right knowledge, we can foster a safer and quieter environment today!


Here are some commonly asked questions about power strip making buzzing noise.

Could the buzzing sound be a sign of overload?

Yes, a buzzing sound can indeed be a sign of overload. This noise might indicate that the surge protector or power strip is handling more electricity than it's designed for, which can lead to overheating and potentially hazardous situations.

Is the buzzing sound normal for surge protectors?

While some minor noise can be normal for surge protectors, a distinct buzzing sound is not typical and should be considered a warning sign. This could indicate an electrical issue, and it's advisable to check the device and connected appliances for any malfunctioning.

Can a buzzing power strip trip the circuit breaker?

A buzzing power strip can potentially trip the circuit breaker, especially if the noise signifies an electrical fault or overload that causes a short circuit or significant power draw beyond what the circuit can handle.

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