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Voltage Testers

Voltage Testers: How to Use and Where to Buy

Voltage testers have been used for decades by electricians, professionals, and even amateurs. This tool measures the amount of electrical charge in a power line, such as 120-volt household current or 240-volt commercial current. A voltage tester will help you identify a problem with the wiring or the appliance and prevent you from getting shocked or worse. Let’s take a closer look at what voltage testers are, where to buy them, and how to use them safely.

What Is a Voltage Tester?

A voltage tester is a device made up of two probes connected to a metal body. The probes are either connected with a wire or cord, depending on the model. The metal body is made of an insulating material, allowing you to use the voltage tester without the risk of getting shocked. Inside the metal body are two metal contacts which contact and measure the amount of electricity passing through the wire.

Voltage testers are available in a variety of sizes and styles, each intended for different purposes. Some testers are designed for residential use, while others are designed for commercial or industrial applications. Depending on the type of voltage tester, it may also have additional features, such as a multimeter or an integrated light.

Where Can You Buy a Voltage Tester?

Voltage testers can be bought from most hardware stores and home improvement centers. If you can’t find one in your local area, you can search online for a reputable supplier. Most online retailers carry a wide variety of voltage testers from different manufacturers.

When buying a voltage tester, you should make sure that it was designed for the purpose you plan to use it for. For example, if you plan to use it to test 120 volts, you should get a voltage tester specifically designed for that purpose. It is also important to make sure that the voltage tester is UL or CE rated, which tells you that the device meets certain safety requirements.

How to Use a Voltage Tester

When using a voltage tester, it’s important to follow certain safety precautions. Before touching any electrical wires or outlets, make sure they are turned off and unplugged. Use the voltage tester to determine the amount of electricity passing through the wire. The device should indicate whether the circuit is live or dead. If it’s dead, then the wires or outlet are safe to touch.

It’s also important to keep your hands away from the probe tips when using the voltage tester. If you do accidentally touch the probe tips, you should call an electrician for help. When using the voltage tester, make sure you are wearing insulated gloves and remove any jewelry that could conduct electricity.


Voltage testers are an essential tool for anyone working with electricity. They can help you identify problems with wiring or the appliance, and prevent potentially dangerous shocks. Make sure that you buy the right kind of voltage tester for your needs and follow all safety instructions when using it. With the right voltage tester, you can be sure that the job gets done safely and correctly.

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