How to use an electrical tester pen: Easy check for electricity

Electrical testers are used to check and identify the electrical circuit in an appliance or a wiring system. A tester is a device that detects low, high, or no voltage in an electrical circuit. It can also be used to test an electrical device like a motor or transformer by applying the test voltage to the device, and it will either pass or fail.

Unfortunately, many poorly designed products have been sold in the market which can be hazardous when they are used with these devices. In addition to this, there are differences between different types of testers. This article will help you learn how to use an electric tester so you can get results without any trouble.


How to use an electrical tester pen: check for electricity

You should wear rubber gloves and boots with rubber soles when you use a tester. It is possible that you come in contact with electricity when you use a tester. Rubber soles make sure that the electricity gets diffused over the floor so you don’t get hurt. Read the manual of your tester to get more information about safety requirements.

There are different types of testers that each have different applications. Let’s go over how you have to use them. 

Receptacle tester 

The receptacle tester is used to check the voltage of the electrical outlet. The goal is to test an outlet. The tester is plugged into the power outlet. The tester will then indicate if the outlet is functioning or not. It can also show if the outlet is grounded.

This is pretty straightforward as you just have to plug it in as you would do with a normal electrical device. You will get results instantly. Lights will indicate if the outlet is working or not. You can use a multimeter for this as well (see below).

Non-contact voltage tester

The non-contact voltage tester is the most popular type of tester. It is also the cheapest, and it is also easy to use since you don’t need to touch anything with your hand. To use this type of tester, you just need to put the device on a surface, connect the probes to its terminals and press the test button. This tester will then provide a reading on an LED display.

  The first thing you need to do is turn the tester on. This is often done by pressing a button. Make sure the tester has good contact with the wire or circuit. The best way to do this is to place your tester on top of whatever you’re testing. Then, see if the tester gives a signal. Sometimes a white or green light is used to indicate that there is electricity present. This only takes a few seconds so you get the result quite fast. 

These testers are quite small and can fit in a uniform. When plumbers work on a boiler or heater, they can check if some wires are working or not. 

Multimeter to test an outlet

 If you want to test for low, high, or no voltage, then you should consider getting a volt-ohmmeter (or multimeter) that will show these exact voltages on its screen

These are more expensive and take more work to operate. You need to press one sensor to the first wire and the other one to the second one. Keep in mind that wires often have plastic insulation that you have to remove.

These meters often can measure other things such as frequency, capacitance, and diode, temperature, wire on-off, Battery test as well. Make sure that you turn the dial to the right test or you won’t get the desired results.

Multimeters have batteries. You might have to replace them if the device indicates that the battery is low. 

Why you should use a tester

The first and most important reason to use a tester is that it can save you from physical harm if the wiring system or appliance is malfunctioning. If a device or appliance is not operating but has been designed with an electrical tester in mind, then it could be possible to identify the problem before touching the wiring.

This is often used by plumbers and electricians to make sure that they don’t touch wires that have electricity on them while they are working. 

In addition to this, many electrical devices will have a sticker on them that will indicate whether they are safe for testing with an electric tester as well as what voltage should be applied to them during the test. High voltage items can be dangerous to use a tester on.

Finally, using a tester can help prevent fires and other types of property damage that may result from poorly designed products.

A tester can sometimes be used by an electrician to troubleshoot an appliance or wiring system. If the appliance or wiring system has a fault, the electrician will apply a test voltage to the device and see what type of response he gets. If the device passes for a particular voltage, then it is likely that the problem is in the wiring system.

If there is no response from an electrical circuit, it means that something has cut the power off to that circuit. This could be caused by a dead fuse or blown fuse in that circuit, or it could just be disconnected wires. Either way, if this type of situation happens, then you need to reroute power to that specific circuit and reconnect any broken wires before continuing with your work.


Electric testers help avoid costly mistakes, such as potentially dangerous electrical overloads. They are commonly used in construction and electrical work, but they can be helpful in other fields as well.

Electric testers help all levels of electricians, from the novice to the experienced.

Regardless of your experience level, you should use a tester to locate and identify problems. Knowing how to use a tester is just one of the many reasons why you should invest in one. They are quite cheap and can last a long time.