Updated on 19 October, 2021
A continuity tester is a useful piece of electrical testing equipment especially designed to test an electric circuit to ascertain whether or not an existing electrical connection can be maintained between two electrical points; this is when an electrical circuit is to be created. When this kind of tester is used, the circuit is attached to the tester's terminal and the continuity meter is connected to the other end of the circuit. The terminals of the tester are designed in such a way as to let the user easily determine which is the live and non-live circuit. The continuity meter is also designed such that when the meter becomes full open, it alerts the user of the issue so that action can then be taken. Thus, the tester's purpose is to confirm if the current is being supplied to both ends of the circuit without any interruptions.
There are many ways by which the continuity tester can come into play. For instance, if a tripped breaker is the cause for an irregular power supply, the continuity tester's probe should be able to sense whether there is still continuity between the live and non-live circuits. If not, the device will reset itself and thus give an indication to the person on the other end that the circuit has been interfered with. This may, in some cases, mean switching off the supply to avoid any further damage to come about. However, should the problem continue despite having reset the device, then action has to be taken.
Most electricians that work with circuit wiring are more than equipped to handle the situation. Some even have the ability to reset the device using their technical knowledge. If that fails, there are a number of other solutions to this particular issue. Sometimes, it may just be a matter of installing additional isolation transformers to separate live circuits from non-live ones.
The continuity tester will also need at least one wire that leads to the live terminals and another one that leads to the non-live terminals. It is strongly recommended that they use two leads. The reason behind this is that sometimes, when the power is cut, both fuses may blow and therefore only one lead will provide any indication that something has gone wrong. A single lead will not help because it may blow if the electricity is not cut off abruptly. This is why having two leads means there will be a possibility that the fuse will blow regardless of how short the current is.
Once you have connected the wires, it is time to activate the continuity tester. To do this, simply place the probe into one terminal and push the button. In some cases, you will need to rotate the wire. At times, the test switches may have to be flipped. However, the majority of the time they can be easily activated manually.
There are different types of Continuity Testers and all have their own specific characteristics. The most common one is the magnetic one which is usually designed in such a way that it can detect low resistance. They are commonly used to test circuit breakers. Another type of continuity tester has two leads and a special connection between them, whereby an appropriate current will act as the input signal.
Some other popular electrical devices that use low resistance for conducting electricity include fuse boxes. When there is a fault in the circuit, the fuse box will sense this through the magnetic field it detects. These are just some of the common electrical devices that use continuity testers. There are numerous different models of Continuity Testers available and they can be used for many different applications.
A continuity tester can prove to be an extremely useful tool. For example, they can detect a circuit fault and reset it immediately. They can also reset fuse wires when the circuit is broken. In addition to all these things, you could find them in applications where you need two leads to work. Therefore, if you are working with two leads, you should get a good quality continuity tester so that you do not waste your time trying to repair the device.