A multimeter is a device that can measure multiple electrical properties, such as voltage, current, and resistance. It can be used to test for faults in electrical circuits by measuring the voltage, current, and resistance at various points in the circuit. If the measurements are not within the expected range, it may indicate a fault in the circuit.
Clamp meter
A clamp meter is a device that can measure electrical current without having to make contact with the conductor. It does this by using a magnetic field to induce a current in the conductor. The amount of current induced is proportional to the amount of current flowing through the conductor. Clamp meters can be used to test for faults in electrical circuits by measuring the current at various points in the circuit. If the current is not within the expected range, it may indicate a fault in the circuit.
Megger
A megger is a device that can measure the insulation resistance of electrical circuits. Insulation resistance is the resistance between two conductors that are not supposed to be connected. It is important to test insulation resistance regularly to ensure that the insulation is not damaged, as this can lead to electrical faults. Meggers can be used to test insulation resistance by applying a high voltage between the two conductors and measuring the resistance. If the resistance is too low, it may indicate that the insulation is damaged.
Circuit tester
A circuit tester is a device that can test for continuity in electrical circuits. Continuity is the ability of a circuit to conduct electricity. Circuit testers can be used to test for faults in electrical circuits by checking to see if there is continuity between two points in the circuit. If there is no continuity, it may indicate a fault in the circuit.