What device can be used to detect faults in electrical wiring?

A continuity tester is specifically designed to check the integrity of electrical connections and the continuity of wiring circuits. It works by sending a small current through the circuit you're testing. If there is a fault, such as a break in the wire or a poor connection, the continuity tester will indicate this by not allowing current to flow, signaling an issue in the wiring.

In contrast, an amperage meter is focused on measuring the current flowing through a conductor rather than detecting faults. A voltage regulator is used to maintain a constant voltage level, while a transformer functions to change voltage levels within a circuit. Neither the voltage regulator nor the transformer is suited for identifying faults in wiring; their purposes are quite different from diagnosing continuity issues. Thus, the continuity tester is the appropriate device for detecting faults in electrical wiring.