Which device is particularly beneficial for troubleshooting ground faults?

A clamp-on ammeter is particularly beneficial for troubleshooting ground faults because it allows users to measure the current flowing through a conductor without having to disconnect or interrupt the circuit. This feature is especially useful in troubleshooting situations where it is critical to maintain system operation while diagnosing issues.

When it comes to ground faults, the clamp-on ammeter can help identify abnormal current levels that may indicate a fault condition. By simply clamping the device around a wire, the technician can monitor the current in real-time and compare it to expected values. If the measured current is significantly higher than normal, it can be a clear indication of a ground fault or leakage current, leading to further investigation.

Tools such as digital voltmeters and wattmeters have their own important applications, but they may not offer the same convenience and immediacy for detecting ground faults. A digital voltmeter measures voltage and can help assess voltage levels, while a wattmeter measures power consumption, both of which are not as directly useful for identifying the presence of ground faults. An oscilloscope provides detailed waveform analysis but is not typically employed for direct current measurements in the same straightforward manner as a clamp-on ammeter. Thus, the clamp-on ammeter stands out as the most effective tool for this particular troubleshooting scenario