How do inverters typically respond to AC ground faults?

Inverters typically respond to AC ground faults by detecting them on the AC side. This is due to the functional characteristics of inverters, which convert the direct current (DC) from solar panels into alternating current (AC) for use in the electrical grid or by home appliances. During this process, the inverter continuously monitors the output AC waveform for irregularities.

When an AC ground fault occurs, it can lead to imbalances or variations in the AC output, which the inverter can detect. Ground faults can cause dangerous situations, including equipment damage or a risk of electric shock, so this detection is crucial. By identifying the fault on the AC side, the inverter can take necessary protective measures, such as ceasing operations or disconnecting from the electrical system to ensure safety.

The other response options do not align with the standard functionality of inverters. Detecting on the DC side would not effectively address issues present in the AC system, and ignoring AC faults could lead to severe safety hazards. While signaling an alarm may be a feature of some systems, it isn't the primary method of addressing and mitigating the fault; the inverter must actively detect and respond to maintain safety and functionality.