CFESA Electrical Certification Practice Test 2025 – Complete Exam Prep

The type of equipment that is likely to present problems with GFI (Ground Fault Interrupter) tripping is equipment that uses motors or compressors. This is primarily because motors and compressors typically generate varying levels of electrical noise and can produce inrush currents, which may exceed the threshold that triggers a GFI. Since GFI devices are designed to prevent electrical shock by cutting off power when they detect an imbalance in the current, any fluctuation in the flow caused by a motor or compressor can lead to nuisance tripping.

When motors start up, they often draw a significantly higher current than their normal operating level. This sudden increase can be misinterpreted by the GFI as a ground fault, causing it to trip and shut off the power. Additionally, the regular operation of motors or compressors can cause wear and tear, potentially leading to partial faults that further contribute to GFI tripping.

In contrast, standard lighting fixtures and refrigerators typically do not have the same issues with GFI tripping because they usually operate at more stable currents. Although microwaves have motors as part of their operation, they are less likely to interfere with GFIs due to their design. Thus, the nature of how motor and compressor equipment operates makes them the primary candidates for problems