ABYC Marine Electrical Practice Exam

Which of the following describes a proper installation of a Ground Fault Circuit Interrupter (GFCI)?

1. In any electrical panel

2. In wet or damp locations only

3. In dry locations

4. At every outlet on a boat

The correct answer is: In wet or damp locations only

A proper installation of a Ground Fault Circuit Interrupter (GFCI) is specifically required in wet or damp locations. GFCIs are designed to protect against electrical shock in areas where moisture is commonly present because the risk of electric shock increases significantly in these environments. These devices work by monitoring electrical current and disconnecting the circuit if an imbalance is detected, which often occurs in the presence of water or when a person comes in contact with an electrical fault. While GFCIs may also be used in other locations, their installation is particularly emphasized in wet or damp areas, such as bathrooms, kitchens, and outdoor outlets. This helps ensure safety in environments where water can inadvertently create a hazard. Therefore, the emphasis on their proper installation is associated with the increased likelihood of electrical faults in these critical areas. The other options do not adequately reflect the specific safety requirements surrounding GFCI installations, as they are either too broad or not conducive to the protective purpose GFCIs serve.