What distinguishes a non-feed through GFCI from other types?

• A. It provides whole system protection
• B. It offers protection away from the installation
• C. It limits protection only to the outlet
• D. It includes a reset feature

Answer: (C)

A non-feed through Ground Fault Circuit Interrupter (GFCI) is specifically designed to limit its protection to the outlet or receptacle where it is directly installed. This means that it does not protect downstream outlets or devices that may be connected to it, as its functionality is localized. This characteristic sets it apart from feed-through GFCIs, which can protect multiple outlets on the same circuit.

In a non-feed through configuration, if the outlet experiences a ground fault, the GFCI will trip and cut the power, but this will not extend to other outlets or devices that are fed by the circuit. This contrasts with other types of GFCIs that may provide broader protection across connected devices. Understanding this distinction is critical for electrical safety, as it emphasizes the limits of the protection provided by non-feed through GFCIs.

Additionally, the other options describe features that are more characteristic of GFCIs in general or specific types of GFCIs rather than being unique to non-feed through models. For example, some GFCIs may offer whole system protection or may include a reset feature, but the defining feature of the non-feed through type is its local protection limitation.