Which type of GFCI receptacle provides protection only at the installation point?

• A. Feed-through type
• B. Residential type
• C. Non-feed through type
• D. Portable type

Answer: (C)

The non-feed through type GFCI receptacle is designed to provide ground fault protection only at the installation point itself. This means that it protects the receptacle and devices that are directly plugged into it from ground faults. Unlike feed-through types, which can offer protection to other downstream outlets or devices connected to them, the non-feed through version is limited to just that specific location where it is installed.

This specific function is crucial in applications where only localized protection is necessary. For instance, it can be installed in wet or damp areas, like kitchens or bathrooms, to safeguard only the devices plugged into it without affecting any additional outlets. Understanding this distinction is key in choosing the correct type of GFCI receptacle based on the protection needs of the specific installation environment.