Home Inspection State Practice Exam

An ungrounded receptacle may be replaced by a ground fault circuit interrupter installed?

1. Downstream from the receptacle

2. None of these

3. In the main panel

4. Upstream from the receptacle

The correct answer is: Upstream from the receptacle

Replacing an ungrounded receptacle with a ground fault circuit interrupter (GFCI) is a common practice to enhance safety, especially in areas where the risk of electrical shock is elevated, such as kitchens and bathrooms. The correct approach is to install the GFCI upstream from the receptacle, which means it should be placed on the circuit before the receptacle in the electrical flow. When the GFCI is installed upstream, it can provide ground fault protection to the entire circuit, including all downstream outlets. If an electrical fault occurs, the GFCI will interrupt the circuit, thereby offering protection even if the receptacle itself does not have a ground connection. This arrangement effectively mitigates the risk of electric shock from the ungrounded receptacle. In contrast, placing the GFCI downstream would not provide protection to the ungrounded receptacle itself. Thus, it is crucial for both the safety of the installation and compliance with electrical codes to ensure that the GFCI is installed in the appropriate position in relation to the ungrounded receptacle.