What type of receptacle is specifically designed to protect against ground faults?

The GFI Receptacle, also known as a Ground Fault Circuit Interrupter (GFCI) receptacle, is specifically designed to protect against ground faults. This type of receptacle monitors the electrical current flowing in a circuit and can detect imbalances caused by ground faults, which occur when the current escapes the intended path. If a ground fault is detected, the GFI receptacle quickly disconnects the power, thereby reducing the risk of electric shock. This feature makes it particularly important for installations in areas where moisture is present, such as kitchens and bathrooms.

In contrast, a standard duplex receptacle does not offer this level of protection and is suited for general use where ground faults are not a concern. A double-duplex receptacle simply provides additional outlets without any added safety features. Similarly, while weatherproof duplex receptacles are designed to withstand environmental conditions, they do not provide ground fault protection. Thus, the GFI receptacle stands out as the best choice for ensuring safety against potential electric shocks due to ground faults.