Which set lists the devices used to provide ground-fault protection?

• A. Breaker, Receptacle, Extension Cord
• B. Breaker, Receptacle
• C. Receptacle, Extension Cord, Switch
• D. Breaker, Extension Cord, Fuse

Answer: (A)

Ground-fault protection works by devices that detect an imbalance between the hot and neutral conductors and quickly cut power to prevent shock. This protection can be built into different parts of the system: a GFCI circuit-breaker in the panel, a GFCI receptacle installed in a wall outlet, or a portable GFCI extension cord that provides protection along a circuit. Because each of these devices serves the same protective purpose in different forms, the set that includes a breaker, a receptacle, and an extension cord covers the common ways to provide ground-fault protection. The other options include items that don’t offer ground-fault protection by themselves (like a switch) or rely on overcurrent protection (like a fuse) rather than ground-fault sensing.