What is gfci?
A residual-current device, residual-current circuit breaker, or ground-fault circuit interrupter is a device that quickly breaks an electrical circuit to prevent serious harm from an ongoing electric shock. A ground-fault circuit interrupter (GFCI) is the only protection device designed to protect people against electric shock from an electrical system. What is a GFCI Outlet? A ground fault circuit interrupter is a protective device specifically. A GFI, or GFCI – Ground Fault Circuit Interrupter device protects us from receiving electric shocks from faults in the electrical devices we use in. In short, GFCI outlets exist to protect people from electrical shock — it is completely different from a house fuse.