A GFCI receptacle is different from conventional receptacles.In the event of a ground fault, a GFCI will trip and quickly stop the flow of electricity to prevent serious injury.
Definition of a ground fault: Instead of following its normal safe path, electricity passes through a person's body to reach the ground.For example, a defective appliance can cause a ground fault.
A GFCI receptacle does not protect against circuit overloads,short circuits, or shocks.For example you can still be shocked if you touch bare wires while standing on a non-conducting surface, such as a wood floor.
GFCI receptacles should be installed in kicthens,bathrooms, and exterior outlets.Underwriter's Laboratories INC., recommends that all GFCIs be tested monthly.
I hope this explains the GFCI outlet.
Call Matt Piazza,Total Home Inspection Service, if you are buying or selling a home in New Orleans or surrounding parishes.504-421-7440