Highlights how GFCIs work by sensing ground faults (which are detected when normally operating electrical currents leave their intended path) and then disconnect the circuit before an electrocution can occur.

NEMA GFP P2-2021
Original price was: $55.00.$27.00Current price is: $27.00.
A NEMA Ground Fault Personnel Protection Section White Paper – Ground-Fault Circuit Interrupter (GFCI) Fact Sheet
National Electrical Manufacturers Association , 09/01/2021