"More than 21-percent of GFCI circuit breakers and 19-percent of GFCI Receptacles tested did not provide ground fault protection. The failure rate in areas of h

"More than 21-percent of GFCI circuit breakers and 19-percent of GFCI Receptacles tested did not provide ground fault protection. The failure rate in areas of high-lightening strike was as high as 57 percent ... when a GFCI device fails, it continues to pass electric current but no longer protects the unsuspecting homeowner from ground fault conditions." (From http://www.experts123.com/a/the-national-electrical-code-ground-fault-circuit-interrupter-protection.html http://www.experts123.com/a/the-national-electrical-code-gro...) And read this before dropping your hair dryer in the bathtub: https://iaeimagazine.org/magazine/2010/01/16/the-illusion-of-gfci-protection/ https://iaeimagazine.org/magazine/2010/01/16/the-illusion-of...