I have also experienced GFCI receptacles that have looked like the one in your picture. Several items must be considered. Was the device exposed to moisture ( either direct spray or condensing? ( such as in an exterior wall where the inside is warm and the outside is cool and damp?)) Were there any power surges in the electrical system ( either external to the house and or internal to the house?). As electricians we need to be aware that all GFCI's, ARC fault's etc. have electronic components internally , and as such will have failures over time. The new "weather resistant" GFCI's should reduce the moisture failure issues ( I hope!). MP Marc Polan
|