Billy3169
A 'basic' explanation of the internal operation of a GFI device is:
The current on the black (hot) and white (neutral) are monitored and compared. Any difference between the current on hot & neutral that exceeds the threshold of the device will 'open' the circuit.
Based on the above, the EGC is NOT required for designed function of a GFI.
The discussion is this thread is reflective of the use of various GFI testers, which require a functional EGC to operate & trip the GFI.
Hope this clears this up.
Last edited by HotLine1; 10/15/13 08:59 PM.
