enblethen wrote:
The "leakage" between ground and neutral will be present at any time.
there will still be a leakage path, but there is only current flowing when the circuit is completed. open the hot side and the upstream GFI cannot see any any current flow.
ground and neutral will not have current flow between them since there is no way to complete a path UNLESS there is a connection to another hot ciruit. which is a no no and unlikely or if there is induced current from another circuit. but both of these are highly unlikely.