Got it. It gets a little contradictory, since the reason that we are considering using the GFCI is that the old BX is _not_ considered suitable to be an equipment ground, but we don't want to connect it because it might be an equipment ground [Linked Image]

I guess the problem is that the code section being considered discusses installation _without_ equipment grounds, but doesn't really address situations where you have _insufficient_ equipment grounds.

-Jon