I seem to have misplaced my multimeter so I'm unable to measure current. Might have to just pick up a new one, I've lost it pretty good, I don't think I've used it since before I moved .... four years ago.
Anyhow it was sort of through a serendipitous sequence of events that I found it. Indeed with the grounding probe in, I can't feel the tingling in the main tank. I was just moving some things around and had the probe unplugged and noticed it. Then while trying to find it, I brushed my hand against the air intake tube of the skimmer (it's covered in salt spray) and that's when I really felt the zap-zap-zap-zap (didn't feel like a full 110 though
). I just thought it was odd that if I say, spill water on the floor and the puddle touches the return pump, the GFCI kicks off no problem. I've also managed to kick the GFCI off by strategically (
) spilling water during water changes (hey, I'm a klutz, what can I say.
) ... So I know the GFCI trips in other circumstances, just thought it was odd it did not in this one.
But I bet it will trip if I move the GFCI to the sump. Will try that tonight and see what comes of it. Guess it goes to show you really need ground probes in both the main tank AND the sump, if indeed it trips fine then.