On Sun, 26 Feb 2012 11:54:58 -0800 (PST), DerbyDad03
wrote:

What could cause this:

GFCI on a supposedly grounded circuit. Wires appear to be installed
correctly at the GFCI.

3 light tester shows Open Ground.
115V between hot and neutral
54V between hot and ground lug
46V between neutral and ground lug

Thoughts?

Get an analog meter, with a needle, and use that.

It has other advantages too. You can watch a capaciitor charge from
the battery in the ohmmeter and see it accept current more slowly as
it charges.
You can with all but the
smallest caps tell if it's good or not, IMO, excpet for whether it is
no good at higher voltages than the meter battery.

I think I read that the cheap harbor freight digiital meters only have
1Meg resistance, or 1 meg per volt conceivabley, when meaasureing
voltage, but even that is a lot higher than most analog meters at
50K/v iirc.