Tiger I applaud your efforts and your tought to look at the grounding. You could rent a test instrument that will measure the resistance of the ground rod to the earth. It should be 5 ohms or less.
If the resistance is higher than that additional sections of rod should be driven deeper to get the rod into a mineral layer with a higher dielectric constant (more conductive).
You assesment though possible is rare, with the power connections open there should be no potential on the neutral unless the POCO isn't properly grounded.
With all of the power disconnected can you measure current on the neutral if you ground it to the pool?
[This message has been edited by Ray97502 (edited 07-20-2005).]
