... I did not wire the pool. the owner and a friend installed and wired the pool.
the owner and a friend installed and wired the pool. owner told me he installed a #8 bare copper under the deck and bonded it to panel also bonded light and ladder to panel.
That could easily be the root of all problems right there. They may have had good intentions to try to do it right, but doesn't mean they still were not in over their heads and missed something.
Stray voltages is what bonding everything imaginable together is all about. The idea is not to eliminate those stray voltages but rather shunt them around the users. If everything within a user's reach is all at same potential it can be thousands of volts above ground and the user still feels nothing, just like a bird on an overhead power line.If a pool is installed PER nec this problem would not exist regardless of poco stray voltages ?