I have a comment about your "pump's copper groud wire". I'm pretty sure you're referring to the pool bond and the bonding lug on the housing of your pump's motor (there should also be a ground in the electrical supply wiring). According to code in my town (when I built the pool last year) an AG pool requires #8 solid copper wire that encircles the pool completely and is electrically connected to every piece of metal (larger than 4") in or on the pool and the pump and any other electrical pool equipment and to the water itself. Your town may be different.

The pool bond is an important electrical safety system for your pool designed to make sure that everything your swimmers touch is at the same electrical potential helping to keep them from becoming conductors.

Your electrician should be responsible for installation of the pool bond. Did your electrician pull an electrical permit for the construction of your pool? Your electrical inspector should have examined the bond and verified it's connections.

Definitely call your electrician back and discuss the pool bonding requirements. Call the electrical inspector if you're unsatisifed with the electrician's answers.