Ok, I went back and reviewed the NEC. You are right, bk406, a #12 insulated ground is required for the pump if it is run outside of the dwelling unit. Anything inside the house can be uninsulated. My area requires a GFCI breaker or receptacle, but I do not see that it is required unless it is cord and plug. I personally wouldn't have a pool that is not GFCI protected. I also would always drive a ground rod although it doesn't appear to be required by the NEC.
As far as running the pump at 120v, I would like to hear a reason why this would increase the temperature it would run. I have never heard of this before and I have quite a bit of experience with motors. Please educate me.
As far as running the pump at 120v, I would like to hear a reason why this would increase the temperature it would run. I have never heard of this before and I have quite a bit of experience with motors. Please educate me.