I'm currently at a job service change, existing main is 3 feet from edge of pool, how far do I have to be from pool thanks, I don't want this family to be out of power
You might be better off building a wall between the pool and the main instead of moving it. Although if there are no outlets located at the main you may not have regulatory problems.
IIRC the code cares more about outlets than about wires, unless they are open wires (not in raceway.)
Also, remember the necessary working space around service, etc.