Just installed a 200amp panel box, having concerns where se cable exits the house. Can the ground wire and se cable exit the house through the same hole? Water line and gas line are where I would like to put my ground rods. Is there any spec on how far away the ground rods can be? Also how many ground rods do I need for a 200 amp service, and how far apart from each other do they have to be, is it 6ft apart?