My shop has grown to the point that I need addition circuits, and am in the process of adding a new 100 amp box. Two questions, one the new panel has only one ground connection, do I put both the neutral and ground wires into that one connection? Second, do I need to connect a second ground rod to the sub panel. Also, any other special things to watch for? This may be simple, but I would like more educated opinions. I will be moving the existing circuits for the shop to the new box.

Ken