First off, I apologize for asking a question that seems to be asked a lot around here. I've been reading posts on the subject for about 2 hrs this morning, but I'm missing something.
My situation: I have a main panel in my house, and I have an attached garage which my dad and I put a 60amp subpanel in. Now I know that I need to keep the neutral and ground separate in this subpanel (I've seen LOTS on this topic), but what I'm missing is, where do I connect the grounding bar in the subpanel? Grounding rod, ground wire back to the main panel, don't need it?
Right now we've got (and I know our setup is wrong) the main lug subpanel with just one bus bar, which is not connected to the case. Both the ground and neutral wires for the branch circuits for this panel are connected to this bar. We have two hot wires and one neutral run back to the main panel where I have a 60amp breaker. The inspector has been out and given the system his blessing (which makes me doubt him a bit). My dad did most of the work, I had second thoughts after the inspection, so that's why I'm here.
So to correct the situation, I presume I need to get a grounding bar kit for the subpanel and hook the branch circuit grounds to it (keeping the neutral isolated from the ground). But what do I hook the grounding bar to? Do I need a grounding rod or a ground wire back to the main panel?
Thank you in advance, Korey