I am doing the electrical in my unfinished basement. I recently passed inspection for the rough-in but the inspector suggested I add a ground bar to my service panel since the slots on the neutral bar are nearly full. I attached one to the bottom, but am not 100% sure how to connect it
1) Should this be connected to the neutral bar?
2) If so, what's the best way?
2) If it is connected to the neutral bar, can I connect both ground wires and neutral return wires (white) to this bar?
If this is your main service equipment panel with a main breaker disconnect ( not a sub-panel) then the neutral bar is already bonded to the metal of the panel can. Simply by installing the ground bar with the mounting screws into the metal of the panel joined it (bonded it) with the neutral bar. Some companies (square d) use a green screw to bond the neutral bar to the metal of the enclosure and some use other designs. So as long as you used the correct ground bar for the panel and mounted it with the proper screws that came with the ground bar then you can connect white or bare or green or all three to that bar. If you used screws such as sheet metal screws then the ground bar is not installed in compliance with electrical code. You can also, if the panel spec sheet specifies, connect two solid ground wires of the sameguage in one hole of the current neutral bar. Sometimes this is an easy way to get more spaces available. You must only put one neutral (white) per hole however.