I was setting up my underground temporary power pole and the inspector didn‘t approve it. His notes are.INSTALL MAIN BONDING JUMPER.( #8 AWG COPPER FROM NEUTRAL BAR TO EQUIPMENT GROUNDING BAR).2005 NEC 250 .28 -(D)Do I just connect my grounding rod to the metal case/can? Or is this a copper wire that connects the neutral and grounding bars? The grounding rod should connect to the bar that is screwed directly into the can right? Then there is a jumper that connects that bar to the neutral bar? Does that sound right?
There is a necessity for grounding the electricity supply, the neutral can have a backfeed of power and the ground is just that, they both have to be bonded together and run to the ground pole. Any q's call an electrician, but, you made it this far, a simple wire bond will suffice, #8 awg depending on the size of the service.
Simply put: Just do what the man says to do. Run a bare #8 AWG. copper wire from a terminal on the grounding bar to one on the neutral bar. (The neutral bar is the one insulated from the case, the ground bar is not. Run this wire along the perimeter of the case so it stays out of the way of later wiring.) The grounding rod should also be connected to the grounding bar. Some times a ground wire to a threaded screw in the the case is also provided. The National Electrical Code requires that the neutral wiring be grounded once only once at the incoming service.
The main bonding jumper connects the neutral bar to the ground bar. Usually there is a screw that bonds the neutral buss to the panel box. The ground buss is bolted directly to the box. But instead of that, you can connect a #8 copper wire to both, bonding them together electrically. This is done at the main service panel only. You are correct that the ground rods connect to the ground buss, the service neutral connects to the neutral buss and the main bonding jumper connects both of those together.
