Well here is a paragraph out of the book I purchased from Menards when I wired my basement. According to this the neutral AND bare and/or green wires connect to the neutral bar, which ultimately hook to the ground going to the ground rod in the yard.
"The main neutral wire is connected to the neutral bus bar. This bar is connected to a system ground wire, which leads to a grounding rod. White wires for every circuit, and possibly bare or green ground wires, also connect to the neutral bus bar. As a result, each 120-volt circuit has a black or colored wire leading from a circuit breaker, a white wire leading to the neutral bus bar, and possibly a bare copper or green-covered ground wire also connected to the neutral bar. "
this comes form the step-by-step guidebook on Home Wiringps: funny thing is Dave, The publishing information is from PO Box 70865, Salt Lake City, Utah 84170
