[250.126]. Green, not readily removable terminal
screw with hex head; Green, not readily removable hex nut;
Green pressure wire connector.
Per Article 100, grounding means "connect to
earth" and bonding means "connect via metallic pathway." There is no
technical reason to connect equipment to earth. Also, Part V
discusses bonding in a way the precludes such a thing as being a
code requirement. What is meant here is bonding.
[250.130(A) and (B)]. For grounded systems, bond
the equipment grounding conductor (EGC) to the grounded service
conductor and the grounding electrode conductor. For ungrounded
systems, bond the EGC to the grounding electrode conductor (there is
no grounded service conductor).
[250.130(C)]. The grounding terminal bar.