Are bonding and grounding the same thing?Updated an hour ago

Bonding and grounding are distinct concepts. While closely related, neither is entirely effective without the other. Electrical bonding involves creating a low-impedance path for electromagnetic interference (EMI), radio-frequency interference (RFI), and electrostatic discharge (ESD) to dissipate to the AC ground. 

Grounding the AC electrical system establishes a 0-Volt reference potential with the earth, typically via a ground electrode such as a ground rod, which constitutes the true ground. The process of bonding all metallic components within a structure to create a low-resistance path is referred to as bonding to ground. Consequently, when a green "ground wire" is affixed to a copper busbar, it signifies the bonding of one item to another for equalization. 

In Structured Cabling Systems, the maximum permissible resistance between the most distant metallic bonded item and the Primary Busbar (PBB), which is connected to the building's AC ground system, is 100 milliohms, or 0.1 ohms. Two-point resistance testing is employed to verify that this threshold is not exceeded.