What happens if adequate bonding is not provided between a grounded metal and the lightning protection system?

If adequate bonding is not established between a grounded metal and the lightning protection system, it can lead to the creation of dangerous arcs. Proper bonding ensures that all conductive components of the lightning protection system are at the same electrical potential. Without effective bonding, there can be a difference in voltage between the grounded metal and the lightning protection components. This difference can result in electrical arcing, which poses significant safety risks, including fire hazards and potential injury to individuals nearby. Ensuring that bonding is properly executed mitigates these risks by allowing for a safe and smooth discharge of lightning into the ground, thus protecting both the structure and its occupants.