What is the purpose of bonding metal bodies to the lightning protection system?

The primary purpose of bonding metal bodies to the lightning protection system is to prevent dangerous arcs or "flashovers." When metal structures are properly bonded to the lightning protection system, they create a continuous electrical path for lightning currents. This effectively reduces the potential difference between various metal components, minimizing the risk of arcing. By ensuring that all metal parts are electrically connected, it prevents high voltage from building up between them during a lightning strike, which could result in dangerous electrical discharge events. Proper bonding is a critical element in safeguarding both structural integrity and human safety during severe weather events involving lightning.