WHAT IS LIGHTNING PROTECTION? MAIN COMPONENTS OF A LIGHTNING PROTECTION SYSTEM Terminals - Also known as lightning rods, must be installed on roof ridges, dormers, chimneys, ventilators, and other structures as required Main Conductors - Cables, which interconnect the air terminals to grounds Ground Terminations - These are typically copper or copper-clad rods driven into the earth a minimum of 10 feet in depth. Bonding Connections - These are made to equalize the potential between grounded metal objects Lightning Arresters - Also known as lightning rods, must be installed on roof ridges, dormers, chimneys, ventilators, and other structures as required Surge Suppressors - Also known as lightning rods, must be installed on roof ridges, dormers, chimneys, ventilators, and other structures as required