What is the purpose of secondary conductors in lightning protection systems?

The correct answer focuses on the role of secondary conductors in lightning protection systems, which is primarily to bond various metal bodies located within the protected area. This is crucial because it helps ensure that all metal parts, such as structural steel, plumbing, and electrical systems, are at the same electrical potential during a lightning event. By bonding these components, secondary conductors reduce the risk of side flashes and potential damage from lightning strikes.

In addition, bonding helps to prevent dangerous voltage differences that can occur between grounded and ungrounded parts of a structure. This is essential for maintaining the integrity of the lightning protection system and for the safety of the building and its occupants.

While other options reference concepts related to lightning protection, they do not accurately represent the specific function of secondary conductors. For example, primary lightning conductors are separate components designed to intercept and carry lightning strikes to ground, which is distinct from the bonding role of secondary conductors. Similarly, grounding rods are part of a grounding system but are not the sole function of secondary conductors. The option that states secondary conductors are for diverting lightning strikes misrepresents their purpose, as that responsibility falls primarily to the primary conductors.