Main roof conductors should ideally be coursed along which of the following?

Main roof conductors play a crucial role in effectively managing lightning strikes and directing the electrical charge safely to the ground. The best practice for routing these conductors involves utilizing multiple pathways across the roof to ensure maximum protection. Coursing the main roof conductors along the perimeter, eaves, and ridges allows for an even distribution of lightning protection throughout the structure.

Along the perimeter of the roof, conductors can offer protection at the outer edges where lightning may strike. Running the conductors along the eaves provides additional safety in areas where water runoff might carry a charge downward, facilitating a swift response to any potential strike. Additionally, placing conductors along the ridges can capture lightning strikes effectively and direct the energy into the grounding system.

By choosing "All of these," it acknowledges that each of these routes serves a specific purpose in providing comprehensive protection. Multiple routes ensure that the system remains effective regardless of where a strike occurs, demonstrating the principle of redundancy in lightning protection systems. This highlights the importance of strategic conductor placement to minimize risks associated with lightning strikes.