Class II solid copper points must be of what minimum diameter?

The minimum diameter for Class II solid copper points is specified as 1/2 inch. This requirement is in place to ensure that the lightning protection system can effectively capture and conduct lightning strikes to the grounding system. A larger diameter helps in maximizing the surface area for lightning attraction and provides better mechanical strength to withstand the forces of a lightning strike.

Using a 1/2 inch diameter for solid copper points ensures that the points can properly perform their role within the lightning protection system, ensuring reliability and effectiveness. This specification aligns with industry standards for ensuring safety and performance in lightning protection systems. Having points that are too small could result in inadequate protection and increased risk of system failure during a lightning event.