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

The minimum diameter for Class II solid aluminum points is indeed 5/8 inch. This specification is crucial as it ensures adequate performance in lightning protection systems. The size of the points is essential for effective charge collection from lightning strikes. A diameter of 5/8 inch strikes a balance between being sufficiently robust to withstand the forces generated by lightning impacts while being practical for installation and maintenance.

Using smaller diameters could compromise the points' structural integrity and effectiveness at collecting electrical energy from lightning, which could ultimately lead to system failures or inadequate protection. Adhering to this minimum diameter helps in ensuring that the lightning protection system functions as intended and provides the necessary safety measures for structures and their occupants. This standardization of size reflects best practices and is a key part of proper lightning protection design.