The core principle is:
The calculator performs a rolling sphere algorithm: rolling sphere method calculator
Let’s walk through a typical workflow using a digital RSM calculator. The core principle is: The calculator performs a
The sphere’s radius is not arbitrary. It is derived from the formula, which relates to the peak lightning current. The most common standard (IEC 62305 and NFPA 780) defines protection levels (I to IV) with corresponding sphere radii: rolling sphere method calculator