Rolling Sphere Method Calculator 2021

Select the appropriate standard (IEC 62305 or NFPA 780) and the required protection level. For a hospital with life-saving electronics, choose . For a warehouse with no sensitive equipment, Level III (r = 45 m) may suffice.

The smaller the sphere, the stricter the protection. A 20m sphere can "squeeze" into tighter gaps, requiring more lightning rods to catch it. rolling sphere method calculator

If the calculator shows the sphere touches the roof, reduce the distance between rods or increase their height. Select the appropriate standard (IEC 62305 or NFPA

) between two proposed lightning rods. If the sphere "dipped" too low between them, it would touch the roof. To prevent this, she calculated the needed to keep the sphere’s belly high in the air. rolling sphere method calculator

23 Comments

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