How Grounds Affect Peak Voltage Due to Lightning

Al Martin, retired Industry Topics, Fall 2021 Industry Topics

Did you know that the most common characterization of a ground rod may not work for lightning? In 1997, an experiment at the International Center for Lightning Research and Testing (ICLRT) at Camp Blanding, Florida, challenged the predominant view that ground rods are essentially resistive. That experiment found that the waveshapes of lightning currents in a building grounding system and those entering the electrical …