This section explains how to capture lightning strikes. It details:
The potential difference between a person's feet as they walk near the grounding system.
The standard provides technical requirements for two primary areas: iec 62305-3 pdf
A geometric approach where a sphere of a specific radius (dependent on the Lightning Protection Level, or LPL) is rolled over the structure. Areas touched by the sphere require protection.
A ring electrode encircling the structure, embedded in the soil or integrated into the concrete foundation (foundation earth). Type B is highly recommended for electronic-heavy structures. Internal Lightning Protection and Equipotential Bonding This section explains how to capture lightning strikes
(defined by the LPL) is rolled over the structure. Wherever the sphere touches the building requires protection.
Involves rolling an imaginary sphere across the structure; anywhere the sphere touches requires protection. This is the universal method for complex geometry. Areas touched by the sphere require protection
Implementing the guidelines of the IEC 62305-3 standard ensures that your physical building structure and the people inside remain safe during severe weather events. When sourcing an , ensure you are consulting the latest ratified version from the IEC webstore or your regional standards body (such as BS EN or DIN) to maintain regulatory compliance and verify specific installation tolerances.
The potential difference between a person's feet spaced one meter apart on the ground surface. Mitigation Strategies