While Part 2 determines if a building needs protection by calculating risk, to design and install the physical protection system. It applies to standard structures as well as structures presenting a risk of explosion. Core Components of a Lightning Protection System (LPS)
Captures the lightning strike. The standard approves three positioning methods:
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An internal system prevents dangerous sparking inside the structure caused by the lightning current flowing through the external components.
The standard aims to provide a framework for protecting people and property from the effects of lightning strikes, and it's widely adopted by engineers, architects, and building owners around the world.
: The highest level of protection, designed to handle lightning currents up to 200 kA.
You can find the most recent version, , through official standards bodies like the International Electrotechnical Commission (IEC) or regional providers like EVS and BSI Knowledge . EVS-EN IEC 62305-3:2025
Unlike Part 2, which focuses on Risk Management (calculating whether you need protection), Part 3 assumes you need it and tells you how to do it. It provides the design principles for:
Conducted annually to check for loose connections or corrosion.
While Part 2 determines if a building needs protection by calculating risk, to design and install the physical protection system. It applies to standard structures as well as structures presenting a risk of explosion. Core Components of a Lightning Protection System (LPS)
Captures the lightning strike. The standard approves three positioning methods:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
An internal system prevents dangerous sparking inside the structure caused by the lightning current flowing through the external components.
The standard aims to provide a framework for protecting people and property from the effects of lightning strikes, and it's widely adopted by engineers, architects, and building owners around the world.
: The highest level of protection, designed to handle lightning currents up to 200 kA.
You can find the most recent version, , through official standards bodies like the International Electrotechnical Commission (IEC) or regional providers like EVS and BSI Knowledge . EVS-EN IEC 62305-3:2025
Unlike Part 2, which focuses on Risk Management (calculating whether you need protection), Part 3 assumes you need it and tells you how to do it. It provides the design principles for:
Conducted annually to check for loose connections or corrosion.
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