Levels of Lightning Protection

What are the levels of lightning protection for buildings?

Lightning protection systems for buildings are designed to minimize the risk of damage from direct lightning strikes. There are typically three levels of lightning protection used for buildings:

3 Levels for Lightning Protection System

1. Level 1 (LPS-1):

   This is the primary level of protection and is aimed at providing protection against direct lightning strikes. It involves the installation of external lightning protection systems (also known as lightning rods or air terminals) on the highest points of the building. These air terminals are connected to down conductors, which carry the lightning current safely to the grounding system.

2. Level 2 (LPS-2):

   This level of protection involves the installation of surge protection devices (SPDs) at the main electrical service entrance to protect against transient overvoltages caused by lightning strikes. These SPDs help prevent damage to electrical equipment and systems inside the building.

3. Level 3 (LPS-3):

   This level of protection involves the use of surge protection devices at the point of use for sensitive electronic equipment and systems, such as computers, televisions, and other valuable electronics. LPS-3 provides an additional layer of protection against surges that may enter the building through power lines or communication lines.

It’s important to note that lightning protection systems should be designed and installed by qualified professionals following recognized standards and guidelines, such as those provided by the National Fire Protection Association (NFPA) in the United States (NFPA 780) or the International Electrotechnical Commission (IEC) standard IEC 62305 in many other countries. These standards ensure that the lightning protection systems are effective and safe for the building and its occupants.