What are Most Common Lightning Protection Myths?

Unnecessary for Modern Metal Buildings

One of the most prevalent myths surrounding lightning protection is that modern metal buildings are immune to lightning strikes. This is not true. Lightning can strike any conducting path to ground, including metal buildings. In fact, the metal structure of a modern building can actually increase the risk of a lightning strike, as it can attract lightning due to its higher conductivity. A lightning protection system is still essential to protect people and equipment inside the building.

Lightning Cannot Strike Twice

The myth that lightning cannot strike the same spot twice is often cited as a reason to forgo lightning protection measures. However, this is a misconception. The National Weather Service reports that lightning can strike the same location multiple times, and in fact, the Empire State Building in New York City is hit by lightning on average 25 times per year. Lightning can strike the same spot multiple times, especially in areas prone to frequent storms.

Surge Arresters and Lightning Protection

Another myth is that surge arresters can protect against all lightning-related damage. While surge arresters can help protect against voltage spikes caused by lightning, they are not a foolproof solution. Surge arresters can fail if the surge is too powerful or if they are not properly installed or maintained. A comprehensive lightning protection system, including air terminals (lightning rods), down conductors, and surge arresters, is necessary to protect against the full range of lightning-related hazards.