Minimising the impact of lightning

The destructive power of lightning can be devastating. It can very easily damage buildings and the ground, and is especially dangerous to any electrical systems. Thankfully, however, there are systems that have been developed which can help to combat the destructive power of this force of nature. There are two distinct lightning protection systems that are designed specifically to protect against lightning strikes.

Perhaps the most common solution is a simple lightning rod. This is simply a metal rod attached to an object, often with a piece of metallic wire, such as copper, leading from it and down to the ground, where it leads into a surge protector. A lightning rod doesn’t attract lightning, but instead provides the path of least resistance for any potential lightning strike. Should lightning strike, it will generally strike the rod. Once struck, the charge will simply travel down the wire and into the protector where its energy will be dissipated and rendered practically harmless. It will also ensure that the lightning does not “jump” and strike elsewhere.

The second type of lightning protection system is the Faraday cage, a conductive cage that channels energy directly through the mesh that is constructed from. Mesh is placed on the roof and conductors are placed on the walls, attached to the cage. Conductors are attached to earthing systems placed in the ground. When lightning strikes, it strikes the mesh and dissipates through the conductors that were closest to the area of the strike, allowing for comprehensive protection without utilising the entire system. This system is generally used for large and sensitive buildings, such as those housing numerous occupants and containing many computer systems.

The lightning protection that these systems offer is quite comprehensive. It ensures that there is no danger of the charge “jumping” and allows for the path of least resistance to be pursued by the strike. With the right types of conductors used, the risk to a building and to the public is rendered minimal in the event of a lightning strike. Instead, the conductors and earthing systems will take most of the energy and dissipate it in a harmless manner.

We specialise in testing and installing lightning protection systems, specifically lightning rods. All installations are completed to the highest standards of safety and ensure that any installations or tests are completed as quickly as possible to render your building safe against the threat of lightning. Whichever system you want, our trained engineers are on hand to dispense vital help and advice with choosing the best system for your protection needs.