![]() Storms come up the river as a solid front of rain and lightning. Lightning protection may be needed for tall trees on a property, either to protect the trees themselves from damage, or toĪvoid subsequent tree damage to nearby buildings if the tree is stuck.Īs a child on the Rappahannock river in Virginia I watched Lightning protection is also needed for trees Produce very high voltages which can take surprising routes at a property such as following underground tree roots, metal porch railings,Īnd copper or steel building water pipes. Lightning strikes at buildings and other sudden electrical currents (such as a tree touching a high tension power line) To have one at all, since an improperly designed or installed system might actually increase the chances of a building being damaged by Having a properly-designed lightning protection system is very important if you're going You'll notice that modern lightning rods have a short blunt tip and that they are connected to earthīy heavy metal cables, often using braided copper. The earliest lightning rod design, by Ben Franklin in 1752, ended in a sharp pointed trident which may have actually created an electrical field When the tremendous energy of a lightning strike moves through these building components instead of through a desired and safestĬable designed for that purpose, damage to the building is likely, including explosion, fire, or electrical damage.īut lightning protection systems have a confusing history. Often remarkably odd, pathway to earth anyway, perhaps moving on building water piping, electrical wiring, or even through damp If an easier path is not provided for the energy (or current) to flow to earth, the energy from the lightning strike will find its own, ![]() Metal cable from an air terminal or other protection device down to a rod driven into the earth. This means that the energy from a lightning strike is directed along a heavy ![]() Low resistance path for the discharge of lightning energy. Common components receiving extra protection includeĬomputer equipment, televisions, telephones, sump pumps, and wells or well pumps.Īs we mentioned above, a lightning protection system does not prevent lightning from striking it provides a means for controlling it and preventing damage by providing a These components too must be corrosion resistant and strong enough to keepĪre electrical devices installed in or on a building's electrical components and designed to protect electricalĮquipment from the electrical surge that occurs when lighting strikes a nearby power line. Support the air terminals, cables, or other devices in place.
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