Lightning Conductor

Lightning conductor conduct a lightning strike from the roof of a structure, by way of heavy copper or aluminum wires, to rods driven into the grounds, thereby protecting the structure they are applied to from the lightning itself. It’s not true that a lightning conductor attracts lightning. They also do not prevent lightning from striking a house or other structure to which they are attached.

Although lightning protection is not a legal requirement for all buildings and structures, the requirements of the Electricity at Work Regulations will apply to most businesses. All newly installed electrical mains systems require surge protection for indirect lightning strikes.

Copper has the best electrical conductivity of any metal, except silver. A good electrical conductivity is the same as a small electrical resistance. Picture 1 A lightning conductor carries the charge safely to ground. Copper wires allow electric current to flow without much loss of energy.

The lightning-rod system is an excellent lightning conductor and thus allows the current to flow to ground without causing any heat damage. Lightning can “jump around” when it strikes. This “jumping” is associated with the electrical potential of the strike target with respect to the earth’s potential.

On taller structures, the area of protection extends only about 30 metres from the base of the structure. Lightning rod types(Left top) Vertical rods or masts up to 15 metres in height create lightning protection zones that extend in a 45° cone from the rod’s tip.

Lightning conductors typically have an upward pointing spike. The other end is attached to Ground through a low resistance band of copper conductor. The aim is to short circuit the electrical charge that builds up in the atmosphere, bypassing the fabric of the building.

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