Lightning Arrester Poles. A metallic rod (usually copper) that protects a structure by intercepting lightning strikes and guiding their current into the ground. The lightning energy voltage is intercepted by lightning arrestor poles, which provide a safe path for lightning currents into the ground. Providing a direct path to the ground, they prevent damage to your home from fire, explosion, and electrical surges caused by lightning strikes, not decreasing the likelihood of your home being struck. Lightning rods are designed to do one thing very well. A lightning strike will be more likely to hit the rod than its original target if it occurs within a small area. There is no fire because the energy contained within is dispersed safely to the ground.
Lightning Arrester Poles and associated grounding cables serve as lightning protection because they divert current from nonconducting parts of a structure, so it follows the path of least resistance and passes harmlessly through the rod and cables. By passing an electric current through non-conducting materials, they are heated, resulting in fires and other damages. Lightning rods provide cones of protection under 30 metres in height, with the ground radius approximately equal to their height above ground. Most taller structures have a protective zone that extends only about 30 metres from the base.
Worldwide, there are more than 2,000 thunderstorms at any given time. Lightning flashes are produced by these storms around 100 times per second, with potentials of up to a billion volts, currents ranging upwards of 200,000 amps, and temperatures exceeding 30,000 degrees Celsius.
Lightning can damage electrical wiring in your home, causing your power to go out. Lightning bolts that pass through your home are extremely hot and can ignite materials such as roof trusses and insulation. In a thunderstorm, refrain from bathing, getting wet, taking a shower, or doing any other activity that involves water. Lighting can pass through plumbing. Do not use any electronic equipment. Electrical systems and television and radio reception systems can become lightning conduits.
A lightning protection system is needed to prevent harmful electrical surges and possible fires caused by lightning entering a structure via wires or pipes as well as protecting a structure from direct lightning strikes. Gas piping may also need to be protected from lightning.