Lightening is a natural electrostatic discharge during which two electrically charged regions temporarily neutralize themselves and cause instantaneous release of an average of one gigajoule energy. Typical lightning flash is about 300 million volt. It may produce a wide range of electromagnetic radiation. It is the brilliant flashes of visible light in the form of black body radiation. The cause of Thunder, which developed as gas in the vicinity of the discharge, experienced a sudden increase in pressure. Lightning occurs during thunderstorms and other types of energetic weather systems. There are mainly three kinds of lightning. They are a single thundercloud(intra cloud),between two clouds( cloud to cloud), between a cloud and the ground.
In early stages air acts as an insulator between positive and negative charges in the cloud. When the opposite charges build up ,this insulating capacity of the air breaks down and rapid discharge of electricity that we know as lightning. It temporarily equalizes the charged regions in the atmosphere.Lightning is the oldest observed natural phenomena.It can be seen in volcanic eruptions.
Energy from the lightning channel heats the air to around 50,000 degree Fahrenheit. It causes air to explode outside. Thunder can be heard upto 25 miles away from lightning discharge. Light travels through the air million times faster than sound. Lightning flashes produced by storms start inside the cloud. If a lightning flash strikes the ground a channel develops downward toward the surface. When it is less than roughly 100 yards of ground , trees and bushes and buildings start sending up spark to meet it.
Your home is a safe shelter during lightning storms, but one third of lightning strike injuries occur indoors. Do not bath, shower or wash dishes during a thunderstorm. Lightning can travel through building plumbing. The risk of lightning through plumbing might be less with the plastic pipes than with metal pipes. Do not use electrical outlets such as computers ,laptops, washers, dryers, stoves at the time of lightning. Stay away from doors,Windows. Do not lie on concrete floors during thunderstorms. Corded phones are not safe to use during lightning.
You should check the weather forecast before participating in outdoor activities. Find a safe shelter when you hear thunder. Crouching to the ground can reduce your chances. Immediately get off elevated areas. Never lie flat on the ground .Crouch down in a ball-like position. Never shelter under an isolated tree.stay away from objects that conduct electricity like wire fences, power lines, windmills etc. Avoid staying in open vehicles.
Properly installed Surge protection devices combined with a good grounding system help to protect electronics and appliances from severe electrical surges. It helps to divert the Surge to the ground around your home. It is not intended to prevent strike ,but to provide a safe path on which the current can be safely directed to the ground.
Air terminals are lightning rods.it is inconspicuous copper that is vertically mounted on the roof at regular intervals. It acts as strike receptors. constructed of aluminium braided cables connected air terminals to other components. Bonding joins metallic bodies and grounded building systems to main conduct to ensure conductivity.
We can see a safe lightning protection device. It is a surge protection device. It is a lightning arrest. It protects our home.It is a metallic structure material. It is an LSG TGD 30 model. It is made in France. It has 75 meter radius coverage.it is the safest method to prevent lightning. You can fix it in the toppest area.Most of the houses use metal objects. It may cause lightning. So you can use it in your home.
It has 3 parts.terminal,non conductive glass pipe,GI pipe.Terminal is made with stainless steel. It is imported material from France.Non conductive glass pipe is used to connect terminal to GI pipe. Terminal contains a flash receiver portion. Three models are available. TGD 60,TGD Pro and TGD 30.They should be fit for lightning arrest.They have all India production. They are tied up with railways.
They use v guard 50square mm thick insulated copper cable.it has ISI mark per meter.do not use copper strips. You can use copper cables. They used non conductive FRP clamps to clamp it. These are quality materials. It has a 15 to 20 years life.You should replace earthing after 15 years.It is totally maintenance free.They use Teksai model for small houses.LSG has two variants.Alltec is the another model.It is supreme brand. It has 3 models. It is a one time investment. They have a website. You can see all packages through this website. Surge protection devices are important. It has a 1 year warranty. It has Rs 8000.
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