Apr 01, · It is better stated to say that lightning rods provide a low-resistance path to ground that can be used to conduct the enormous electrical currents when lightning strikes occur. If lightning strikes, the system attempts to carry the harmful electrical current away from the structure and safely to ground. The system has the ability to handle the enormous electrical current associated with the strike. If the . Before explaining how the lightning rod works, we would like to context it through the history and introduce you the possible effects of lightning strikes. History of lightning rod On June the 15th, , during a stormy day in Philadelphia, an inventor scientist named Mr. Benjamin Franklin blew up a metal frame kite tied with a silk cord to.
By: John Zavisa. Lightning rods were originally developed by Benjamin Franklin. What is a safety action plan lightning rod is very simple -- it's a pointed metal rod attached to the roof of a building.
The rod might be an inch 2 cm in diameter. It connects to a huge piece of copper or aluminum wire that's also an inch or so in diameter. The wire is connected to what gas is in bbq bottles conductive grid buried in the ground nearby. The purpose of lightning rods is often misunderstood.
Many people believe that lightning rods "attract" lightning. It is better stated to say that lightning rods provide a low-resistance path to ground that can be used to conduct the enormous electrical currents when lightning strikes occur.
If lightning strikes, the system attempts to carry the harmful electrical current away from the structure and safely to ground. The system has the ability to handle the enormous electrical current associated with the strike. If the strike contacts a material that is not a good conductor, the material will suffer massive heat damage.
The lightning-rod system is an excellent 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.
The lightning can strike and then "seek" a path of least resistance by jumping around to nearby objects that provide a better path to ground. If the strike occurs near the lightning-rod system, the system will have a very low-resistance path and can then receive a "jump," diverting the strike current to ground before it can do any more damage. As you can see, the purpose of the lightning rod is not to attract lightning -- it merely provides a safe option for the lightning strike to choose.
This may sound a little picky, but it's not if you consider that the lightning rods only become relevant when a strike occurs or immediately after a strike occurs.
Regardless of whether or not a lightning-rod system is present, the strike will still occur. If the structure that you are attempting to protect is out in an open, flat area, you often create a lightning protection system that uses a very tall lightning rod.
This rod should be taller than what happens when lightning strikes a lightning rod structure. If the area finds itself in a strong electric field, the tall rod can begin sending up positive streamers in an attempt to dissipate the electric field.
While it is not a given that the rod will always conduct the lightning discharged in the immediate area, it does have a better possibility than the structure.
Again, the goal is to provide a low-resistance path to ground in an area that has the possibility to receive a strike. This possibility arises from the strength of the electric field generated by the storm clouds. Ben Franklin what happens when lightning strikes a lightning rod not struck by lightning. Contrary to popular school teachings, Mr.
Franklin was very lucky to survive his experiment. Franklin would surely have been killed. As we all know now, his experiment was extremely dangerous and should not be repeated. Prev NEXT. Forces of Nature.
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Lightning rods (and the accompanying protection system) are designed to protect a house or building from a direct lightning strike and, in particular, a lightning-initiated fire. Note that lightning protection systems do not prevent lightning from striking the structure, but rather intercept a lightning strike, provide a conductive path for the harmful electrical discharge to follow (the appropriate UL-listed . Lightning Rods While we don’t offer lightning rod installation, some companies specialize in this area. Most people are probably familiar with the general idea of a lightning rod, a large metal post staked to the roof, so I’ll leave the details up to a lightning rod installation company. May 01, · There are several things to consider when installing lightning rods on your home. In the event of a strike, a lightning safety system is designed to filter the flow of electrical current safely away from the home. So, ensuring it is installed correctly is key. Perhaps most important is having your lightning protection system grounded properly. “What happens if lightning strikes my metal roof?”.
We often get asked whether metal roofs are more likely to get struck by lightning. We install high quality aluminum and steel metal roofs.
Aluminum and steel, like most metals, are conductive of electricity. So logically, it seems metal would attract lighting. The truth is however, a metal roof is no more or less likely to get struck by lightning. This is because in a thunderstorm, lightning strikes the highest point. In fact, building strikes are rare. More often, lightning will strike a nearby tree or telephone pole.
However, if your home is the highest structure in your surrounding area, then your risk for a lightning strike is higher. In most situations, it is not necessary to install lightning rods on your metal roof. Lightning strikes to homes are rare.
If your roof is the highest point of a surrounding area, you may consider having a lightning safety system installed on your home. You can install lighting rods yourself, however we recommend you hire a professional. There are several things to consider when installing lightning rods on your home. In the event of a strike, a lightning safety system is designed to filter the flow of electrical current safely away from the home.
So, ensuring it is installed correctly is key. Perhaps most important is having your lightning protection system grounded properly. A metal roof is the safest roof in the event of a lightning strike. There are a few reasons for this. A metal roof does not attract lightning. If your home is struck by lightning, a metal roof will diffuse electricity away and cannot catch fire, keeping your home safer in a thunderstorm. Maintained by StoryRidge Marketing.
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