Why is lightning rod made of iron?
The lightning rod, in fact, should be called a lightning bolt. The function of the lightning rod is to catch the current generated by lightning with a lightning arrester (lightning rod), and then pass it down to the grounding electrode which is buried in the ground, so that the current is introduced into the ground to ensure the safety of the building.
Decorative lightning rod made of iron in football has a better connection because the buildings are connected with steel only made of iron in order to better and better the overall architecture of the electric welding connection is I just do this
Despite recent lightning from the building, and even some lightning belt also concealed in the top of the building, but it is because of the lightning arrester to the metal, the lightning current, in order to catch the current, so the non metal building from the current impact. Since the current flows along the metal conductor, the non-metallic object will not flow through the current and will not harm the building.
Because the iron conductive, and the price is cheap, large ball is in order to better attract lightning, prevent the lightning to the place
The building's lightning rod is generally galvanized round bar, the lead line uses the concrete reinforcement, the grounding electrode adopts the steel bar in the building foundation, sometimes also in the periphery of the building adds a circle of galvanized flat iron. I don't know how high the lightning temperature is, but the iron lightning rod will not be melted. Otherwise, the national building code will not allow the iron to be used as the lightning rod.
