What is a lightning arrester for a building?/ What is lightning protection system for a building?/ FAQ over lightning arrester
1. What is a lightning arrester?
A lightning arrester is a device used to protect buildings, power lines, electrical equipment, & structures from the voltage surges caused by lightning strikes.
They are installed at the top of the structures to create a passage for the surge voltage from lightning, to flow into the earth.
2. Why do we need a lightning arrester?
When lightning strikes the structures, it passes into the ground by following the lowest resistance path. It might be the walls, power cables, or electronic devices.
A lighting arrester creates a bypass for the safe transfer of the voltage to the ground.
In other words, lighting arresters protect the structures & equipment from the damage caused by the lightning strike.
In high-rise buildings, it is a must to install the arresters, as there is a high probability of lightning strikes or damages caused by the surge voltage.
3. What is the cost of a lightning arrester for a home?
The cost of the conventional lightning arrester depends upon the coverage radius, type of alloy or metal, no. of spikes, & size of the device.
4. Where should we place a lightning arrester?
The lightning arrester rod should be placed at the highest elevation of the structure. It should be at least 2 meters above the building top to fully conduct the voltage surge through its cable connector.
The grounding cable is connected to the base plate of the arrestor rod & the other end is connected to the grounding terminal.
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