What is a lightning arrester for a building?/ What is lightning protection system for a building?/ FAQ over lightning arrester

True Power Limited
2 min readMay 19, 2023

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1. What is a lightning arrester?

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?

Lightning Protection System

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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True Power Earthings Private Limited

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True Power Limited

True Power Group, renowned for India's No.1 Chemical Earthing & Lightning Arresters with a total of 8 different verticals under their Flagship, is available