Lightning is one of nature’s most powerful and unpredictable forces. A single strike can cause devastating damage to electrical systems, endangering lives, infrastructure, and equipment. This is where Lightning Arresters step in — acting as the first line of defense against voltage surges caused by lightning or switching operations in the power grid. What is a Lightning Arrester? A Lightning Arrester (also known as a surge arrester) is a protective device used in electrical power systems to divert high-voltage surges safely to the ground , thereby preventing damage to equipment and maintaining system stability. It is not a lightning conductor that attracts lightning but rather a device that protects electrical installations from transient overvoltages once a surge enters the system. How Does It Work? Lightning arresters are typically installed at strategic points like: Transformer terminals Substations Power lines Communication towers When a high-voltage surge (from a li...