Should lightning arresters be installed at every normal open point and at the end of underground primary lines?

Installing lightning arresters at every normal open point and at the end of underground primary lines is important for protecting the electrical system from voltage surges caused by lightning strikes. These surges can induce high voltage in the lines, potentially damaging equipment and leading to power outages.

By placing lightning arresters at strategic locations, such as open points in the distribution network and at the terminations of underground lines, the system can effectively redirect excess voltage to the ground, safeguarding transformers, line equipment, and ultimately maintaining reliability in service.

Moreover, including lightning arresters enhances the overall insulation coordination in the system, as they provide a controlled path for lightning-induced currents, helping to prevent damage and ensuring safety for both the equipment and personnel working on the lines.

This practice is in accordance with industry standards and guidelines for lineman safety and infrastructure durability, which recognize that proper surge protection is essential in preventing extensive damage and service disruption.