An underground power line locator is a specialized electronic device used to detect, trace, and pinpoint the location of buried electrical cables and other metallic utilities. It is an absolutely essential tool for damage prevention and worker safety before any excavation or digging begins. Without it, crews risk striking a live power line, which can lead to severe injury, costly equipment damage, and widespread power outages. In many countries, using a locator is a legal requirement before any ground is broken.