How TL BL and WL got their names?

TL, BL, and WL typically refer to different types of voltage levels in electrical engineering, specifically for transmission lines. TL stands for "Transmission Line," which conveys high voltage electricity over long distances. BL, or "Bus Line," refers to a conductor that serves as a common connection for multiple circuits. WL, or "Distribution Line," pertains to lower voltage lines that distribute electricity to end consumers. Each name reflects its function and the role it plays in the electrical grid system.