A subpanel is a smaller electrical panel that distributes power to specific areas or circuits within a building. It connects to the main electrical panel and helps manage the electrical load more efficiently. Subpanels are often used in larger homes or commercial buildings to provide power to separate sections, such as a garage or workshop. Installing a subpanel can enhance safety and convenience by reducing the distance electricity must travel, which can minimize voltage drop. Additionally, it allows for easier circuit management and can accommodate future electrical needs without overloading the main panel.