What are the three main types of electrical panels used in installations?

The correct answer identifies the three main types of electrical panels commonly used in installations: main panels, subpanels, and transfer switches.

Main panels serve as the central distribution point for electrical circuits throughout a building; they house the main circuit breaker and other breakers that supply power to various areas. Subpanels, on the other hand, are secondary panels that provide additional circuit capacity or control for specific areas or appliances without overloading the main panel. This setup allows for better management of electric loads and can handle localized demands efficiently.

Transfer switches play a critical role in systems that require backup power, such as during a power outage. They switch the power source from the utility to a generator safely, ensuring that electrical systems can continue to operate without back-feeding into the grid.

Understanding these types of panels is essential for anyone involved in electrical installations, as they form the backbone of how electricity is distributed and managed in residential, commercial, and industrial settings. Each type serves a unique function within the broader electrical system, emphasizing the importance of proper selection and installation for safety and efficiency.