What is a subpanel?

A subpanel, also known as a subdistribution panel, is a smaller electrical panel that is connected to a main electrical panel. It allows for the distribution of power to specific areas or circuits within a building. Subpanels are commonly used in larger buildings or homes with multiple levels to provide additional circuits and accommodate the electrical needs of different areas.

Subpanels are typically installed in a location that is more convenient for accessing circuit breakers and managing power distribution. They are wired directly to the main panel through a feeder circuit, which supplies power to the subpanel. The feeder circuit is equipped with a breaker at the main panel to prevent overloading the subpanel.

Subpanels can also be used to separate power sources, such as providing a dedicated panel for critical equipment or appliances. This helps to prevent power surges or fluctuations from affecting other circuits in the main panel. Additionally, subpanels can be used to expand the capacity of an existing electrical system by adding additional circuits without the need for a complete panel upgrade.

It is important to properly size and install a subpanel according to the electrical needs of the building and in compliance with local building codes. A licensed electrician should be consulted to assess the requirements and ensure the subpanel is installed safely and correctly.