Subpanels, what are they used for? Are they used for underground installations? Well, maybe in a basement, but realistically, they are used to supplement the existing electrical panel in your home called the main electrical panel. Subpanels can be used to supply power to areas like room additions, out buildings, barns, sheds, and garages. The great things about them is that by running a single set of wires to the subpanel, it can then distribute power to that area without the need of running each individual circuit all the way from the main panel, which by the way, could be a long distance and would cost you a lot in material costs.
Adding a subpanel can defer the cost of replacing an older panel that has run out of circuit breaker space as well. By simply adding a subpanel, you can add many more circuit breaker openings and circuits to your home. But, keep in mind, you may not have the capacity to add just any old size subpanel to your home. That will depend on what size the main breaker is and the load already connected to it.
There are certain rules and regulations that are covered in the National Electrical Code (NEC) that can guide you to a safe installation of a subpanel. The question remains, "Are you ready to learn more about subpanels?