: a panel that is part of a larger panel: such as. a : a group of persons selected from the members of a panel to perform a specific task appointed two advisory subpanels a subpanel report.

What's the difference between a sub panel and a main panel?

A main panel is an installed box where the power from the utility company enters the premises. A subpanel is an installed features that acts as a middle ground for the main panel and other types of circuits that are connected to your property.

Can I use a main breaker panel as a subpanel?

There’s no problem with having a main breaker in a subpanel. It’s required if your panel is in a separate building and has more than six breakers, but there’s nothing prohibiting it in any other case.