How is a load center different from a sub-panel?

A load center is essentially a main distribution point for electricity within a building, designed to receive the service entrance conductors from the utility and then safely distribute that electricity to various circuits throughout the facility. It contains the main circuit breaker and various branch circuit breakers that protect different electrical circuits in the building.

A sub-panel, on the other hand, is a secondary distribution board connected to the load center, allowing for additional circuits to be added and for better management of electrical flow to specific areas or regions within the structure. Sub-panels enhance the electrical distribution by taking the load off the main panel and allowing for localized circuit management.

The distinction between a load center and a sub-panel lies in their roles: the load center is the primary point of distribution, while the sub-panel serves to further distribute electricity to specific areas such as additional rooms, garages, or outdoor spaces where more circuits are needed. This differentiation helps in organizing and managing the electrical system effectively, ensuring safety and compliance with electrical standards.