What does the term "service entrance" refer to?

The term "service entrance" specifically refers to the location where electrical power enters a building. This is a critical point in any electrical system, as it is where the utility supply connects to the interior wiring of the structure. The service entrance typically encompasses the main service panel, which distributes electricity throughout the building, and includes protective devices such as circuit breakers or fuses that safeguard the entire electrical system.

Understanding the concept of a service entrance is important for electricians and engineers, as it dictates how power is managed safely and efficiently in a building. The components involved in the service entrance must be compliant with local electrical codes and standards to ensure safety and functionality. This knowledge is vital for the design and installation of electrical systems and contributes to the overall effectiveness of electrical service in any structure.