What is the primary purpose of service equipment in electrical installations?

The primary purpose of service equipment in electrical installations is to supply electric service to premises. This function is crucial because service equipment is the point where the utility's power supply connects to the building's electrical distribution system. It typically includes components such as the main circuit breaker, fuses, and service entrance conductors, which work together to ensure that electricity is delivered safely and efficiently into the building.

By supplying electric service, the service equipment also establishes the point of control and protection for the electrical system, allowing for essential operations such as metering and disconnecting power when necessary. This ensures that the electrical service is not just available, but also properly managed, playing a vital role in the overall electrical infrastructure. Understanding this function is fundamental to comprehending how electrical systems are designed to power homes and businesses safely and reliably.