What does the term "service entrance" refer to?

The term "service entrance" refers specifically to the point at which electrical power enters a building. This is a critical aspect of electrical installation because it marks where the utility power supply connects to the building's electrical system. The service entrance typically includes components such as the meter, the main disconnect switch, and the entrance conductors that carry electricity from the utility line into the electrical panel of the building.

Understanding the service entrance is vital for ensuring that the electrical supply is safely and effectively managed when it enters the property, adhering to code requirements and safety standards. It often involves additional considerations for grounding and bonding to protect the electrical system and ensure the safety of the occupants. Recognizing this point in the electrical infrastructure helps in troubleshooting, maintenance, and compliance with local electrical codes.