Where does a service entrance end?

A service entrance ends at the service equipment that receives the utility supply and provides the building’s main disconnecting point. The exact boundary depends on the installed service arrangement.

Can a service entrance run underground?

Yes, a service entrance can run underground through conductors and raceway before reaching the meter or service equipment. Burial conditions, entry protection, and connection details affect the installation.

Why might an inspection examine the service entrance closely?

An electrical inspection examines the service entrance because defects at the incoming supply can affect the entire building. Inspectors look for damaged equipment, loose connections, poor bonding, and water entry.

Glossary

What Is a Service Entrance?

A service entrance is the part of an electrical system that connects utility power to a building’s service equipment. It includes the conductors, raceway, meter connection, and entry point where electricity reaches the main disconnect or panelboard. The service entrance separates utility-owned equipment from the building’s wiring and establishes the system’s main supply path.

Quick Facts About Service Entrance

Key Takeaways About Service Entrance

It connects utility conductors with the building’s service equipment.
The entry point and main disconnect require careful inspection.
It is not the same as a feeder or branch circuit.

How Service Entrance Works

Two electricians inspect an open meter panel outdoors, with tools and wires spread across a wooden workbench

A service entrance carries electrical power from the utility connection into the building’s service equipment. The conductors may run overhead or underground, then pass through an approved entry point toward the meter and main disconnect. The service equipment receives the incoming supply before electricity moves into feeders and branch circuits.

Related glossary terms: Panelboard, Feeder, Grounding Electrode.

An inspection follows the path of the service entrance and checks visible conductors, raceway, connections, grounding, bonding, and the enclosure. Service equipment must match the installation and provide a clear means of disconnecting the building supply. A feeder leaves service equipment and supplies another panel or defined load, so its function differs from the incoming service connection.

Gloved hands work inside an open electrical box surrounded by cables, tools, a hard hat, and a multimeter

From the Chris Miller Electric team

When we inspect a service entrance, we trace the incoming conductors from the utility connection to the service equipment. We check entry points, accessible connections, grounding, bonding, and signs of heat or water damage. We also compare the service arrangement with the downstream panel and visible wiring.

Service Entrance in Practice: A Real-World Example

During an electrical inspection, we may find overhead service conductors entering near the meter and continuing to the main panel. We examine the entry fitting, conductor condition, grounding connection, and service equipment enclosure as one connected system.