What Is a Service Entrance?
Service Entrance is the point where electrical power enters a building from the utility system and connects to the building’s electrical equipment. It includes the conductors, fittings, disconnecting equipment, and other components that carry and control incoming power before electricity moves through branch circuits serving lights, outlets, appliances, and equipment.
Quick Facts About Service Entrance
Category
Electrical service component
Used for
Connecting utility power to building wiring
Common confusion
The service entrance is not only the meter
Also called
Electrical service entrance, Service entrance equipment
Often discussed with
Electrical Service Upgrade
Key Takeaways About Service Entrance
- It marks the transition between utility power and building wiring.
- Its components support incoming power before circuits distribute electricity.
- It is not the same as a load center or meter alone.
How Service Entrance Works
Service Entrance equipment receives power from the utility connection and routes it toward the building’s main disconnect and distribution equipment. Service-entrance conductors carry incoming power, while enclosures, raceways, connectors, and grounding components support the connection. The arrangement depends on the building layout and the location of the utility connection.
Related glossary terms: Electrical Meter, Load Center, Disconnect Switch.
The service entrance sits before equipment such as the load center, which sends power to individual circuits. A service disconnect provides a controlled point for shutting off incoming power during work or an emergency. During an electrical service upgrade, the condition and capacity of these connected parts must be considered together, because changing one component can affect the rest of the service.
From the Center Electric Service team
When we assess a service entrance, we inspect the incoming conductors, connections, enclosures, grounding path, and relationship to the main distribution equipment. We also look for heat damage, corrosion, loose terminations, and outdated components that could affect an electrical service upgrade.
Service Entrance in Practice: A Real-World Example
A Riverside homeowner planning an electrical service upgrade may have utility conductors entering an exterior meter enclosure before power reaches the main disconnect and panel. We examine that complete path so the upgraded equipment matches the existing connection and building layout.
Related Services
Related Terms
Electrical Meter
An electrical meter is a device that measures the electricity entering a building from the utility…
Load Center
A Load Center is an electrical enclosure that receives power from a service entrance and distributes…
Disconnect Switch
Disconnect Switch is a manually operated device that separates electrical equipment from its power supply. The…
Electrical Grounding
Electrical grounding is a protective connection between an electrical system and the earth or another approved…
Center Electric Service
Have Questions About Service Entrance?
Contact Center Electric Service for practical guidance on Service Entrance and related electrical services work in Riverside.