The electrical service system that delivers electricity from the utility company to a building or property. This system includes various components such as:

1. Service Drop/Service Lateral: The overhead or underground lines that carry electricity from the utility company’s power lines to the building.

2. Meter: A device that measures the amount of electricity consumed by the building.

3. Main Service Panel (Breaker Panel): The central distribution point for electricity within the building. It contains circuit breakers or fuses that protect the electrical circuits.

4. Service Entrance Conductors: Wires that connect the service drop or lateral to the main service panel.

5. Grounding System: A system that connects the electrical service to the earth to ensure safety and prevent electrical shocks.

6. Main Disconnect: A switch or circuit breaker that allows all power to be shut off to the building for safety and maintenance purposes.

In a residential or commercial building, ensuring that the electrical service is properly installed, maintained, and up to code is crucial for safety and efficiency.

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Service installation, particularly in the context of electrical systems, refers to the process of setting up the infrastructure necessary to deliver electrical power from the utility company to a building or property.