What Is a Service Drop?
A Service Drop is the overhead electrical connection that carries utility power from a nearby distribution line to a building’s service equipment. It includes the conductors and their support points at the structure. The service drop connects the utility system with the customer-owned wiring that supplies the building.
Quick Facts About Service Drop
Category
Electrical service component
Used for
Delivering utility power to a building
Common confusion
Confused with the entire electrical service
Also called
Overhead Service
Often discussed with
Electrical Service Upgrade, Electrical Safety Inspection
Key Takeaways About Service Drop
- It is an overhead connection from utility distribution equipment.
- Its conductors terminate at the building’s service equipment.
- A service drop is not the same as indoor branch-circuit wiring.
How Service Drop Works

A Service Drop carries electricity from an overhead utility distribution line to the connection point at a building. Conductors cross the space between the utility support and the building attachment. The conductors connect with the service equipment through components such as a weatherhead, service mast, or other approved entry arrangement.
Related glossary terms: Electrical Meter, Disconnect Switch, Load Center.
The utility usually owns the overhead conductors up to its service point, while the property owner may own equipment on the building side. Ownership boundaries can vary by utility and installation. A service upgrade may require changes to the building attachment, conductors, service entrance equipment, or related supports so the complete connection works together.

From the Toledo Electrician team
When we handle an Electrical Service Upgrade, we inspect the service drop as part of the complete service path. We check the overhead conductors, building attachment, service entrance, and connection points for condition and compatibility. We also identify the utility-owned boundary before planning work on customer-owned equipment.
Service Drop in Practice: A Real-World Example
A homeowner planning an Electrical Service Upgrade may have an overhead service drop that connects an outside utility line to the building’s service equipment. The upgrade assessment considers whether the existing connection and attachment support the planned service equipment.
Related Terms
Electrical Meter
An Electrical Meter is a device that measures the electrical energy supplied to a property. The…
Disconnect Switch
A disconnect switch is a device that opens an electrical circuit and separates equipment from its…
Load Center
A load center is an electrical distribution enclosure that receives power from the service and routes…
Line Voltage
Line Voltage is the electrical potential supplied directly by a building’s branch circuit or service conductors…
Toledo Electrician
Have Questions About Service Drop?
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