What Is a Service Mast?
A service mast is a rigid pipe that carries overhead electrical service wires into a building. It typically rises above the roof and connects to the service equipment below. The mast protects the wires along that path and may support the utility's overhead connection at the building.
Quick Facts About Service Mast
- Category
- Service entrance component
- Used for
- Overhead electrical service
- Common confusion
- Meter socket
- Also called
- Electrical Service Mast
- Often discussed with
- Service Entrance Repair
Key Takeaways About Service Mast
- A mast can also support the overhead service connection.
- A damaged mast may affect nearby service equipment.
- The mast is not the same part as the meter socket.
How Service Mast Works
A service mastweatherhead
Related glossary terms: Service Entrance, Conduit, Meter Socket.
The mast continues down toward the meter socket or other service equipment. Its route depends on the building and the service setup. Brackets hold the mast in place along its route, while a roof seal closes the gap where it passes through the roof.
The mast is part of the service entrance, not the entire assembly. The service entrance also includes the wires and equipment that bring power into the building. A meter socket holds the electric meter, while the mast provides a separate path for the wires.
From the Electrician Pittsburgh team
When we handle service entrance repair, we check how the mast connects to nearby equipment. We also look at its supports and roof seal. Damage at the mast can affect those parts, so we consider the full repair area.
Service Mast in Practice: A Real-World Example
A fallen branch bends the mast above a home's roof. Service entrance repair may involve replacing the bent section and addressing damage at its supports or roof seal.
Related Services
Related Terms
Service Entrance
A service entrance is the electrical equipment that brings utility power into a building and connects it to the main electrical system.
Conduit
Conduit is a tube that holds and protects electrical wires along a route.
Meter Socket
A meter socket is an electrical fitting that holds an electric meter and connects it to the service wiring.
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