A service head, in the context of electrical service installations, typically refers to the same component as a weatherhead or weathercap. It is a weatherproof fitting installed on the exterior of a building, often near the roofline, to protect the service entrance conductors and connections from environmental elements such as rain, snow, wind, and sunlight.
Service heads serve several important functions, including:
- Weather Protection: Service heads provide a weather-tight seal to prevent moisture and other environmental factors from entering the electrical system, which could lead to electrical hazards or damage.
- Service Entrance Conduit Entry: They provide a secure point of entry for the service entrance conduit or pipe, ensuring that the conduit is sealed to maintain weatherproofing.
- Support for Service Conductors: Service heads may include brackets or support systems to hold the service entrance conductors securely, preventing sagging and contact with the building’s structure.
- Attachment Point for Service Drop: In overhead electrical service installations, the service drop wires from the utility’s lines terminate at the service head, where they are securely attached.
- Rain Shield: The design of service heads typically includes a curved shape to shield against rainwater, redirecting it away from the conduit and service entrance conductors.
- Utility Information: Often, utility companies attach a service identification tag or label to the service head, providing essential details about the electrical service, including contact information and the service address.
Service heads play a critical role in maintaining the integrity of the electrical service entrance. Proper installation and regular inspection are necessary to ensure that the weatherproof seal remains intact and that the service entrance conductors are adequately supported and protected from the elements. Any issues with the service head should be addressed promptly to maintain a safe and reliable electrical system.