Overhead service-entrance cables shall be equipped with which device?

• A. Service head
• B. Service cap
• C. Weatherhead
• D. Splice box

Answer: (A)

The main idea is that overhead service-entrance cables need a dedicated termination point that provides both mechanical support and a weatherproof seal as the conductors enter the building. That function is served by a service head, a fitting mounted on the service mast that receives the conductors from the overhead drop and anchors them while sealing the entry to protect against moisture. While a weatherhead is a common component in the overall assembly, the device specified for equipping the overhead service entrance conductors is the service head, since it provides the necessary termination and strain relief at the entry point. A splice box is used only for joining conductors, not for terminating the service entrance where the cables enter the building. A service cap, by itself, does not fulfill the required termination and weatherproofing role.