Which combination is considered service equipment?

Which combination is considered service equipment?

• A. Service disconnecting means
• B. Panelboard
• C. Meter socket
• D. A and B

Answer: (D)

In service equipment, focus on what actually controls and distributes power inside the building and provides protection. The main service disconnecting means is what you shut off to disconnect all power, and the panelboard is where the building’s branch circuits are fed and protected by overcurrent devices. The meter socket, while part of the overall installation, is metering equipment typically owned by the utility and sits outside the service equipment boundary. So the combination of the service disconnecting means and the panelboard is the service equipment.

In service equipment, focus on what actually controls and distributes power inside the building and provides protection. The main service disconnecting means is what you shut off to disconnect all power, and the panelboard is where the building’s branch circuits are fed and protected by overcurrent devices. The meter socket, while part of the overall installation, is metering equipment typically owned by the utility and sits outside the service equipment boundary. So the combination of the service disconnecting means and the panelboard is the service equipment.