In a switchyard, the common conductors to which circuits are connected are called?

• A. Neutrals
• B. Buses
• C. Transformers
• D. Regulators

Answer: (B)

The common conductor in a switchyard is called a bus (busbar). A bus provides a shared connection point for multiple circuits, feeders, breakers, and transformers, allowing power to be routed and distributed to many paths from one central, high-capacity conductor. It’s designed to carry large currents and to be a stable point for protection devices to locate and coordinate with.

Neutrals are individual return paths for circuits, not the main shared conductor in a switchyard. Transformers connect to the bus to receive or deliver power, but they are devices, not the common conductor themselves. Regulators control voltage levels, not the common distribution path. So the term that best fits the description is bus.