How many phases are required to supply 3 phase power when using a Delta feeder?

To supply 3 phase power using a Delta feeder, three phases are essential. A Delta configuration consists of three windings connected in a closed loop, forming a triangle shape, with each phase represented by one side of the triangle. This arrangement allows for the generation and distribution of three-phase power, which is commonly used in industrial and commercial power systems due to its efficiency and ability to deliver constant power.

Each phase in the Delta system carries a current and contributes to the overall power supply. The three-phase system is crucial for balancing loads and minimizing electrical losses, which is especially important in large-scale applications. A Delta feeder effectively utilizes all three phases to deliver power, ensuring that the system operates smoothly and reliably.

In contrast, using only one or two phases would not provide the full benefits of three-phase power. A single phase would result in unbalanced loads, while two phases would be insufficient for a complete three-phase power system. Therefore, the correct response confirms that three phases are required to supply 3 phase power when using a Delta feeder.