In a three-phase system, what advantage does it provide over a single-phase system?

In a three-phase system, the primary advantage over a single-phase system is that it provides more power and efficiency. This is due to the fact that three-phase systems can deliver power continuously, with power delivery being more stable and balanced compared to the pulsating nature of single-phase systems.

Three-phase systems also allow for smaller conductors to carry the same amount of power as larger conductors in single-phase systems, resulting in reduced resistive losses and thus improving overall efficiency. This capability means that three-phase systems can be used to drive larger motors and more substantial loads, making them ideal for industrial and commercial applications. This increased power potential leads to better performance in electric motors, which can operate more smoothly and with higher torque.

In summary, while there are various other factors at play in system design and costs, the enhancement of power delivery and efficiency remains a definitive advantage of a three-phase system.