In terms of efficiency, how does three-phase power stack up against single-phase power?

Three-phase power is generally more efficient than single-phase power for a variety of reasons. One of the key advantages of three-phase systems is that they can deliver more power using smaller conductors, which reduces the amount of energy lost as heat in the wires due to resistance. In a three-phase system, the power is delivered in a more continuous and balanced manner. This leads to a smoother operation of electric motors and other machinery, as they can run at higher efficiency with less vibration and wear.

Additionally, three-phase systems provide better load distribution across the three phases, which helps in managing power flow and reduces the risk of overloads in any single phase. This also allows for smaller and lighter transformers and distribution equipment to be used, which can lead to further efficiency improvements. The overall result is a system that can handle larger loads and operate more effectively under varying conditions, leading to higher overall system efficiency compared to single-phase power.