Yksifaasista

Yksifaasista is a Finnish term that translates to "single-phase" in English. It primarily refers to electrical systems that utilize a single alternating current (AC) waveform. In a single-phase system, the voltage and current vary sinusoidally over time, oscillating between positive and negative values. This is in contrast to three-phase systems, which employ three separate AC waveforms that are phase-shifted from each other.

Single-phase power is commonly used in residential and small commercial buildings. It is sufficient for powering most household appliances and lighting. The typical voltage for single-phase power in many regions is around 120 volts or 230 volts, depending on the country. The wiring for a single-phase system typically involves two conductors: a live wire and a neutral wire. Sometimes a ground wire is also included for safety.

The generation and distribution of single-phase power are simpler and less expensive than three-phase systems, which is a key reason for its widespread adoption in lower-power applications. While it is adequate for many purposes, single-phase power is less efficient for high-power industrial machinery or large electric motors, where three-phase power is preferred due to its more consistent power delivery and ability to start and run motors more effectively. The term yksifaasista is therefore a direct descriptor of this fundamental electrical configuration.