yksivaihejärjestelmiin
Yksivaihejärjestelmiin refers to single-phase electrical systems. These are the most common type of electrical power distribution used in homes and small businesses. In a single-phase system, the alternating current (AC) flows back and forth along two wires: a phase wire and a neutral wire. The voltage in the phase wire alternates sinusoidally with respect to the neutral wire. This alternating voltage drives electric current through connected appliances.
The primary advantage of single-phase systems is their simplicity and lower cost compared to three-phase systems.