230240V

230/240V is a nominal voltage designation used to describe the standard single-phase electrical power supplied to many homes and small businesses in a large part of the world. It refers to the approximate voltage between a live conductor and neutral on typical household circuits. Devices labeled 230/240V are intended to operate safely within a voltage range around 230 volts, commonly with a tolerance of roughly ±10%, which yields about 207–253 V. The dual labeling reflects historical practice and regional variation in naming the same electrical system.

Relationship to broader power systems: In most 230/240V regions, the public distribution network is a three-phase system with a line-to-line voltage around 400 V, which results in about 230 V between each phase and neutral (L-N). This means single-phase appliances and outlets typically deliver around 230 V. Higher-power equipment may use different configurations, such as three-phase connections, to obtain other voltages. Frequency also varies by region (commonly 50 Hz outside North America and 60 Hz in many parts of the Americas), but voltage ratings are defined separately from frequency.

Regional use and standardization: The 230 V nominal value is standardized by international and national bodies, with many countries adopting 230 V as the official nominal voltage for household supply. Older equipment sometimes carries a 240V designation, which remains common on devices designed to tolerate a range that includes both 230 and 240 V. Because of this overlap, many appliances are printed with 230/240V to indicate compatibility across slightly different national standards.

Practical implications: When using appliances labeled 230/240V abroad, ensure the local supply voltage falls within the device’s specified range and use appropriate plugs and adapters if needed. Voltage fluctuations and harmonics can affect performance and longevity of equipment designed for this range.