The area of a conductor is measured in what units?

The area of a conductor is measured in units such as square millimeters (mm²), circular mils, or square inches (in²). These units are essential for calculating the conductor's properties, such as its resistance and ampacity, which determines how much electrical current the conductor can safely carry without overheating.

Square millimeters and circular mils are particularly common in electrical engineering, as they provide a standardized way to specify conductor cross-sectional areas, which is crucial for ensuring that installations comply with safety regulations and perform effectively.

Using the correct units helps in maintaining consistency and accuracy in calculations related to electrical installations. For instance, the circular mil is specifically used in American wire gauge (AWG) specifications, making it a vital metric in the U.S. electrical industry.