Which phase's color is commonly identified as blue?

In electrical systems, particularly in three-phase systems, the color coding for each phase conductor is standardized to help identify and differentiate between them easily. In this color coding scheme, the B phase is commonly designated with the color blue.

This standardization is essential for safety and accuracy in installation, maintenance, and troubleshooting of electrical systems. Being able to quickly identify which phase is which reduces the risk of errors, such as connecting the wrong phases or performing work on live wires.

In contrast, the other phases have their own specific colors that do not generally include blue. The A phase is typically associated with a different color, while the C phase may be represented with yet another distinct color. The neutral wire, also color-coded differently, typically does not carry a phase designation and is often identified by its own unique color, usually white or gray, depending on the regulations.

Understanding these conventions is crucial for anyone working with electrical systems to ensure compliance with safety standards and to facilitate efficient electrical work.