Standardized symbols are used to ensure clarity and consistency across all construction drawings. While a comprehensive legend is always necessary, here are a few of the most common symbols you will encounter:

• Transformer: A zigzag or two concentric squares, representing a device that changes voltage levels.

• Circuit Breaker: A square with a diagonal line through it, or an eyeless smiley face, representing an automatic switch that protects the circuit from overcurrent.

• Disconnect Switch: A simple open switch symbol, representing a manual device used to isolate a section of the line.

• Fuse: A rectangle with a line running through it, representing a protective device that melts and opens the circuit in case of a fault.

• Conductor: A single line representing the wire or cable. The number of parallel conductors or phases is often noted next to the line.

Understanding these symbols is crucial for safe and efficient work. Our equipment at Ningbo Changshi is designed to work with all standard distribution line components, ensuring seamless integration into any project.