What do graphic symbols depict in a schematic diagram?

Graphic symbols in a schematic diagram are specifically designed to represent electrical connections and components. These symbols serve as a standardized language that allows engineers, technicians, and anyone working with electrical systems to understand the functions and relationships of various parts in a circuit without needing to see the physical layout.

The key role of schematic diagrams is to illustrate how different components like resistors, capacitors, and switches interact with one another and how they are interconnected. This visual representation simplifies the design and troubleshooting of electrical systems, making it easier to analyze and implement electrical circuits.

While measurements and units might be part of a broader discussion or included in certain diagrams, they are not the primary function of graphic symbols in schematic diagrams. Similarly, physical layouts and designs refer to the actual arrangement of components in a physical space rather than their symbolic representation. Safety protocols and procedures may be critical in the context of electrical work, but they would not typically be depicted through graphic symbols in a schematic, as the symbols focus on the technical aspects of the circuit rather than safety guidelines.