Which type of drawing is typically not used to indicate actual component layout?

A one-line diagram is a simplified representation of an electrical system that uses single lines and symbols to show the major components and connections within an electrical system. It focuses on the overall structure and flow of electrical energy rather than the precise physical layout of individual components. Therefore, while it effectively conveys important system information, it does not depict the actual layout of components in a way that can guide installation.

In contrast, pictorial drawings provide a realistic view that represents the components as they would appear in reality, making it easier to visualize their arrangement. Wiring diagrams, on the other hand, show the connections between various components in detail, while functional diagrams illustrate how different systems or components interact on a functional basis. Since these types of drawings can provide specific information about actual component placement and connections, one-line diagrams stand out as the type that is least suited for indicating the real-world layout of components.