Where can the type and size of overcurrent protection be primarily found?

The type and size of overcurrent protection can primarily be found in the panelboard schedule. This schedule is a detailed reference that lists all the circuits fed by a particular panel, including the specific ratings of breakers or fuses used for overcurrent protection. It serves as a critical resource for electricians, providing essential information about safe operating limits and ensuring that installation complies with electrical codes and safety standards.

In the context of a panelboard schedule, it outlines the amperage ratings of individual circuits and their corresponding protective devices, which ensures that circuits are adequately protected against overloads and short circuits. This information is crucial for maintaining electrical safety, as it helps prevent potential hazards such as overheating and electrical fires.

While the electrical code book provides essential guidelines and regulations regarding overcurrent protection, it does not specify the exact type and size as applied to a specific installation. The main service panel contains the breakers themselves but may not detail their ratings in a way that provides immediate insight into each circuit's protection. A wiring diagram illustrates the layout and connections of the electrical system but does not typically include specific information about overcurrent protection devices. Thus, the panelboard schedule is the definitive source for this information within an electrical installation.