How is 'load calculation' defined in electrical engineering?

Load calculation in electrical engineering is primarily defined as a process for determining the required capacity of electrical services needed to support the various loads that a building, facility, or electrical system may impose. This process involves assessing the electrical demand of all devices, appliances, lighting, and other equipment that will be connected to the electrical system. By identifying the total load requirements, engineers can design systems with adequate capacity to handle the anticipated demand safely and efficiently, thus preventing overloads and ensuring reliable operation.

This consideration is fundamental when designing electrical systems, as it informs decisions regarding wire sizes, circuit breakers, transformers, and overall service availability. Having an accurate load calculation helps in meeting building codes and standards while also optimizing energy usage.