What is a load where the maximum current is expected to continue for 3 hours or more called?

The term for a load where the maximum current is expected to continue for three hours or more is referred to as a continuous load. In electrical terminology, a continuous load is typically defined as a load that operates at maximum current for an extended period of time, specifically three hours or more. This classification is important when designing circuits and selecting equipment, as continuous loads require considerations for heat dissipation and capacity to ensure safe and reliable operation.

When dealing with electrical installations, understanding the difference between continuous loads and other types of loads is critical. For instance, non-continuous loads are those that do not draw their maximum current continuously, meaning they may only operate at full current for shorter durations. Intermittent loads are marked by varying periods of operation, often turning on and off, which also differentiates them from continuous loads. Understanding these distinctions helps professionals in the field adhere to safety standards and ensure the correct specifications are applied to electrical systems.