Which of the following loads would typically be considered a continuous load?

Continuous loads are defined as loads that are expected to run for three hours or more at their maximum rating. In the context of the choices provided, all the examples mentioned represent systems that typically operate continuously, fulfilling this definition.

Fixed electric space heating equipment is installed to maintain a stable temperature, and operates for extended periods, especially in colder environments. This type of heating is usually relied upon for the entirety of a heating season, making it a continuous load.

Similarly, fixed electric space heating equipment for pipelines and vessels is designed to prevent freezing or maintain temperature for the contents being transported or stored. Given that pipelines and vessels can experience low temperatures for long durations, the heating elements must operate continuously to ensure functionality.

Fixed outdoor electric deicing equipment works to melt snow and ice to maintain safety in outdoor environments. This equipment is often activated and remains operational for prolonged timeframes during winter conditions, as it needs to keep surfaces clear of ice and snow.

Since all of these systems function continuously under normal operational circumstances, the correct response encompasses all choices, confirming that they are all classified as continuous loads.