Which of the following is considered a non-continuous load?

In load calculations, a non-continuous load is defined as a load that operates for less than three hours at a time at maximum rating. The correct choice, which identifies a non-continuous load, is the electric stove used occasionally. This is because the electric stove is not typically in consistent use and would only draw power for limited periods during cooking activities, making it non-continuous.

Understanding the distinction between continuous and non-continuous loads is essential in load calculations. For example, a lighting system activated during events may seem temporary but can be considered continuous if it runs for long periods during those events. Similarly, an HVAC system runs year-round, categorizing it as a continuous load, and a refrigerator operates continuously to maintain its cooling function, making it a continuous load as well.

In contrast, the occasional use of an electric stove justifies its classification as a non-continuous load, reflecting the nature of its intermittent operation. This knowledge is vital for accurately calculating load requirements and ensuring safe and efficient electrical system designs.