What are the two main types of loads considered in load calculations?

The two main types of loads considered in load calculations are continuous loads and non-continuous loads. Continuous loads refer to electrical loads that are expected to run for three hours or more during a specific operating period. Accurate accounting of these loads is crucial for ensuring that electrical systems can safely and efficiently handle the demand without overloading circuits. In contrast, non-continuous loads represent loads that do not operate for an extended period, making them less critical in terms of sustained capacity but still important for overall load calculation.

Understanding the distinction between these two load types helps in designing electrical systems that appropriately accommodate varying demand scenarios, ensuring reliability and safety in installation and operation. The differentiation aids in determining appropriate conductor sizes, circuit breakers, and panels needed to support these loads without risking overload, which is essential in any electrical design process.