What type of load is usually given different considerations in load calculations?

Continuous load is given different considerations in load calculations due to its nature and impact on the electrical system. A continuous load refers to a load that is expected to run for three hours or more and typically requires careful assessment of the system's capacity to ensure safety and reliability. Continuous loads must be accounted for at a higher percentage of their rated capacity when determining the service and feeder sizes, often at 125% of the load's full capacity, to prevent overheating and to ensure that the system can handle the demand over an extended period.

In contrast, fixed loads remain constant and can be calculated more straightforwardly without needing adjustments for long-duration usage, while variable loads can fluctuate and thus present different considerations. Intermittent loads are only active for specific periods and are not continuously drawing power, hence they do not carry the same implications for system capacity as continuous loads. Therefore, the distinct characteristics of continuous loads warrant specific adjustments in calculations to ensure system integrity and operational efficiency.