Which of the following statements is correct about conductor sizing?

Conductor sizing is a critical aspect of electrical system design, particularly in low voltage communication systems. The statement that it should include both continuous and non-continuous loads for accuracy is correct because proper sizing ensures that the conductors can handle the combined load without overheating or exceeding their capacity.

In practice, continuous loads are those that are expected to run for three hours or more, while non-continuous loads do not have this duration requirement. By accounting for both types of loads, the conductor's ampacity can be accurately assessed, ensuring that it can handle potential surges in demand and maintain safety and efficiency in operation. This approach mitigates the risk of fire hazards and equipment damage due to overheating.

When sizing conductors, the goal is to select a conductor that remains within its rated capacity under various operational conditions. This not only involves considering the types of loads but also factors such as temperature, insulation type, and installation conditions. By considering both continuous and non-continuous loads, the sizing process reflects the actual usage patterns and helps in creating a reliable and safe electrical system.