Which of the following is NOT a key factor to consider when choosing a conductor?

When selecting a conductor for electrical applications, key factors include line voltage, mechanical strength, and the amount of power to be transmitted. All of these factors directly impact the performance and safety of the electrical system.

Line voltage is crucial as it determines how much insulation and conductor material is needed to safely handle the electrical load without risk of overheating or failure. Mechanical strength is important to ensure that the conductor can withstand environmental stresses such as wind, ice, or any mechanical tension during installation and operation. The amount of power to be transmitted influences the size and type of conductor needed to handle the current without excessive losses.

While flexibility may play a role in specific applications, such as in overhead lines or for specific installation scenarios, it is not a primary determinant when choosing a conductor overall. The focus is typically more on the electrical and mechanical characteristics related to performance under load rather than how flexible the conductor is.