What is a common cause of motor overload?

Motor overload occurs when a motor is subjected to excessive current that exceeds its rated capacity, which can lead to overheating and potential failure. Each of the factors mentioned contributes to this condition in different ways.

For instance, an incorrect voltage supply can lead to an imbalance in the operational characteristics of the motor. If the voltage is either too low or too high, it alters the performance of the motor, often causing it to draw more current than normal.

High ambient temperatures can also significantly impact a motor’s ability to dissipate heat effectively. When the surrounding temperature is elevated, it reduces the thermal capacity of the motor, making it more susceptible to overheating under normal load conditions.

Mechanical binding is another critical aspect that can cause motor overload. When there is friction in the motor's components or if the load is jammed or obstructed, the motor has to work harder to maintain its performance. This increased effort causes it to draw more current, which can lead to overheating and potential motor damage.

Considering these factors collectively highlights the multifaceted nature of motor overload, affirming that all of these elements can indeed contribute to the condition, making the option that includes all of them the most accurate choice.