Typically, motors of 100 horsepower or less should not be started more than how many times per hour?

Motors of 100 horsepower or less are generally designed with specific operating cycles in mind to ensure efficiency and longevity. Starting a motor puts a significant amount of stress on its components because the initial current draw, known as inrush current, can be several times higher than the motor's rated current.

Typically, allowing a motor to start four to five times per hour provides a balance that minimizes wear and avoids overheating, while also accommodating operational needs. Frequent starting beyond this recommendation can lead to overheating, increased wear and tear, potential failure of the motor, and also negatively affect system stability.

In a practical setting, adhering to this guideline helps ensure that the motor operates within its intended limits, performs efficiently, and maintains a longer service life, while also minimizing unnecessary energy consumption that can occur with excessive starting cycles.