Minnesota Boiler License Practice Exam 2025 – All-in-One Guide to Passing with Confidence

A second-class engineer is authorized to operate and take complete charge of a boiler plant with certain horsepower limitations. In Minnesota, this restriction is set at 100 horsepower. This means that a licensed second-class engineer can oversee a boiler system that does not exceed this capacity, ensuring safety and efficiency within the operational parameters defined by state laws and regulations.

The concept of horsepower in this context refers to the measure of an engine's power, particularly for steam boilers, which directly relates to the size and capacity of the boiler. Maintaining the operation within the designated limits helps ensure that engineers are adequately trained and competent to manage the systems they operate, which is crucial for preventing accidents and ensuring proper maintenance.

Therefore, the allowance of up to 100 horsepower for a second-class engineer reflects a balance between operational duties and the level of expertise required to handle the potential risks associated with larger or more complex systems.