What is the purpose of a motor nameplate?

The purpose of a motor nameplate serves multiple functions, but one of its primary roles is to indicate horsepower rating. This rating is crucial because it defines the motor's output capacity, which helps in determining whether the motor is suitable for a specific application or task. The horsepower rating informs electrical contractors and engineers about how much mechanical power the motor can deliver under optimal operating conditions, allowing them to select the right motor for their needs.

A motor nameplate includes various other specifications like voltage, current, efficiency, and sometimes maximum operating temperature, but its primary function in terms of selection and application remains the horsepower rating. This information enables professionals to ensure that the motor they are using will not only perform adequately but also operate within its designed parameters, thereby promoting efficiency and longevity in its use.