How much hp engine is required to run 15 hp electric motor?

To run a 15 hp electric motor, you typically need an engine that provides at least 15 hp, but it's advisable to have a bit of extra power to account for efficiency losses and other factors. Generally, an engine rated between 15 to 20 hp would be appropriate, depending on the application and load conditions. Additionally, consider factors like starting torque and duty cycle, which may require even more horsepower in certain scenariOS.