Construction Monkey

Electrical Motor Calculation

Easily Calculate Lost Hours on Future Work

Electrical Motor Calculator

The Construction Monkey Motor calculator lets you figure out electrical characteristics of your system given a specific motor. By inputting horsepower, motor efficiency, power factor, and system voltage the system will calculate the disconnect size, feeder size, and starter size.

Make your selections below and the form will automatically update the values.

Enter Motor Information



Enter information and click on the "Calculate" button to get the results.

Motor Circuit


Easily Calculate Lost Hours on Future Work

Not only know what is impacting you and the cost to your projects now, easily forecast the number hours your projects can expect to lose if your crews continue to be impacted by conditions like other trades in the way, cluttered jobsite, weather, etc.

No guarantees are made as to the accuracy of the calculation or compliance with local codes.  Verify all calculations with a professional engineer. If you find an error, or have a suggestion, please send us an email.