Let's emphasize your need to work towards safety and to implement what you have learned in your jobs and your lives; it will also help you see how you can get more involved and make an even better and safer electrical industry.
Starting with Part III of Article 220, which is titled Feeder and Service Load Calculation, we will finally start with the actual math work.
Single-phase and three-phase AC squirrel cage induction motors need some type of circuit to initiate a start or stop function. Usually single-phase motors and smaller horsepower three-phase motors can be started with full voltage across the line. However, larger horsepower three-phase motors require reduced voltage starting techniques.