Welcome to the kitchen, folks! Let’s start with a basic menu of motor types and see what we want to make today! The most commonly used air-moving motors are Shaded-Pole and Permanent-Split Capacitor types. Shaded Pole, or SP, motors are used where low cost and low starting torque are required. They are used to drive blowers, bathroom vents, range hoods, attic vents, fan coils, etc. An SP motor can be recognized by the individual stator coil windings and the single copper band formed around one side of each stator pole. You can see this by looking inside the motor or taking off an end bell. SP motors always rotate toward the shading (copper) band. Permanent-Split, or PSC, motors are used where higher starting torques are needed than what an SP motor will provide. They are also used where you need a higher efficiency. In general, PSC motors are twice as efficient as an SP motor. They are used for higher efficient blowers, condensers, or where you may need a higher horsepower. A PSC motor can be recognized by the capacitor that will be attached to it, or by the tight, double, windings in the motor. PSC motors are also generally reversible and can be wired for either rotation. Next week we will get back to the kitchen and drum up a recipe for Capacitor Start, Split Phase and Three Phase motors. Bon appetite!