20+20 Ceiling Fan Winding Data | 16mm 40 Slot All Ceiling Fan Winding Data 20+20 Ceiling Fan Winding Data | 16mm 40 Slot All Ceiling Fan Winding Data Core Length/Stamping Size – 16 mm Slot – 20 + 20 Total Coil Running & Starting – 40 Starting Turns – 330 Running Turns – 340 S.w.g – 35 Capacitor – 2.25 – 2.50 Mfd