**Motor Capacitor Sizing Chart**. 0.079 in × 0.049 in: 1 hp = 746 watts.

1 hp = 746 watts. Hence 1 hp motor required 24.66 µf capacitance to start the motor smoothly. Select a capacitor with a capacitance value (given in mfd, uf or microfarad) that is equal to the original capacitor.