Drum Switch Single Phase Motor Reverse Forward Switch Connection. The live supply wire from the mains is connected to terminal 1 the neutral supply wire from the mains is connected to terminal 3 when the switch is in the off positions all the terminals of the dewhurst switch are isolated from each other. Always reverse the wires that lead to the starter winding.
To reverse rotation on a single phase capacitor start motor you will need to reverse the polarity of the starter winding. Always reverse the wires that lead to the starter winding. Terminals 4 and 8 are not used for a normal single phase motor.
In order to achieve this you can swap the connections on either end of the winding.
This will cause the magnetic field to change directions and the motor will follow. To reverse rotation on a single phase capacitor start motor you will. When it is forward or reverse positions the running winding is connected to live and neutral in an unchanging way terminal 5 az is connected to terminal 1 the live supply wire. Terminals 4 and 8 are not used for a normal single phase motor.
