Electronic – How to wire up single phase induction motor

induction motorwiring

I bought a single phase induction motor with two capacitors, but I do not know how to read the wiring diagram on this motor.

wiring diagram

Best Answer

The diagram is in two parts, the left side is the connection for clockwise rotation, the right for counterclockwise.

In both the capacitor is connected to the same terminals, V2 and Z1, presumably the left two as seen in the photo, which is upside down relative to the diagram. The second cap isn't detailed in the diagram, presumably that's a start capacitor that is internally connected to the centrifugal start switch (the light blue colored wires that disappear into the body).

The two brass links are then to be connected horizontal or vertical to set the rotation - as photographed it's clockwise. The effect of swapping the links it to reverse the current through the auxiliary winding relative to the main winding (it doesn't matter which one is actually being reconnected).