In a duplex 6-pole wave winding, there are typically two parallel paths. The term "duplex" indicates that there are two sets of coils, while "6-pole" refers to the number of magnetic poles in the machine. Each set of coils is wound in a wave pattern, which means they are distributed across multiple slots. The winding arrangement creates multiple parallel paths for the flow of electric current. Therefore, in a duplex 6-pole wave winding, there will be two parallel paths.