Dryer needs neutral to seperate 110/220V.

So it has to be 4-wire cable, like the metal one you mentioned below.

所有跟帖： 

• old dryer only has 3-wire cable, newer one uses 4-wire cable -比花花還花- ♂ (62 bytes) () 12/07/2012 postreply 12:50:33

• The 4th wire is the metal cover:) -易木- ♂ (61 bytes) () 12/07/2012 postreply 12:55:12