[Zeke]

Not uncommon on Hobart's. Go on over to a Hobart welding forum.

@John70T, the drive wheel is not supplying power but it has potential in that the wire gets its power at the torch contact and is isolated from the welder by the plastic reel. You can get shocked if you touch the wire or rollers and the chassis at the same time with the trigger pulled.

Yes, there is residual voltage on the wire after breaking contact with the work. You can eliminate this by touching the wire to the work after releasing the trigger.