Dura,
Just for kicks and giggles, put your Wiggy & your meter across the line side of your open disconnect, at the same time. Or clamp on with your DMM while you watch with and without your Wiggy. If you were to get a buck for every volt, you probably wouldn't have enough for your morning cup of coffee. Let us know what you find.
Joe

Then we'll talk about my old saying, "All the world's a voltage divider!"