hmm. Weird. It is connected to a Herpstat with the grounded chord...but the extention chord I have hooked to the flexwatt (which has a ground) is not grounded. I wasn't sure how to do that. My flexwatt is taped on the bottom section, but it goes down one side...across he bottom, and up the other. I did put electrical tape over the connections as well. The sides are only on by a small piece of tape at each end (since I have to move the removable bottom to finish wiring the fans). Maybe thats the prob??
If any of you have seen the post, my incubator is that readiwipp fridge. The inside is exposed metal.
The main thing is that I wanted to make sure it wasn't a fire hazard because of it.