I've bought one of those heat wrap things to try to keep the pipes in the well head from freezing. The previous tenant of the house we bought said that it had happened in the past.
Currently there's just a piece of plywood on top of the well head with some hard foam insulation underneath. The original concrete top turned out to be sitting a few feet away, buried under some leaves.
The previous tenant had rigged up a light bulb with an extension cord over to the house to keep the well head from freezing.
The heat wrap thing I bought is 110 Volts, it uses a normal U.S. 3 prong adapter. The submersible pump in the well head is 220 with two hot (black and red) and a ground wire. I don't want to use a drop cord like the previous tenant used.
I'm missing a neutral in the well head so I can't see a good way to hook up the heater. This is in central NC, so it doesn't get terribly cold. About the coldest it ever gets here is around zero Fahrenheit. With some insulation and a concrete well head, how likely would it be that the pipes would ever freeze?