I have 3 feet of 4" heat tape on a metal shelf I keep my bp on. The problem is the heat tape does not seem to be getting very warm. I set it up exactly the way I've seen it done in a lot of videos, but it feels like it is only "luke warm". I am going to purchase a temp gun to find out for sure, but I am pretty sure something is off because the bottom (inside) of the steralite container barely feels warm.

I have tried plugging the heat tape directly into the wall outlet as well as into the thermostat (on/off) I have and turned the temp up to 106 on the thermostat just trying to get it warmer. No noticable difference doing any of the above.

Any suggestions would be appreciated.
thanks