We have had a 600W dimmer switch in the dining room for 10 or 12 years. It runs 6-60W bulbs. We noticed yesterday that it was more than a little warm, it was fairly hot. I know they emit heat, but just don't have any real experience as to how much. So, I replaced it with a 1000W so I would have a little room to use larger bulbs if I so desired and still be within the load range. I have a metal face plate and none of the 'ears' have been removed from the switch. At the maximum setting, it is running right at 120 degrees between the switch and the face plate which I have not installed in the switch box. It is still outside the wall and I don't want to complete the installation unless this is normal.
Any suggestions?