Hello I have 3 baseboard heaters on one T stat. They have been working great for about 3 years now. I came home the other day and my place was about 85. I got a new high volt T stat. I took the T stat off the wall there was 2 small gage wires. The breakers are 2- 30 amp with a bar hooking them together. I was thinking with the breakers that the wire should be a bigger gage. First T stat I got had 4 wires on it. So I returned it and got one that had an area to use 2 wires. My heat is still not turning off. Any info?