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watter74 01-08-2013 10:18 PM

hooking up new thermostat
 
I am installing a new thermostat and there is no power to the c wire. The c wire seems to act as a ground. I get 28 volts between the c and r wires. Is this normal? I was looking at the transformer on my furnace and there are 2 leads coming out. A fused blue lead that connects to the c terminal and a yellow lead that connects to the r terminal. There is also a wire connected to the c terminal that is screwed into the box like a ground. Is this normal? I was under the impression that the c wire for the thermostat is supposed to be a 24 volt positive wire. Any help is greatly appreciated!!

carmon 01-08-2013 10:54 PM

R is 24 volt positive.... c is the common....... hope that helps....

watter74 01-08-2013 11:00 PM

Quote:

Originally Posted by carmon (Post 1089457)
R is 24 volt positive.... c is the common....... hope that helps....

If I am getting 28 volts from r to c is that ok?

carmon 01-08-2013 11:03 PM

it sure is.....


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