Hey guys, today I was talking with the guy I am working with about thermostats. In school, I learned that the thermostat gets its 24 volts from the r terminal. While we were discussing this, he told me that the thermostat is actually powered by the c terminal. I was taught that on a call for cooling or heat, r sends power to w for heat and to r g and y for cooling. I guess he has kind of confused me. Can you guys fill me in in regards to what ACTUALLY is going on with the Tstat now that I have heard something completely different. Thanks.