Though it is an usual idea, it may be incorrect to state that the C-wire powers the thermostat. Usually, the cables that offer the power supply ( normally described as the 'hot' cords) are marked Rc (for cooling) and Rh (for heating). They…

Though it is an usual idea, it may be incorrect to state that the C-wire powers the thermostat. Usually, the cables that offer the power supply ( normally described as the 'hot' cords) are marked Rc (for cooling) and Rh (for heating). They…