Hi folks, this is a photo of a friend's thermostat switch that controls electric radiant heating in a bedroom ceiling. Can someone explain this wiring to me? It doesn't make sense. The switch appears to be single pole. The switch has just two terminals. The circuit is reportedly 240v. Why are there two black wires going to one side of the switch and two black wires going to the other? I would expect to see one hot wire going to the switch and one wire going to the heater, and then the other hot wire (red?) returning from the heater to the panel. The condo was built in the mid 1970's. Sorry, but I haven't had a chance to verify if there is 240v between the two switch terminals and also if the red wire in the box is the return from the heater. I apologize if I haven't given enough info for an answer, but I can get the info in a day or two when I go over to the house. Just wondering what is going on in this switch box. Thanks.
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