C Wire Rules


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Old 01-04-14, 08:32 PM
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C Wire Rules

I thought I would be more specific to see if this helps. Can I connect multiple wires to the C (common) terminal at the furnace. I was also wrong and it looks like I have a Common wire to the AC right now outside. Looks like I have room on the screw though to connect the thermostat to common as well. Let me know if anyone out there knows what the rule is here.
 
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Old 01-04-14, 09:13 PM
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Yes.... you can put more than one wire on a screw terminal. If you run a C wire to the thermostat you will end up with at least two wires on the C terminal. That is perfectly acceptable. You probably already have two wires on the Y terminal.
 
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Old 01-05-14, 04:49 PM
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It works great thank you! Got it up and running today in no time.
 
 

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