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Old 06-13-2017, 12:55 PM  
PromethusBound
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Default Attic Exhaust Fan wiring

With the summer heat we have noticed our 2nd floor isn't cooling off. I took a look in our attic and noticed the exhaust fan isnt running. Opened the junction box and noticed one of its white wire was disconnected. The Black wire is connected. Testing the power the only live wire is red. I do see two sets of white wires.


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Old 06-13-2017, 01:30 PM  
nealtw
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Do you have a main floor switch and if you do can you fiure out which set of wires go to or come from the switch?


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Old 06-13-2017, 02:39 PM  
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The fan will not operate w/o the white conductor connected.

However, you have the option of determining, if, there is a switch leg, or, install a temperature controlled switch, at the open "J" box, instead of a mechanical switch.
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Old 06-13-2017, 03:47 PM  
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With the summer heat we have noticed our 2nd floor isn't cooling off. I took a look in our attic and noticed the exhaust fan isnt running. Opened the junction box and noticed one of its white wire was disconnected. The Black wire is connected. Testing the power the only live wire is red. I do see two sets of white wires.
Have you ever had this fan running before.
If yes and nothing was changed you might look in the wire nuts on the white wires to see if a wire just broke leaving some evidence where it was.

There are just to many wires to say this is easy, this box could also be a junction box for another circuit or something.
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Old 06-13-2017, 07:34 PM  
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There are just to many wires to say this is easy, this box could also be a junction box for another circuit or something.
Where is the neutral conductor, from the BX, which is sticking up in the air, connected?
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Old 06-13-2017, 07:40 PM  
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Where is the neutral conductor, from the BX, which is sticking up in the air, connected?
Why is there an extra black wire.
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Old 06-13-2017, 08:58 PM  
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I've identified where the white conductor, which is not connected is, so; "Where is the neutral conductor, from the BX, which is sticking up in the air, connected?"
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Old 06-13-2017, 09:04 PM  
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Are you assuming the BX is going to the fan?
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Old 06-13-2017, 10:11 PM  
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Only if that would be a clue why the fan isn't operating.
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Old 06-13-2017, 10:17 PM  
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Only if that would be a clue why the fan isn't operating.
Just not enough info for me to make a suggestion.

We don't know if the OP knows the whole story. I will wait for him to come back with some answers.


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