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Bath Fan & Light Dual Switch

 
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Old 05-25-2017, 09:07 PM   #1
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Bath Fan & Light Dual Switch


Electrical is definitely not my thing, so I could really use some help. In a powder room I had a single switch that controls the light. Old wiring - 1 single 12-2 wire. Not really sure how that works since there isn't a power source in and then wire to the light tied together? at the switch. Anyway so I added a small exhaust fan today while redoing a hall bathroom above. Ran a 14-2 wire from the fan down the wall right to the switch. I didn't want the all or nothing effect so I picked up a double paddle single pole switch. Cannot figure out how to get the power the is used for the light to power the fan? Yes I know it's now lacking a junction box, I picked up new work stuff for the other bathroom and forgot and old work box for this
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Old 05-25-2017, 09:22 PM   #2
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Re: Bath Fan & Light Dual Switch


There's really no way we can tell you what to do without knowing far more than what is showing in the photos.

The first thing that scares me (and remember, I'm fearless), is adding 14-ga wire on what could potentially be a 20 amp circuit.

Once I got to that point, I decided your best bet is to call in a pro.

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Old 05-25-2017, 09:39 PM   #3
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Re: Bath Fan & Light Dual Switch


I have all my breakers listed on a spreadsheet with each item on them. This line is on a 15amp breaker
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Old 05-25-2017, 09:50 PM   #4
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Re: Bath Fan & Light Dual Switch


My guess is the power goes directly to the light with a "switch wire" running down to the switch.

Just my guess.
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Old 05-25-2017, 10:14 PM   #5
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Re: Bath Fan & Light Dual Switch


I think quite possibly you shouldn't be messing with electrical at all.
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Old 05-25-2017, 10:27 PM   #6
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Re: Bath Fan & Light Dual Switch


We have no idea what the existing wire is being used for. Is it power? Is it switched or not? Is it a switch loop? Where does it come from?

Showing us a wire is like us showing you a gallon of paint and asking if it will be enough.
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Old 05-26-2017, 07:10 AM   #7
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Re: Bath Fan & Light Dual Switch


Quote:
Originally Posted by 480sparky View Post
We have no idea what the existing wire is being used for. Is it power? Is it switched or not? Is it a switch loop? Where does it come from?

Showing us a wire is like us showing you a gallon of paint and asking if it will be enough.
If there is one wire in the box can't we assume it's a switch loop?

And he ran a new wire into the box hoping to power a fan so can we not assume he's boned and will never get it to work in it's current state?
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Old 05-26-2017, 07:34 AM   #8
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Re: Bath Fan & Light Dual Switch


Piece of cake. 2 things needed:

1. multi-meter

2. basic concepts of electricity


note: nice hackjob on ripping the switch out of the wall... and no wall box? and why 14-2 wire ? smh.

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Old 05-26-2017, 07:45 AM   #9
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Re: Bath Fan & Light Dual Switch


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If there is one wire in the box can't we assume it's a switch loop?.........

We can also assume it's a switched neutral.
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Old 05-26-2017, 08:27 AM   #10
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Re: Bath Fan & Light Dual Switch


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We can also assume it's a switched neutral.
Same end result ....he's boned.
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Old 06-01-2017, 08:25 AM   #11
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Re: Bath Fan & Light Dual Switch


You are adding another circuit. Can't do that with just switches. I suspect a junction box will need to be added topside and a line run down. Better let a sparky do it, it ain't worth it if things go wrong. What's with the wall damage?
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Old 06-01-2017, 09:22 AM   #12
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Re: Bath Fan & Light Dual Switch


I thought black was ground.....snicker.

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