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Old 03-08-2007, 12:43 PM   #1
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New exhaust fan install in a old bathroom?


I am trying to install a exhaust fan in our bathroom. The room never had a fan before. I need to know how to wire the fan to an existing wall switch.
Thanks for the help.
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Old 03-08-2007, 12:53 PM   #2
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New exhaust fan install in a old bathroom?


Confusion time. If there never was a fan, how could there be a switch?

Just kidding...Anyway, I assume you want to attach it to the light switch so the fan comes one with the light. Is that correct? Pick your poison. Either run the wire down to the switch and pigtail them together or run the wire to the fixture and make the connection there.
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Last edited by beer_geek; 03-08-2007 at 01:01 PM. Reason: bad joke
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Old 03-08-2007, 02:25 PM   #3
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New exhaust fan install in a old bathroom?


Dear Mr. Beer Geek,

I would like to change the single light switch to a double switch so as to turn them on independly.
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Old 03-08-2007, 04:11 PM   #4
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New exhaust fan install in a old bathroom?


It depends on how the light is wired. How are the wires connected to the switch and the light? How old is the house? I ask these questions in order to determine how to phrase an answer. I'm sure the pros would need more information as well.
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Old 03-08-2007, 04:31 PM   #5
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New exhaust fan install in a old bathroom?


Where is the existing light? Are you trying to replace a ceiling light with a fan light combo?

Is there an attic? Above the bath room?
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Old 03-09-2007, 06:27 AM   #6
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New exhaust fan install in a old bathroom?


The light switch is on the out side of the shower wall and controls the light in the shower. The light switch is a single pole ,single throw switch. I thought I could install the fan and drop a wire from the attic to the wall switch and change the switch to double pole, double throw switch. I then could operate the light and the fan independent of each other.
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Old 03-09-2007, 07:19 AM   #7
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New exhaust fan install in a old bathroom?


That's fine but it doesn't tell us how it's wired. Is the switch at the beginning or end of the run? Secondly, you want 2 single pole switches if you want them to act independently.
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Old 03-09-2007, 08:54 AM   #8
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New exhaust fan install in a old bathroom?


I now understand what you are asking . I don't know the answer to that question and I don't know how to tell.
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Old 03-09-2007, 11:09 AM   #9
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New exhaust fan install in a old bathroom?


I'll ask one more question but I'm really leaning towards you having a pro come in and take care of this.

When you turn off the power and pull out the switch, what do you see?
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Old 03-12-2007, 06:28 AM   #10
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New exhaust fan install in a old bathroom?


I pulled the switch out and there were two wires coming down in to the box. All the grounds were tied together, all the whites were tied together and there was a black on the top and bottom of the switch. The switch had only two screws on it.
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Old 03-12-2007, 09:01 AM   #11
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New exhaust fan install in a old bathroom?


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Originally Posted by tom6024 View Post
I pulled the switch out and there were two wires coming down in to the box. All the grounds were tied together, all the whites were tied together and there was a black on the top and bottom of the switch. The switch had only two screws on it.
That's great information. The first thing I'd do, is go out and get the Black and Decker Advanced Home Wiring Book. It has simple diagrams for you to follow.

Page 28 shows Ganged Single-pole Switches Controlling Separate Light Fixtures.

It is exactly what you are looking to do. I could write paragraphs describing the connections but the picture really makes it easier.

Follow this link: http://books.google.com/books?id=TAK...Za__s#PPA28,M1

It is the page in the book that you want. Hope this helps.
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Old 03-12-2007, 10:32 AM   #12
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New exhaust fan install in a old bathroom?


Mr. Beer Geek

Thank you so much for your help, but most important for your time to help. Thanks again
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