Help with fan timer wiring??

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Old 11-16-17, 06:41 AM
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Help with fan timer wiring??

Looking to put a timer for my washroom fan . I open the cover plate and there s 4 wires .
White going to the metal box .
red is shared with both fan and light
a seperate white going to light switch
and black going to fan

the timer switch i got has 3 wires and a green ground screw no wire supplied for the green screw .
my question is how do I wire this . I get I match black and red ? But where does the white wire go and how about the green ground screw??
I attached a ghetto drawing if that helps
 

Last edited by PJmax; 11-16-17 at 07:53 PM. Reason: removed pic links
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Old 11-16-17, 10:06 AM
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Old 11-16-17, 07:54 PM
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The DIY board does not accept hot linking to all hosting sites.
Try posting your pictures directly to the board..... How-to-insert-pictures

Definitely need a diagram or better yet.... actual wiring picture.
 
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Old 11-17-17, 08:57 AM
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I attached a pic ............

Name:  20171116_083550.jpg
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Last edited by PJmax; 11-17-17 at 09:50 PM. Reason: reoriented picture
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Old 11-17-17, 09:54 PM
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In your diagram I see three wires between the fan and the switches. If that is NM-b (romex) cable.... then there should be a bare ground in it too.

The red wire is the live feed to the two switches.
White is a switched hot feed back to the light.
Black is a switched hot feed back to the fan.

There is no neutral available in that box for an electronic timer.
 
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Old 11-18-17, 10:40 AM
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There's a second white wire coming in and it's going to the metal box ..... So can i still put a timer on this switch ?
 
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Old 11-18-17, 10:42 AM
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Where is the second white wire coming from ?
You show it appearing from nowhere.

Do you have conduit there instead of cable ?
If you have a conduit system.... white should NOT be used as a hot wire.
 
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Old 12-05-17, 09:53 PM
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The second white wire is coming from the same spot as the others . Home was built in 1997
 
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Old 12-05-17, 09:58 PM
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So that means if you look into the box where the wires enter..... you see a large opening....a conduit. Not NM-b (romex) or BX.
 
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Old 12-06-17, 01:42 PM
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I 'll open it again and take pics. From what I remember it looks like a romex
 
 

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