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Discussion Starter · #1 ·
I would like to replace my fan switch with a leviton timer switch. I currently have two switches in the same box. One goes to the fan and the other goes to the bathroom light. The timer has the following wires:
black
blue
green
white

When I take of the face plate and pull the light switch and fan switch out I see the following for the fan switch:

one black wire attached to the top screw
two black wires attached to the bottom screw, with one of the black wires going to the second bathroom light switch.
A bunch of white wires which are pigtailed.

I don't see a ground wire in the box.

Any help would be appreciated
 

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Electrician
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From your timer
Green-ground to the box
White-goes to the big bunch of white wires
Blue-I am guessing this is the switched(check the instructions) will
go to the single black from your excisiting switch.
Black-This is probably your hot, goes to the two black wires that are
under the one screw.
 

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Discussion Starter · #3 ·
thanks. One last question. How do you connect the green wire from the timer to the actual box? I don't see any ground wires coming from the box.
 

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Discussion Starter · #4 ·
just to clarify

I just checked the instructions and here they are:

Black leads to circuit's line conductor
Blue leads to circuit's load conductor
green leads to the circuit's grounding conductor
for 20A unit only: connect white lead to the circuit's neutral conductor.

Darren, do your instructions still apply? Thanks for all your help.
 

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How old is your house, you may have no grounds in the box. If that is the case you can either cap and leave it in the box or cut it off.

Blue and Black are what i thought they would be(line=power in)(load=power out). What the instructions say about the neutral has me scratching my head, don't know why you wouldn't hook it up to a 15A circuit as well.

I looked on leviton website and they say a neutral is required. You could hook it up without and if it doesn't work then that is probably your problem.
 

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What the instructions say about the neutral has me scratching my head, don't know why you wouldn't hook it up to a 15A circuit as well.
My guess would be that sometimes instructions are written for multiple model numbers, and instead of having separate instruction pamphlets for each model of timer the manufacturer just uses the one multipurpose instruction pamphlet. I would be willing to bet that the 15 amp model doesn't have a neutral wire for whatever reason and the model that the OP has is probably the 20 amp model.

As darren stated your connections would be:

black - (2)blacks
blue - black
white - whites
green - cap with wirenut
 

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Discussion Starter · #7 ·
It's odd, but my house is new (2005). The one other time I replaced a receptacle with a GFCI switch there was a ground wire. I am not sure why it's not there, but thanks.
 

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Discussion Starter · #8 ·
Update - Problem

I would like to thank EBFD6 and Darren for their help. I noticed two things when I began taking things apart.

1) The light switch I am replacing is only rated up to 15amps and my switch timer is 20amps. This is a problem, correct?

2) Before I stated that there were 2 wires going to the bottom screw of the current fan switch. It turns out it's actually one wire that has had a one inch portion stripped off in the middle and that was looped around the bottom screw.

Is it correct that I have to exchange the 20amp timer for a 15amp timer? Once that's done would I still be able to cut the looped wire where it's stripped and just pigtain it with black wire from the 15amp switch timer?

Thanks
 

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Your switches are fine. Is this circuit a 15A circuit(number on the breaker). If it is your fine, your timer is rated for 20A the most it will see will be 15A but it never will.
 

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Discussion Starter · #10 ·
Yes the breaker is 15a. Should I also be OK with cutting the one wire which has had an inch stripped off in the middle and pigtailing it?
 

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Yup that is your only option, cut the wire twist it together and attach it to switch wire with a marrette. No need to put a seperate pigtail to pickup the switch wire.
 

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Discussion Starter · #12 ·
The wires in my wall are solid, while the wires from the timer switch are stranded. Do I have to use a special marrette or can I just pigtail the different types?
 

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twist your solids togethers, line up the stranded next to it and twist the marette on. Grab linesman and give it a few more turns to get it tight. Give a little tug on the stranded to make sure it is tight in the marette and your good to go.
 
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