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Old 05-10-2012, 03:05 PM   #31
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The only difference between what I did and what you're showing in your diagram is where the actual endpoints are of a few wires. You're combining the whites/blacks of the fan and light lines BEFORE taking them to the GFCI. What I did was I kept them independent, and ran them right to the back of the GFCI since the GFCI had two connections available for "load". I figured, oh, two connections, fan = 1, light = 1, call it a day.

I'll give that a shot. Hopefully it's a home run!


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Old 05-10-2012, 05:09 PM   #32
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Any current flowing through the GFI must match what is coming back on the white.
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 05-10-2012, 08:22 PM   #33
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Originally Posted by k_buz View Post
Those people are wrong. If the everything is wired correctly and the GFI is tripping, then there is something wrong...either with the wiring or something connected to the wiring.

Here is a diagram on how this should be wired.

I followed your diagram.

The good news is, it works.
The bad news is, the fan is on 100% of the time (which I'm sure I can fix) however I lost interest in trying to fix that when I realized there is literally no way I'll be able to fit this conglomeration of wires into this box. I redid it three times, each time precisely cutting the wires to the exact length I need (thankfully I left quite a bit of extra in the lines I ran).

I'm going to pick up a junction box tomorrow. I think it'll just simplify everything.
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Old 05-10-2012, 08:25 PM   #34
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If the fan won't turn off, you either wired it wrong, or you have a bad switch.
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Old 05-10-2012, 08:34 PM   #35
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Maybe you just need a bigger box at the switches. I had to pull out one of these

and put in one of these

to fit all the wires that came into a 2-gang box that I was adding another cable to. The max wirefill is printed on the inside of each of those boxes, and I was overfilling the smaller one.

Last edited by M3 Pete; 05-10-2012 at 08:37 PM.
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Old 05-11-2012, 10:59 PM   #36
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I think what's burning me, the more I think about it, is the fact I have more on this circuit than I originally thought. I have two bathroom lights, and I'm realizing now that the hallway light is also on this circuit. All of that taken into consideration and you have quite a mess when it comes to combining everything.

I'm thinking on adding a few small junction boxes in the mix to remove the bulk of wiring at the switches. That way multiple devices doesn't = multiple lines @ the switch itself.

For example, I have light A and light B. Well, light A's wiring goes RIGHT past B, so why continue A and B to the switch and add to the mix? I'll add a small junction box next to B, route them both in there, and have 1 wire coming out. That way, 1 wire for both lights.

Secondly, I think I'll get a small junction box and do the same thing with the fan and hallway light. That way both items are broken down into 1 line.

If I do that, then I should have one line for both lights in the bathroom, one line for the fan and hallway light, and one line for GFCI that they get daisy chained to.

The only concern I have is how the hallway light will work. The hallway light has its own independent switch out in the hall. After all, if the fan and hallway light are wired together, yet they both come in contact with another switch, will the switch in the hall still control the hallway light REGARDLESS of the on/off position of the fan/bathroom light? My gut tells me yes, mostly because I think I had everything wired up like this and it was like that, but that was wired outside of the box when I realized I had too much to shove into the box.

So, in closing...

Fan - junction box 1
Hall light - junction box 1
one line out of junction box 1 to switch A

(at the junction box, whites are together, blacks together, and grounds together, simply daisy chaining off of one another. That way instead of 1 line for fan and 1 line for hall light it consolidates the wiring down a bit)

Light A - junction box 2
Light B - junction box 2
one line out of junction box 2 to switch B

Then at the switches, I follow the same pattern as what was in that screenshot. All grounds together, all whites together, and the blacks connected accordingly as per the picture.

Would that work? I tried to draw up a screenshot, but my puppy chewed through my Ubuntu laptop cord, so I'm stuck on my Mac and it drives me bat **** crazy to do any sort of Gimp work. Go figure.

On a serious note, thanks a lot guys for the help. This forum is great.

Last edited by roasted; 05-11-2012 at 11:02 PM.
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Old 05-13-2012, 09:58 PM   #37
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Well, I tackled the electric problem and got it done today. I had a slight curve ball that I didn't expect. The hall light seems to be on the same circuit as the bathroom, since it shuts off when I throw the bathroom breaker. I noticed a line coming from the hallway light to the bathroom, which I can only imagine was to power the one light switch to work with the on/off function of the fan. Turns out that line wasn't dependent upon the bathroom for actual power. That light must get power from somewhere else, but still be on the same breaker. I know this because if I disconnect everything, yet turn the breaker on, the hallway light is active and I can turn it on/off accordingly.

So, that removes that light out of the picture, which simplifies things a bit. Once I got that out of the picture, I revisited the picture above and wired up my two outlets accordingly. The fan works perfect. I'm sure the lights will too, but tonight the brittle light fixture cracked when I was working with it, so that's on hold until I can pick up a new one tomorrow at the hardware store.

So, can I ask a dumb question? Is it typical that things be wired like the above image? For example, I assume it's common to cap whites together and run the blacks accordingly to the screws on the light switch? This is my major (at least I call it major) electrical job in our new house. Besides this I've only re-wired new outlets, but the wiring is already there and hard to goof up. Only difference there is there are no multiple wires to cap off. Just white wire to silver screw, black wire to gold screw, ground to green, bingo bango done...

Thanks for all of the help so far!


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