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How to wire 3 switches and a GFCI in a bathroom?

Home Wiring
How to wire 3 switches and a GFCI in a bathroom? How to tie all 4 devices together.

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  • Brad Brown Jun 04, 2010

    I dont know why you would want to do it that way. The switches are controlling lights or outlets? Are you running a fan for ventilation?



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They all tie together..
The line coming from the breaker to the bathroom needs to be connected to the GFI first. You can add other outlets to it after the GFI is installed. Just connect the others in a string as you would do normally anywhere else like in the old days before the GFI came along.. Usually the instructions are on the box the GFI came in..

Posted on Jun 04, 2010

  • ejarchow Jun 04, 2010

    Could you send me a drawing showing the jumpers etc?

  • frank thomas wilson
    frank thomas wilson Jun 04, 2010

    Schematic is at the website



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I have a gfci/switch and need a 4 wire instructions. As none of the diagrams match what i have.

What device are you replacing... a switch or a outlet?

1) If you are replacing a switch with 3 or 4 wires?
That is either a 3-way switch, 4-way switch, or a DPDT switch and cannot be replaced with GFCI

2) If you are replacing outlet with 4 wires, then it can be replaced with GFCI combo.

3) If you are replacing ordinary single-pole switch, then you can replace with GFCI combo IF the box has a neutral wire

4) You can install GFCI protection on any circuit by installing GFCI earlier in the circuit.


Oct 21, 2014 | Pass & Seymour 1595SWTTRWCC4 COMBINATION...

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Wiring back up a bathroom light bar

Employ a qualified electrician to wire it up correctly.

Mar 27, 2017 | Kichler Lighting 3127 - Jervis Bath Bars...

1 Answer

How can i tell if I'm getting power to a switch?

Sorry for delay answering, this question appeared today on my my screen.
Copy following links:

Check if GFCI has power across Load terminals.
Replace GFCI.

Sep 03, 2012 | Siemens 20Amp 1-pole arc-fault circuit...

1 Answer

I want to install two GFCI receptacles in an outside box. One is the Cooper with the on/off switch and the other a Eagle GFCI (no on/off) can/should this be done? and if so, how? We have wired it several...

Question is a bit unclear and wires are not known.
Are both GFCI devices inside same box?
Not necessary to install 2 GFCI devices inside same box since second outlet/switch can be protected using one GFCI.

1) Typical GFCI outlet device has 4 terminal screws (plus green ground screw for bare copper ground wire)
2) Two of the screws are labeled LINE. These screws are where the black Hot wire and white Neutral wire are connected. Black goes to brass screw and white to silver screw. And now the device has power to outlets, and both outlet are GFCI protected.
3) Two of the screws are labeled LOAD. These screws are where you attach additional outlets/switches that you want protected by GFCI. All outlets connected to LOAD screws would be GFCI protected. So attach black and white wires and run them to an ordinary outlet/switch and it will be GFCI protected. The key is to connect wires to the LOAD screws.
4) If you are using the outlet/switch combo GFCI device, then the same wiring shown above applies. The difference is the wires sticking out of back of device are for the switch. For example if switch controls a light, the wires going to the light connect to the two wires on back of device.

Jun 16, 2011 | Cooper Wiring Devices GFCI Outlet with 1...

1 Answer

Bathroom switch controls light & fan. Trying to change out switch into a gfi switch/receptile. Box contains 2 wires ( total 2 white and 2 black, plus ground). what do i do

First you have to identify cables.
You have 2 cables that enter box. Each cable has black and white wires.
One cable probably comes from breaker box, and one cable probably goes to Load (which means your fan-light)

Separate wires for testing. Turn power ON.
Test each wire to bare ground wire. Tester lights up on Hot wire. This wire will connect to brass 'Line' screw on back of new GFCI device.
Hot is identified. Test Hot to all other wires except bare ground. Tester lights up on Neutral wire. Neutral connects to silver screw that sits across from Line screw on new GFCI device.
Other two wires inside box go to Load.
These wires connect to the two wires that stick out on back of new GFCI device.

Ground wires are connected together and connect to green screw on new device.

Apr 21, 2011 | Cooper Wiring Devices ACE AC-DC...

1 Answer

Show wiring diagram for 274w combo

1) A wiring diagram can be mistaken because wire colors vary.
That's why electricians don't guess, they test.

2) Look at device to be replaced and note what color screw each wire goes to before disconnecting wires.
If old device is single pole switch, then there are 2 brass screws, and one of these screws is connected to Hot wire, and the other screw is connected to Load wire (light, fan, motor, pump)

3) Separate wires inside box for testing.
Do not untwist any wires.
Tape tester leads to wood sticks to keep hands away from power.
Turn power ON.
Test each wire to bare ground wire.
Tester lights up on Hot. Hot wire connects to dark-colored screw on combo device.

4) Hot is identified.
Test Hot to all other wires, except bare ground wire.
Tester lights up on Neutral wire. In a single-pole switch box Neutral wires are usually twisted together and covered with wire nut. Neutral wire connects to silver screw on new device.

5) Load wire that goes to light,fan, motor, pump connects to brass screw on new combo device.

6) If you do not have a Neutral wire in your switch box, then outlet will not work.
You can connect bare ground wire to silver screw and have outlet work, but this is not code, and definitely not recommended for a child's room or any room near water pipes or faucets or metal pipes of any kind. You need to add a Neutral wire and/or install GFCI protected device for any bathroom area.

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Feb 05, 2011 | Cooper Industries Cooper Wiring 274W...

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I have a black/white/ground wire coming from my power supply into my bathroom. I want to install a 274w combination device so as I can have one plug outlet and a switch for the shower fan.I need to see a...

1) In this situation we need to test the wires.
Electricians don't guess, they test, and a diagram would be guessing which wire color does what.

2) FYI: non-GFCI receptacle located in bathroom is not code, and device will have to be replaced when property is sold. The reason for GFCI is the likelihood of you holding defective electrical gizmo from China in one hand while putting other hand in running water. Or electrical gizmo falling into bathtub occupied by wife with large life insurance policy.
If you have kids using that bathroom, I want you to avoid using non-GFCI device.

3) Your new device has color-coded screws: Dark, brass, and silver.
These colors tell electrician how to wire the device.

4) Let's test to see which wire connects to which screw:
Separate wires.
Use ordinary 2-wire tester from hardware store.
Tape tester leads to wood sticks so hands are away from power.
Turn power ON.
Test each wire to bare ground wire.
Tester lights up on Hot wire. Hot wire connects to dark-colored screw on device.
Hot wire is identified.
Test Hot wire to all other wires in box, except bare ground wire.
Tester lights up on Neutral wire. Neutral wire connects to silver screw, and will complete circuit to receptacle.
If box does not have a Neutral wire, the circuit to receptacle can be completed using ground wire on silver screw, but I am not recommending that.
Last wire goes to Load (light, fan, motor). Load wire connects to brass screw, and will complete circuit to Load.

Add a comment for more free help.
Also take advantage of fixyas phone service.
For a price, fixya expert speaks with you over phone while you work on electrical device.

Leviton and Lutron both make GFCI switch-outlet combo.
Buy at Home Center or on-line
Leviton 7299

Jan 02, 2011 | Cooper Industries Cooper Wiring 274W...

1 Answer

If you have 3 white and 3 black as well as a ground,how do you hook it up ?

If I understand correctly, your are replacing a GFCI receptacle with another GFCI receptacle

And your existing GFCI has 3 black and 3 white wires

And there is not a switch involved in the changeover.

I downloaded the manual from Lutron

Every wiring diagram in manual shows:
Black wires connect to brass-colored screws
White wires connect to silver-colored screws

The brass and silver colored screws are typical of all residential receptacles. The color-code tells the electrician which terminal gets the black and white wires.

Are you having a problem putting 3 wires onto 2 screws?
It is a common problem.
You can buy a short piece of white and black wire at hardware store
Lets work on the black wires as example:
Strip back insulation on short piece of black wire
Hold together two of your black wires and start twisting them together
Now add the short wire to the two black wires you started twisting
Now twist together the two blacks and short black
So three wires are twisted together and you have a short lead that can connect to screw on GFCI
Put a wire nut over the twisted wire
Now you're ready to connect other end of short black wire to brass-colored screw
This reduces the number of wires that connect to screws

Oct 20, 2010 | Lutron NTR-20-GFCI VAREO 20A GFCI...

1 Answer

Our switch for the ceiling fan burned out today. Instead of getting the same type of switch (rotary knob with push on/off) I bought a Pass & Seymour combination toggle switch (dual on/off toggle...

The wire to the ceiling fan are meant to send voltage to the fixture only and are not usually wired to control both the light and the fan independently. In order to do that, you may have to pull another set of wires to the switch box and then connect them to the light circuit in the box where the fan is. In regards to the other wiring that you mentioned, it makes no sense that the wires go to the stove fan and the bathroom fan unless those wires are source wires that carry the incoming voltage.

Mar 17, 2017 | Pass & Seymour #690IGCC6 15A Ivory DPLX...

1 Answer

Triple rocker switch to control 3 function bathroom fan/light

I suggest you cut 3 pigtails out of your black wire (about 5-6" each and strip them so you can put a nut to tie them all together on the main wire, then do the same for your grounds using green 5-6" strips of wire and then connect all 3 switches with the pigtails to their proper locations. This WILL fix your problem.

Mar 08, 2010 | Leviton 1755 Triple Rocker Switch Decora

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