Wiring Diagram for 20A GFI Outlet with Switch
#1
10-15-15, 08:52 AM
Wiring Diagram for 20A GFI Outlet with Switch
Could someone send me a link to a wiring diagram for a 20A GFI outlet with switch? I will be installing a covered outlet under my soffit for a heat cable. I would like to have a switch, in my garage, with a small light so I know when the switch is on.
Items:
Southwire 12-3 NM-B W/G
GE 20-Amp Backyard Outlet with GFI Receptacle
Leviton 1223-PLC 20-Amp Switch
My goal is to run the cable as follows:
- THHN 12-3 NM-B W/G cable from panel/breaker in EMT to box with a switch;
- same cable from box in EMT to other side of garage;
- punch through garage ceiling into guest bedroom closet WALL;
- up through closet wall into attic
- drill through side of house where exterior box will mount; and,
- free run cable in attic, through hole in side of house, into box & outlet.
Items:
Southwire 12-3 NM-B W/G
GE 20-Amp Backyard Outlet with GFI Receptacle
Leviton 1223-PLC 20-Amp Switch
My goal is to run the cable as follows:
- THHN 12-3 NM-B W/G cable from panel/breaker in EMT to box with a switch;
- same cable from box in EMT to other side of garage;
- punch through garage ceiling into guest bedroom closet WALL;
- up through closet wall into attic
- drill through side of house where exterior box will mount; and,
- free run cable in attic, through hole in side of house, into box & outlet.
#2
10-15-15, 10:09 AM
THHN 12-3 NM-B W/G cable from panel/breaker in EMT to box with a switch
GFCIs must remain accessible. If the height will be more than 6'7" then the GFCI needs to be at the switch.
The switch you linked to is a 3-way you need a standard SPST switch with a pilot light.
My suggestion to keep things low price and work with easy to find parts would be a standard 20 amp non lighted switch and a GFCI receptacle in a double gang box at the garage. A night light plugged into the GFCI receptacle. That would feed a non GFCI receptacle at the eaves.
Last edited by ray2047; 10-15-15 at 12:35 PM.
#3
10-15-15, 12:37 PM
The boxes I've been looking at have knockouts in the back of the box. The house has vinyl siding. I was going to cut the vinyl siding just enough to slip the box in and screw it to the side of the house. Would this allow the THHN to be run directly to the box? If not, I can use a junction box in the attic. I was just hoping for a straight pull.
Hubbell Bell 5320-0 Single Gang 3-1/2-Inch Outlets Weatherproof Box
Taymac MM510G Weatherproof Single Outlet Cover
Universal in Use Cover TRWR-S355E
Hubbell Bell 5320-0 Single Gang 3-1/2-Inch Outlets Weatherproof Box
Taymac MM510G Weatherproof Single Outlet Cover
Universal in Use Cover TRWR-S355E
#4
10-15-15, 01:33 PM
If the siding is vinyl you could use something like this: http://www.amazon.com/Arlington-Indu...0_SR108%2C160_
#5
10-15-15, 03:14 PM
Beautiful! Nice find, Ray! =)
Now I just need to determine if using this box, since it has a rear entry, would allow me to run THHN direct to the box without having to switch to a different cable type.
Now I just need to determine if using this box, since it has a rear entry, would allow me to run THHN direct to the box without having to switch to a different cable type.
#7
10-15-15, 04:50 PM
Now I just need to determine if using this box, since it has a rear entry, would allow me to run THHN direct to the box without having to switch to a different cable type
#8
10-15-15, 07:56 PM
Thanks for clarifying. So, if I went with 12-3 NM-B W/G cable, I COULD run free within the attic, THROUGH the wall of the house, and into the back of the box for the receptacle?
This is the cable I would like to use... from the panel to the switch...
Southwire 12-3 NM-B W/G (By-the-Foot)-63947699 - The Home Depot
This is the cable I would like to use... from the panel to the switch...
Southwire 12-3 NM-B W/G (By-the-Foot)-63947699 - The Home Depot
#9
10-15-15, 08:33 PM
Sorry I haven't yet discussed all the items in the parts list of your first post. I was concentrating on one at a time to keep it simple.
You do not need 12-3. You only need 12-2 (or maybe 14-2). Take a quick look at my diagram and you will see it only uses 12-2. Southwire 12-2 NM-B W/G (By-the-Foot)-28828299 - The Home Depot
What is the amp rating of the heat cable? If it is less than 12 amps you only need a 15 amp breaker and 14-2. Regardless of whether you run 20 amps or 15 amps you only need a 15 amp GFCI not a 20 amp. The receptacle under the eve will also only need to be 15 amp. I doubt you need a 20 amp switch.
You do not need 12-3. You only need 12-2 (or maybe 14-2). Take a quick look at my diagram and you will see it only uses 12-2. Southwire 12-2 NM-B W/G (By-the-Foot)-28828299 - The Home Depot
What is the amp rating of the heat cable? If it is less than 12 amps you only need a 15 amp breaker and 14-2. Regardless of whether you run 20 amps or 15 amps you only need a 15 amp GFCI not a 20 amp. The receptacle under the eve will also only need to be 15 amp. I doubt you need a 20 amp switch.
Last edited by ray2047; 10-15-15 at 09:05 PM.
#10
10-16-15, 07:32 PM
My reason for running 12-3 cable was to allow the cable to be reused at some point in the future. Not a good idea? Would the extra conductors cause a problem for anyone?
