COMMUNITY FORUM

scross4

05:32AM | 05/14/07
Member Since: 05/13/07
1 lifetime posts
Bvelectrical

how to install GFCI protection on multiwire branch circuits

Tags: Electrical & Lighting
I have installed a 20 amp double pole breaker using 12/3 wire in alternating series in my kitchen. I am trying to install GFCI protection to both sets of receptacles, but I am having a problem where any outlet that is off series of the first GFCI trips the GFCI only when something is plugged in (tester works fine) (example: GFCI set to black wire, all red wire outlets trip the GFCI when used) I have tried installing a second GFCI in the alternate series with no luck. I know it has something to do with the shared neutral, but I am not sure how to correct the problem so that I have GFCI protection on all outlets. Any help would be greatly appreciated. Also let me know if I need to clarify any points

househelper

07:55AM | 05/14/07
Member Since: 03/31/05
265 lifetime posts
At the first GFCI receptacle you will have 12/3 in, 12/2 out to the next GFCI (other circuit) and 12/2 out to the first protected receptacle on circuit one. Connect the black from the 12/3 to the line hot side of the GFCI and a short piece (6 in) of white wire to the line neutral side of the GFCI. Connect the white wire of the 12/2 going out to the next GFCI (other circuit) to the white from the 12/3 AND to the short pigtail. Connect the black of the 12/2 to the red from the 12/3.

For the 12/2 going to the protected recptacles on circuit 1, connect the black to the load hot and the white to the load neutral.

Billhart

06:14PM | 05/14/07
Member Since: 04/25/05
1915 lifetime posts
One is to "split" the circuit at the first box and go to 12-2 as was mentioned.

The 2nd way is to use a 2 pole GFCI breaker.

The last way is to install a GFCI receptacle at each location and not use it to feed downstream.

joed

07:05AM | 05/16/07
Member Since: 09/17/02
524 lifetime posts
You can not share the neutral on the LOAD side of the GFCI. You must either use a double pole GFCI breaker or separate the circuit at the first receptacle LINE side into two circuits each using there own neutral.
Click to reply button
8c8bddcc507cf99d5bf49c6b9d3ea14e
Bob Vila Radio: Venting a Fireplace Insert
Fa5bfd873c34cc2b77224107fe85aa22
Slash Your Electric Bill with 11 Savvy Hacks
Ae28b63c2e866ed2b6512856094ca3b8
Which Is the Right Type of Water Filter for You?
Open uri20120628 22426 1nsr6g7 0
Selecting Appliances

YOU MIGHT ALSO LIKE...

10 Things You Should Never Do When the Power Goes Out
Yml slideshow icon 10 Things You Should Never Do When the Power Goes Out
Tag icon article small Bob Vila Radio: How to Hush a Noisy Radiator
Tag icon article small Save Money and Live Better with Multizone HVAC
Tag icon article small This Fall, Tune Up the Engine That Drives Your ...
Tag icon article small How To: Join Copper Pipe
Inspiration banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button

Anonymous

Post new button or Login button
Register

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon
 
Browse this site

Bob Vila.com

Copyright © 2017 Bobvila. All rights reserved