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04-23-2012, 11:29 AM
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#1
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Member
Join Date: Feb 2011
Location: San Francisco Bay Area
Posts: 46
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GFCI's and neutrals.
Can one neutral 120v single phase be shared with two separate GFCI's on two separate 20 amp circuits?
I have installed this application and when trying to use the GFCI's they imediately trip. I am thinking that each GFCI needs it's own neutral and cannot be shared.
Thanks
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04-23-2012, 11:35 AM
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#2
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NRA Member
Join Date: Feb 2011
Location: Wonderful Northern Minnesota
Posts: 4,378
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It depends.
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When "deleted" called the Seals, they killed Bin Laden. When the Seals called "deleted", he denied them.
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04-23-2012, 12:17 PM
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#3
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Member
Join Date: Feb 2011
Location: San Francisco Bay Area
Posts: 46
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Quote:
Originally Posted by backstay
It depends.
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10,000 comedians out of work and I have to listen to you.
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04-23-2012, 12:23 PM
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#4
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Senior Member
Join Date: Oct 2011
Location: central iowa
Posts: 1,299
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it can be shared on the line side but not the load.
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04-23-2012, 12:25 PM
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#5
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animal lover /rat bastard
Join Date: Apr 2009
Location: central east coast us
Posts: 7,061
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read the following, it explains how they work, which should tell you why your gfis are tripping (maybe)
http://ecmweb.com/mag/electric_gfcis_work/
__________________
As President Roosevelt said: "We have nothing to fear but fear itself. And Chuck Norris. And 滿口胡言. And Grabthar's hammer. And Gort. and 江南 Style. and rotting in the street and Zombies . . . and Wayne Griffen "
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04-23-2012, 12:34 PM
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#6
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976-EVIL
Join Date: Feb 2009
Location: State of Euphoria
Posts: 13,415
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Ooops
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04-23-2012, 12:39 PM
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#7
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Chief Electron Relocator
Join Date: Sep 2007
Location: Cornpatch USA
Posts: 31,584
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This will not work:
You need to either separate the neutral after the first GFCI:
Or install a 2-pole GFCI breaker:
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In winter, why do we try to keep the house as warm as it was in summer when we complained about the heat?
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04-23-2012, 12:54 PM
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#8
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Moderator
Join Date: May 2009
Location: Chapel Hill, NC
Posts: 12,250
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A gfci receptacle is easy just don't connect the shared neutral to the load side of the gfci. If it is a mwbc and you are using GE panels then you can share the neutral at the panel otherwise you must use dp gfci. Ge will allow 2 sp gfci breakers- no other company can you do that.
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04-23-2012, 12:57 PM
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#9
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1,000,000th Poster
Join Date: May 2010
Location: Portland
Posts: 9,852
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I sure wish someone would make a drawing explaining this.  
-John
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04-23-2012, 01:04 PM
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#10
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NRA Member
Join Date: Feb 2011
Location: Wonderful Northern Minnesota
Posts: 4,378
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Quote:
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Originally Posted by Big John
I sure wish someone would make a drawing explaining this.
-John |
All these posts and my first one said it all.
__________________
When "deleted" called the Seals, they killed Bin Laden. When the Seals called "deleted", he denied them.
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04-24-2012, 03:30 PM
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#11
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Member
Join Date: Feb 2011
Location: San Francisco Bay Area
Posts: 46
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Thanks!
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