ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Violation?
by HotLine1 - 01/19/23 09:10 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 17 guests, and 14 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#2446 07/10/01 06:17 PM
Joined: Jul 2001
Posts: 6
C
Junior Member
Can someone please tell me the correct way to hook 2 GFI's and 1 regular 20amp duplex receptacle using one circuit in a commercial building. The regular duplex receptacle cannot be on the load side of the GFI's. The 2 GFI's are for the men and ladies restroom and the regular duplex receptacle is for an office. I always thought you needed a seperate neutral for each GFI you put in line on one circuit.

#2447 07/10/01 06:23 PM
A
Anonymous
Unregistered
>Can someone please tell me the correct way to hook 2 GFIs and 1 regular 20amp duplex receptacle using one circuit in a commercial building. The regular duplex receptacle cannot be on the load side of the GFIs.
So just pigtail them off your branch (parallel).

>I always thought you needed a separate neutral for each GFI you put in line on one circuit.
No such requirement technically or in Code.

#2448 07/10/01 06:29 PM
Joined: Jul 2001
Posts: 6
C
Junior Member
So you are saying to just go to the line side of the GFI's when making my connections,then I do not need another neutral? Will the GFI's ever trip if they sense an imbalanced load in whatever is plugged into the regular receptacle?

#2449 07/10/01 06:45 PM
Joined: Mar 2001
Posts: 2,056
R
Member
Is this a multi-wire(2 or 3 hots and one neutral)circuit?

#2450 07/10/01 06:55 PM
Joined: Jul 2001
Posts: 6
C
Junior Member
This is a single circuit application, 1 hot 1 neutral and a ground for 2 20amp GFI's and 1 20amp duplex receptacle.

#2451 07/10/01 08:45 PM
A
Anonymous
Unregistered
>So you are saying to just go to the line side of the GFIs when making my connections, then I do not need another neutral?
Correct.

>Will the GFIs ever trip if they sense an imbalanced load in whatever is plugged into the regular receptacle?[/B]
Not really. GFCIs are pretty clueless about the line side.
That's why they don't work if wired in backward (line and load interchanged).

#2452 07/10/01 08:53 PM
Joined: Jul 2001
Posts: 6
C
Junior Member
Thank You for your help. So the only time you would need a seperate neutral for each GFI is if they are all feeding from seperate circuits?

#2453 07/10/01 09:53 PM
A
Anonymous
Unregistered
>the only time you would need a separate neutral for each GFI is if they are all feeding from separate circuits?
That is correct. But that is because separate circuits need their own (line-side) neutrals by Code. This is not a technical requirement for a GFCI to operate.

However, the load side current must not be diverted anywhere. In other words, if you cross your load-side neutral with any other neutral, the GFCI will trip. And if any load on the GFCI is not hooked to the load-side neutral of that same GFCI, then when that load is activated, the GFCI will trip.



[This message has been edited by Dspark (edited 07-10-2001).]

#2454 07/11/01 07:56 AM
Joined: May 2001
Posts: 176
W
Member
There was a time when GFCI's first came into the market, and were required by the NEC, that separate neutrals were required to prevent nuisance tripping.


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
timmp
timmp
Leo, IN, USA
Posts: 28
Joined: June 2004
Top Posters(30 Days)
BigB 9
triple 3
Popular Topics(Views)
302,454 Are you busy
231,795 Re: Forum
216,401 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5