Shared neutrals

[Ricksab]

Is there a limit to how many shared neutrals can be used in residential wiring? I had a panel on an inspection in Chicago that had eight circuits and only four neutrals. It is a new condo conversion of a 120 year old building.
Thanks in advance for the help. Yep I the new guy.

 

[augie47]

no limit, but if you are under the '08 Code, 210.4(B) might make it less practical.

 

[roger]

Is there a limit to how many shared neutrals can be used in residential wiring? I had a panel on an inspection in Chicago that had eight circuits and only four neutrals. It is a new condo conversion of a 120 year old building.
Thanks in advance for the help. Yep I the new guy.

I have never done any work in Chicago but, it sounds like something I would have done if I had.

Roger

 

[eljefetaco]

Sounds correct. No arc faults?

 

[Jim W in Tampa]

How are you dealing with arc faults ? Is no limit on shared neutrals as long as you meet everything else.

 

[infinity]

Is there a limit to how many shared neutrals can be used in residential wiring? I had a panel on an inspection in Chicago that had eight circuits and only four neutrals. It is a new condo conversion of a 120 year old building.
Thanks in advance for the help. Yep I the new guy.

I'm not sure that I understand the question. Are you asking if each neutral can be shared by two ungrounded conductors?

Welcome to the Forum.

 

[RETRAINDAILY]

what you are looking at is a MWBC

Done all the time.

 

[Jim W in Tampa]

lets be extra carefull ,we don't want another fire

 

[cowboyjwc]

lets be extra carefull ,we don't want another fire

What? They let cows do electrical work in Chicago? I hate to discriminate, but I don't give milk, cow's shouldn't do electrical.:grin:

 

[480sparky]

What? They let cows do electrical work in Chicago? I hate to discriminate, but I don't give milk, cow's shouldn't do electrical.:grin:

Mrs. O'Leary's cow was a hack?!?!!?

 

[cowboyjwc]

Mrs. O'Leary's cow was a hack?!?!!?

Made an udder mess of the job from what I know. :grin:

Man, where's Larry? I hate when I have to cover for him.

 

[Jim W in Tampa]

Made an udder mess of the job from what I know. :grin:

Man, where's Larry? I hate when I have to cover for him.

None of it ever happened if that barn had electric

 

[readydave8]

None of it ever happened if that barn had electric

might have burned anyway but would have been called an electrical fire.

 

[Awg-Dawg]

Made an udder mess of the job from what I know. :grin:

Man, where's Larry? I hate when I have to cover for him.

Funny, I always expect to see Larrys avatar when a joke is imminent.:grin:

 

[jxofaltrds]

None of it ever happened if that barn had electric

But was Article 547 in effect? No.

Anyone inspecting then?

 

[Jim W in Tampa]

I think the cow was inocent and mrs. O'leary was drunk on whitelightning and we know how well that burns.

 

[cowboyjwc]

Funny, I always expect to see Larrys avatar when a joke is imminent.:grin:

I know, he must be on vacation.:grin:

 

[LarryFine]

Mrs. O'Leary's cow was a hack?!?!!?

Yeah, and an unlicensed one, too.

 

[LarryFine]

Made an udder mess of the job from what I know. :grin:

Man, where's Larry? I hate when I have to cover for him.

Funny, I always expect to see Larrys avatar when a joke is imminent.:grin:

I know, he must be on vacation.:grin:

Then, I flip the page and see all this stuff. :roll: Wow, that's some reputation I have here.


The truth is that I was working today, and had an estimate to look at afterward.

 

[russ]

This is a typical installation in Chicago and surrounding area. Every thing is in conduit and it makes sense to share neutrals, to cut down on load bearing conductors, and conduit fill.

Id say if your going to Home inspect in this area you might want to study the Chicago electrical code. Other wise your going to get a lot of things wrong.