ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
fuse rejectors
by NORCAL. 03/29/17 01:44 AM
Old decora style outlets
by NORCAL. 03/29/17 01:41 AM
NFPA stuff
by gfretwell. 03/28/17 08:08 PM
Anyone hiring inspectors?
by HotLine1. 03/27/17 08:03 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,751 Are you busy
166,656 Re: Forum
160,801 Need opinion
Who's Online Now
0 registered members (), 78 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
Page 1 of 4 1 2 3 4
#56121 - 09/15/05 09:52 PM Neutral Current Carrrying?  
bot540  Offline
Member
Joined: Sep 2004
Posts: 174
Vernon Hills, IL
I know this has probally been asked a thousand times but does the neutral in a 2 wire single phase circuit(ie: a small apliance branch circuit) count as a current carrying conductor?


Jesus may have been a capenter,but God was an electrician.Genesis1:3

Work Gear for Electricians and the Trades

#56122 - 09/15/05 09:59 PM Re: Neutral Current Carrrying?  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
You don't have a neutral in a two wire circuit. [Linked Image]

You have a ungrounded conductor, a grounded conductor and maybe a grounding conductor.

Both the ungrounded conductor and grounded conductor are current carrying conductors.

Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#56123 - 09/15/05 10:02 PM Re: Neutral Current Carrrying?  
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Absolutely, in a 2 wire circuit it is impossible to have a neutral conductor. Click Here

Roger


#56124 - 09/15/05 10:05 PM Re: Neutral Current Carrrying?  
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
I was a little slow on that one Bob. [Linked Image]

Roger


#56125 - 09/15/05 10:13 PM Re: Neutral Current Carrrying?  
bot540  Offline
Member
Joined: Sep 2004
Posts: 174
Vernon Hills, IL
Thanks guys I just read the post in the nec forum and understand.


Jesus may have been a capenter,but God was an electrician.Genesis1:3

#56126 - 09/15/05 10:13 PM Re: Neutral Current Carrrying?  
Attic Rat  Offline
Member
Joined: Dec 2003
Posts: 524
Bergen Co.,N.J. USA
...Bob,I may be wrong here,but,isn't the grounded conductor considered current-carrying ONLY when used in circuits where there are non-linear loads harmonics,such as HID lighting,servo controls,ballasts,or in a 3 phase wye utilizing only 2 phases and a neutral...etc??otherwise,if the circuit is balanced,the current on the neutral is 0,you wouldn't count it as current -carrying for derating purposes,ampacity..??
Russ


.."if it ain't fixed,don't break it...call a Licensed Electrician"

#56127 - 09/15/05 10:19 PM Re: Neutral Current Carrrying?  
winnie  Offline
Member
Joined: Sep 2003
Posts: 649
boston, ma
Attic Rat, the OP was asking about a two wire circuit, not a multiwire circuit where current could balance in the neutral.

-Jon


#56128 - 09/15/05 10:21 PM Re: Neutral Current Carrrying?  
Attic Rat  Offline
Member
Joined: Dec 2003
Posts: 524
Bergen Co.,N.J. USA
Ooops,..my bad... [Linked Image] [Linked Image]


.."if it ain't fixed,don't break it...call a Licensed Electrician"

#56129 - 09/15/05 10:37 PM Re: Neutral Current Carrrying?  
bot540  Offline
Member
Joined: Sep 2004
Posts: 174
Vernon Hills, IL
Does a grounded conductor have to be perfectly balanced in order not to be counted as a current carrying conductor? Can someone give a feild example?


Jesus may have been a capenter,but God was an electrician.Genesis1:3

#56130 - 09/15/05 10:42 PM Re: Neutral Current Carrrying?  
Attic Rat  Offline
Member
Joined: Dec 2003
Posts: 524
Bergen Co.,N.J. USA
... Take a normal 3 phase wye circuit,..all sharing the neutral,and the loads close to being equal...(barring the use of HID fixtures,processors,variable speed drives etc)and you should have a balanced circuit..
Russ


.."if it ain't fixed,don't break it...call a Licensed Electrician"

Page 1 of 4 1 2 3 4

Member Spotlight
richard
richard
L.I. New York
Posts: 94
Joined: August 2003
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.016s Queries: 15 (0.003s) Memory: 0.8176 MB (Peak: 0.9946 MB) Zlib enabled. Server Time: 2017-03-29 19:06:11 UTC