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

ECN Shout Chat
Top Posters(30 Days)
Admin 17
Recent Posts
Old decora style outlets
by Admin. 03/25/17 11:40 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
fuse rejectors
by HotLine1. 03/24/17 07:53 AM
Another Forum Update
by Admin. 03/22/17 03:04 PM
Dining room plugs
by watersparkfalls. 03/21/17 10:31 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,474 Are you busy
166,181 Re: Forum
160,635 Need opinion
Who's Online Now
1 registered members (gfretwell), 52 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#84673 - 04/20/03 11:54 AM Multi-wire branch ckt  
Steve T  Offline
Joined: Feb 2001
Posts: 306
Oak Park, IL, USA
Does anyone know if there is a requirement for identifying multi-wire branch circuits in the panel. If not it seems to me there should be. It can be very difficult for the next electrician to properly modify breaker spaces if need be without knowing which neutral goes with which hots.

2017 / 2014 NEC & Related Books and Study Guides

#84674 - 04/20/03 03:03 PM Re: Multi-wire branch ckt  
CTwireman  Offline
Joined: Feb 2002
Posts: 840
Connecticut, USA
No requirement. That's just one of the challenges of being an electrician, I guess.


#84675 - 04/21/03 09:13 AM Re: Multi-wire branch ckt  
ElectricAL  Offline
Joined: Oct 2001
Posts: 597
Minneapolis, MN USA
I understand the concern. As a regular practice, on raceway systems, I group the neutral with its related phase legs and use a wire tie or, at minimum, tape to identify the group, close to the raceway entry to the panel (assuming more than one neutral is in the raceway). If I have to verify neutral - phase leg combinations on an existing panel as part of the changes I'm doing, again, I'll mark the multiwire group with wire tie, etc., so as not to have to duplicate my effort the next time.


Al Hildenbrand

#84676 - 04/26/03 08:29 PM Re: Multi-wire branch ckt  
CRW  Offline
Joined: Feb 2001
Posts: 159
Bethlehem, PA USA
I feel it's always a good idea to put a wire number marker on both the phase conductor and the associated neutral. If the neutral is shared, put both or 3 numbers on it. This is good practice especially for conduit systems, but also for cables (NM, MC) as well. You never know when you may have to move a wire around, and why not make it as easy as possible to identify it?

Member Spotlight
Blue Collar Country
Posts: 5,316
Joined: January 2005
Show All Member Profiles 

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.002s) Memory: 0.7577 MB (Peak: 0.8874 MB) Zlib enabled. Server Time: 2017-03-26 05:27:58 UTC