ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
sparky 8
Recent Posts
2017 NEC Changes
by gfretwell. 12/18/17 11:03 AM
Nec circuit protection
by Jkhayward. 12/18/17 09:56 AM
Dimmable LED 2x4 lay in fixtures
by HotLine1. 12/17/17 10:04 PM
Holiday Wishes to all!!
by sparky. 12/17/17 03:45 PM
Casino Wiring methods
by HotLine1. 12/09/17 10:44 AM
New in the Gallery:
Gallery Test
Popular Topics(Views)
243,100 Are you busy
179,551 Re: Forum
170,451 Need opinion
Who's Online Now
0 registered members (), 22 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#94867 - 08/16/05 06:04 PM Panel identification  
boggerbutt2454  Offline
Joined: Feb 2005
Posts: 44
Concord NC USA
I had inspector tell me he wants a label on the front of the panel for 120/208 that say's
A phase black
B phase red
C phase blue
for 277/480
A phase brown
B phase orange
C phase yellow
He said this is a new code but the reference he gave didn't state this.

Is this something new? I always thought the color code was sort of a rule of thumb that all electricians knew the color code although I have seen some that use black, red, blue for everything.

[This message has been edited by boggerbutt2454 (edited 08-16-2005).]

2017 / 2014 NEC & Related Books and Study Guides

#94868 - 08/16/05 06:33 PM Re: Panel identification  
Larry Fine  Offline
Joined: Feb 2005
Posts: 693
Richmond, VA
Except for white, green, and gray, coloring is purely arbitrary. If anyone knows differently, please advise.

[This message has been edited by Larry Fine (edited 08-16-2005).]

Larry Fine
Fine Electric Co.

#94869 - 08/16/05 06:44 PM Re: Panel identification  
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
The colors you choose are up to you, the NEC would allow purple, pink and brown for 480 volt.

However in some instances the NEC does require that the colors you choose to be listed at the panel.

In the 2002 NEC it applied only to multiwire branch circuits.

210.4 Multiwire Branch Circuits.(D) Identification of Ungrounded Conductors. Where more than one nominal voltage system exists in a building, each ungrounded conductor of a multiwire branch circuit, where accessible, shall be identified by phase and system. This means of identification shall be permitted to be by separate color coding, marking tape, tagging, or other approved means and shall be permanently posted at each branch-circuit panelboard.

Now in the 2005 it applies to all circuits in some buildings.

Look at 2005 - 210.5(C)

Bob Badger
Construction & Maintenance Electrician

#94870 - 08/16/05 08:54 PM Re: Panel identification  
resqcapt19  Offline
Joined: Nov 2000
Posts: 2,148
But in the 2005 code there is no requirement that each phase have a different color...only each system.


#94871 - 08/16/05 10:46 PM Re: Panel identification  
gfretwell  Offline

Joined: Jul 2004
Posts: 9,143
You do still have this one;
110.15 High-Leg Marking.
On a 4-wire, delta-connected system where the midpoint of one phase winding is grounded to supply lighting and similar loads, the conductor or busbar having the higher phase voltage to ground shall be durably and permanently marked by an outer finish that is orange in color or by other effective means. Such identification shall be placed at each point on the system where a connection is made if the grounded conductor is also present.

Greg Fretwell

#94872 - 08/16/05 10:53 PM Re: Panel identification  
Larry Fine  Offline
Joined: Feb 2005
Posts: 693
Richmond, VA
Absolutely right, GFret. My bad.

Larry Fine
Fine Electric Co.

#94873 - 08/17/05 12:43 AM Re: Panel identification  
Rhino  Offline
Joined: Jun 2004
Posts: 24
San Diego,California,USA
A lot of the fine points of our trade and codes hilighted here!
Really kind of a treat!
Thanks to all that contribute

#94874 - 08/17/05 05:23 PM Re: Panel identification  
boggerbutt2454  Offline
Joined: Feb 2005
Posts: 44
Concord NC USA
Thanks iwire, I must have read over 210.4 a couple of times and missed it each time. Like they say if it had been a snake it would have bit me.

Member Spotlight
Posts: 165
Joined: March 2007
Show All Member Profiles 

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman


Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.014s Queries: 14 (0.003s) Memory: 0.7937 MB (Peak: 0.9513 MB) Zlib enabled. Server Time: 2017-12-18 16:49:58 UTC