ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 5
Recent Posts
What do you do?
by gfretwell. 09/18/17 08:17 PM
Supporting conduit bodies
by ghost307. 09/18/17 12:12 PM
Thermal Imaging Camera upgrade
by Potseal. 09/18/17 11:57 AM
Linear Power Supply Quits Under Load
by JoeTestingEngr. 09/15/17 11:37 PM
Recreational Trailer Power Supply
by David1. 09/14/17 01:55 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,807 Are you busy
176,563 Re: Forum
168,497 Need opinion
Who's Online Now
0 registered members (), 39 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#186147 - 04/22/09 01:18 AM High Leg  
NORCAL  Offline
Member
Joined: Sep 2002
Posts: 872
Section 408.3 (E) (2005) requires the high leg of a 3 4-wire delta system to the B phase, would there be a requirement to also locate same phase to the B phase in a safety switch, or motor starter other then keeping things the same/consistent everywhere?


2017 / 2014 NEC & Related Books and Study Guides

#186148 - 04/22/09 01:30 AM Re: High Leg [Re: NORCAL]  
frenchelectrican  Offline
Member
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
Rollie .,

Typically with most Delta system the B phase or wild leg useally are landed on centre lugs in most place unless marked otherwise and if you have 4 wire system then yes you also have to mark the conductor with correct colour useally orange { I know few spots will ask for purple colour }

If you run into old Delta system it will useally marked in red so watch out on that one.

Merci,Marc


Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)


#186151 - 04/22/09 03:49 AM Re: High Leg [Re: frenchelectrican]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,113
Estero,Fl,usa
Marking the high leg orange has been in the code for over 20 years.


Greg Fretwell

#186153 - 04/22/09 10:07 AM Re: High Leg [Re: gfretwell]  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,261
Fullerton, CA USA
The Code reference given applies to panelboards and switchboards only.....

Do the same rules apply to motor starters and safety switches?

(not the orange tape, or in the case of San Francisco violet tape)



#186154 - 04/22/09 11:09 AM Re: High Leg [Re: electure]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 826
Michigan
Says Orange or marked & only required when a Neutral is present.


#186157 - 04/22/09 01:45 PM Re: High Leg [Re: Yoopersup]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,113
Estero,Fl,usa
If there is no neutral present it is not particularly important which is the B phase since they are all ungrounded conductors and should be treated with the same respect. The only regard in line to line loads is phase rotation but you still need unique marking to identify the system they are connected to.
We do have in inconsistency between the code and industry practice. The code says the B phase of a center delta shall be orange but orange is also commonly used on 480 wye "BOY".


Greg Fretwell

#186174 - 04/23/09 09:36 PM Re: High Leg [Re: gfretwell]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,862
Brick, NJ USA
Utility (PSE&G) requires high leg within their equipment to be on 'C' phase.....and marked orange. They do not allow 'boy' on 277/480 volt in their equipment. Orange only on a high leg system.

Any other POCOs specs like this??


John

#186176 - 04/24/09 12:48 AM Re: High Leg [Re: HotLine1]  
wire twister  Offline
Member
Joined: Nov 2006
Posts: 23
Washington GA USA
Around here, Georgia all the pocos want the high leg on the c phase in their meters and marked with orange tape. As far as I know there is no problem using BOY on 277/480 systems.


#186181 - 04/24/09 09:19 PM Re: High Leg [Re: wire twister]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 826
Michigan
Nec deals with Utility Co. High leg on C phase :
408.3 (E) Exception.
Yoopers
Most Utility Companys require the High leg on C phase in there metering Equipment.



Member Spotlight
RH1
RH1
California
Posts: 22
Joined: August 2009
Show All Member Profiles 
Featured:

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: 0.022s Queries: 15 (0.004s) Memory: 0.8020 MB (Peak: 0.9728 MB) Zlib enabled. Server Time: 2017-09-19 11:37:05 UTC