ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
Question on power to 4 Nema 6-50 & 5 Nema 5-15.
by TrickedoutTech. 10/22/17 11:36 PM
VFD MotorFeeders
by Yoopersup. 10/22/17 07:52 PM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,458 Are you busy
177,444 Re: Forum
169,025 Need opinion
Who's Online Now
0 registered members (), 13 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
Page 1 of 3 1 2 3
#210475 - 06/26/13 01:05 PM Length of free conductors at outlets  
Steve T  Offline
Member
Joined: Feb 2001
Posts: 306
Oak Park, IL, USA
Does anyone happen to know when the code started requiring a certain length of wire at j-boxes? I'm dealing with existing cloth bx and changing fixtures/devices and trying to apply a practical approach.


2017 / 2014 NEC & Related Books and Study Guides

#210476 - 06/26/13 03:08 PM Re: Length of free conductors at outlets [Re: Steve T]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
Oldest NEC I have in the office is 1975.
300.14 is in there with 6"

Someone else here has older NECs in their archives & they may have some input.



John

#210477 - 06/26/13 03:11 PM Re: Length of free conductors at outlets [Re: Steve T]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,124
Estero,Fl,usa
In old work, from a practical sense, it is what it is.
Talk to your AHJ to see what remediation they like there.
Typically you can splice on the additional conductor necessary to make the box usable but that is not defined in the code.


Greg Fretwell

#210478 - 06/26/13 03:37 PM Re: Length of free conductors at outlets [Re: Steve T]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
Ditto to what Greg said above as to splicing on extension pieces.

An issue that pops up with replacement fixtures is the temp rating of the 'old' conductors. There is an available sleeve that goes over single conductors that is acceptable to some AHJs.



John

#210479 - 06/26/13 05:06 PM Re: Length of free conductors at outlets [Re: Steve T]  
Steve T  Offline
Member
Joined: Feb 2001
Posts: 306
Oak Park, IL, USA
In this case I am the AHJ. And yes the temp rating is a highly correlated concern. Any links to those sleeves?


#210480 - 06/26/13 05:30 PM Re: Length of free conductors at outlets [Re: Steve T]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
I do not have a link; hopefully someone does. The sleeves come with a few different fixtures that I have seen.

One that sticks to memory is Ruud Lighting, with the wallpack HID fixtures. You may find it thru McMaster Carr.



John

#210481 - 06/26/13 08:38 PM Re: Length of free conductors at outlets [Re: Steve T]  
WESTUPLACE  Offline
Member
Joined: Mar 2004
Posts: 251
Kingwood, TX USA
http://www.3m.com/market/industrial/ceramics/materials/braided_sleevings.html

I use this in the industrial dryers I work on. Most well stocked electronic stores carry it as well as some HVAC suppy stores


#210482 - 06/26/13 10:55 PM Re: Length of free conductors at outlets [Re: Steve T]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
West:
Thanks for that link. Based on the temp ratings...it looks $$$$


John

#210483 - 06/27/13 02:25 AM Re: Length of free conductors at outlets [Re: Steve T]  
BigB  Offline
Member
Joined: Mar 2004
Posts: 719
Tucson, AZ USA
Not to change directions here but are you allowing grounding type receptacles? I have often wondered about this, as the BX provides a grounding path, although questionable and not actually listed for grounding. What do you do?


#210484 - 06/28/13 10:38 AM Re: Length of free conductors at outlets [Re: Steve T]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
BigB:
Best answer I can offer is:
"320.108 Equipment Grounding Conductor. Type AC cable
shall provide an adequate path for fault current as required
by 250.4(A)(5) or (B)(4) to act as an equipment grounding
conductor."
From the '11 NEC



John

Page 1 of 3 1 2 3

Member Spotlight
mxslick
mxslick
Atomic City, ID USA
Posts: 803
Joined: October 2004
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: 0.023s Queries: 16 (0.004s) Memory: 0.8214 MB (Peak: 1.0020 MB) Zlib enabled. Server Time: 2017-10-23 11:49:45 UTC