ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
It's been an interesting career
by Marienauripod - 05/23/22 12:21 AM
Run Cap subsitution question. Two vs. one
by LarryC - 05/20/22 09:01 PM
Material shortages???
by NORCAL - 05/02/22 04:12 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 43 guests, and 11 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#94335 07/27/05 10:34 PM
Joined: Mar 2005
Posts: 240
Member
i have never done it but can one splice in an lb it is a conduit body and think it has sufficient cube space although if it is cast suppose grounding would be an issue since there isnt a threaded hole.
anyway just wondering?

Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

#94336 07/27/05 11:26 PM
Joined: Jul 2002
Posts: 717
M
Member
There are some lb's that are listed to have splices in them provided that the cross sectional area of the splices does not exceed, ah what? I don't have my codebook handy - 40 per cent of the total volume of the fitting?

#94337 07/28/05 01:08 AM
Joined: Jun 2003
Posts: 1,143
D
Member
Courtesy of the '96 Code:
Quote
370-16 (c) Conduit Bodies.
<snip>
Conduit bodies shall not contain splices, taps, or devices unless they are durably and legibly marked by the manufacturer with their cubic inch capacity. The maximum number of conductors shall be calculated using the same procedure for similar conductors in other than standard boxes.

#94338 07/28/05 05:00 AM
Joined: May 2004
Posts: 116
S
Member
watersparkfalls -

From the 2002 NEC Handbook:

314.5 Short-Radius Conduit Bodies.

Conduit bodies such as capped elbows and service-entrance elbows that enclose conductors 6 AWG or smaller, and are only intended to enable the installation of the raceway and the contained conductors, shall not contain splices, taps, or devices and shall be of sufficient size to provide free space for all conductors enclosed in the conduit body.

Short radius conduit bodies are not permitted to contain splices.

And there is also:

314.16(C)

(C) Conduit Bodies.
(1) General. Conduit bodies enclosing 6 AWG conductors or smaller, other than short-radius conduit bodies as described in 314.5, shall have a cross-sectional area not less than twice the cross-sectional area of the largest conduit or tubing to which it is attached. The maximum number of conductors permitted shall be the maximum number permitted by Table 1 of Chapter 9 for the conduit or tubing to which it is attached.
(2) With Splices, Taps, or Devices. Only those conduit bodies that are durably and legibly marked by the manufacturer with their volume shall be permitted to contain splices, taps, or devices. The maximum number of conductors shall be computed in accordance with 314.16(B). Conduit bodies shall be supported in a rigid and secure manner.
As illustrated in Exhibit 314.4, conduit bodies other than the short-radius type are permitted to contain splices or taps, provided the conduit bodies are marked with their cubic inch capacity. Such conduit bodies are required to have a cross-sectional area not less than twice that of the conduit to which they are attached and are not permitted to contain more conductors than the attached raceway. The volume requirements for splicing or tapping are provided in 314.16(C).
Conduit bodies must be rigidly supported. See 314.23(D)(2) and the exception to 314.23(E), and Exception No. 1 of 314.23(F), which permit the raceway to support the conduit body, provided the conduit body is not larger than the attached raceway.
See 314.28 for requirements that apply to conduit bodies used as pull and junction boxes.

Exhibit 314.4 An example of splices in a raceway-supported conduit body.


Hope this helps.

Steve


Thanks
Steve
#94339 07/28/05 11:11 AM
Joined: Mar 2005
Posts: 240
Member
thanks guys that helps ALOT!
h2o

#94340 07/29/05 11:19 PM
Joined: Jun 2003
Posts: 1,143
D
Member
All hail the Handbook!
(I love that thing)

Good call, Steve.



[This message has been edited by DougW (edited 07-29-2005).]


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 811
Joined: April 2004
Top Posters(30 Days)
LarryC 3
NORCAL 2
Popular Topics(Views)
291,336 Are you busy
223,828 Re: Forum
209,228 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5