ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Conduit over Vinyl Siding
by Jim M - 06/16/21 08:30 PM
Updated Forum Software
by Admin - 06/15/21 10:23 AM
Broken Outlet & Dangling Light
by LoneWolf - 06/14/21 08:21 PM
How's all our Non-US folks doing?
by C-H - 06/14/21 05:42 PM
Where is Everyone?
by Bill Addiss - 06/14/21 12:37 PM
New in the Gallery:
2020 - 2021 Winter Project
2020 - 2021 Winter Project
by Bill Addiss, April 29
Garden 2021
Garden 2021
by Bill Addiss, April 26
Who's Online Now
0 members (), 5 guests, and 16 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
#118796 10/27/04 11:29 PM
Joined: Dec 2000
Posts: 4,287
Member
How do you terminate underfloor/underground conduits when they come up into an open bottomed enclosure.

Obviously, I think this is not the best way.
Is it a violation?


[Linked Image]


Most of the wholesalers I know don't even stock endbells, and it's a very rare thing to find them installed anywhere.

#118797 10/28/04 09:02 AM
Joined: Oct 2004
Posts: 265
D
Member
I've always cut them about that height, but removed any burs and wouldnt leave the sharp edges like they did. I'll flip a coin if I put a coupling on the end. Some inspector might tag you for not protecting the wires I guess, but to me it would be a stretch, its PVC for goodness sake. Worst case, if you ever get tagged, put a PVC Box connector and then a plastic bushing. Have the PVC bushing protect the wires from the PVC pipe! [Linked Image]

But yes, the broken edges in that picture bug me.

#118798 10/28/04 09:20 AM
Joined: Aug 2003
Posts: 1,374
R
Moderator
How about a plastic bushing on those raceways that contain conductors 4 AWG and larger?

300.4


Ryan Jackson,
Salt Lake City
#118799 10/28/04 03:48 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
dmattox
Quote
Some inspector might tag you for not protecting the wires I guess, but to me it would be a stretch,

It is not a stretch, a bushing is required for PVC regardless of the conductor size.


ARTICLE 352 Rigid Nonmetallic Conduit: Type RNC
Quote

352.46 Bushings.
Where a conduit enters a box, fitting, or other enclosure, a bushing or adapter shall be provided to protect the wire from abrasion unless the box, fitting, or enclosure design provides equivalent protection.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#118800 10/28/04 05:41 PM
Joined: May 2004
Posts: 81
V
Member
Please use a saw

110-12

#118801 10/28/04 06:28 PM
Joined: Aug 2001
Posts: 7,520
P
Member
How about fitting a plastic or metal plate horizontally within the bottom of the enclosure and terminating the conduits with normal fittings through it?

It would mean a lot more work, but it would certainly look neater.

#118802 10/28/04 08:15 PM
Joined: Jan 2002
Posts: 324
A
Member
I always use a male adapter and plastic bushing when stubbing into gear or xfmrs.

#118803 10/28/04 08:36 PM
Joined: Aug 2001
Posts: 599
N
Member
I always use end bells.
It's also common to see people run branch conduits into hand holes by wrapping the whole bundle (riser) with duct tape. [Linked Image]
Fat chance you will get any kind of bushing on it after its back filled.
Quote
its PVC for goodness sake
I hear that comment all to often. [Linked Image]

#118804 10/28/04 09:30 PM
Joined: Apr 2001
Posts: 518
J
Member
I have to say that the code requirement seem superflous; isn't a pvc pipe 'equivalent' in protection to a pvc bushing? Indeed, isn't there mor often sign that the wire insulation abraded the pipe, rather than the reverse?
If this is the worst violation found, I'd have to say "good job!"

#118805 10/28/04 09:46 PM
Joined: Dec 2000
Posts: 4,287
Member
Sorry, John, I disagree
352.46 ......unless the box, fitting, or enclosure design provides equivalent protection........
I don't see anywhere that it says "conduit"

Sharp edges can cut the insulation (ever cut yourself on PVC? It can be gory).

Page 1 of 2 1 2

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
Vlado
Vlado
Croatia
Posts: 28
Joined: February 2011
Top Posters(30 Days)
Admin 14
Trumpy 10
Popular Topics(Views)
280,396 Are you busy
213,468 Re: Forum
200,382 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5