ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
600 KW 120/208 3 Phase Y protection
by Yooperup. 07/24/17 12:20 PM
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
239,354 Are you busy
174,812 Re: Forum
167,196 Need opinion
Who's Online Now
0 registered members (), 86 guests, and 4 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#89678 - 10/12/04 05:29 PM Insulated Neutral from SE  
mustangelectric  Offline
Member
Joined: Feb 2004
Posts: 494
Bentonville, AR
Hi,
Is it not allowable to use an unisulated neutral in the portion of the sec's that are overhead or undeground?

I have a 200A 120/240 VAC Main Panel mounted on a pole..the feeder from the 200A main to the house is a 4/0 3 COND AL URD...2 insulated and one bare conductor (neut). w/ground rod at house..As far as I know this is a legal installation isn't it?

an insulated neutral is only required past the first OCPD EXCEPT where feed from a separate location like another building or pole?

i am getting old...so my memory is not working as good as it used to..

Thanks for any replies

Mustang


Electricity has no respect for ignorance!

2017 / 2014 NEC & Related Books and Study Guides

#89679 - 10/12/04 06:12 PM Re: Insulated Neutral from SE  
trekkie76  Offline
Member
Joined: Jun 2004
Posts: 220
baileyville, maine, usa
as long as the underground AL conductor meets the requirements of 230-30 EX.(D), I'd say yes, but I wouldn't put AL in the ground bare. What kind of URD is this? all the stuff I use has an insulated nuetral.


#89680 - 10/12/04 07:04 PM Re: Insulated Neutral from SE  
mustangelectric  Offline
Member
Joined: Feb 2004
Posts: 494
Bentonville, AR
Hi,
thanks for the reply. The cable looks as if it is a TRIPLEX that has been placed in the ground. I called it URD but I bet it is a TRI-PLEX XLPE.

I am planning to replace the feeder with a insulated neutral using URD (insulated neutral marked with yellow stripe).

I have seen the results of placing AL in direct contact with the earth...you end up with a white powder that loses continuity...

i inherited the job from the HO's cousin..

it looks like a 1st year apprentice took on more than he could chew..

as always, thanks for the replies..

-regards

Mustang


Electricity has no respect for ignorance!


Member Spotlight
watersparkfalls
watersparkfalls
Washington...Not DC
Posts: 216
Joined: March 2005
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: 0.013s Queries: 14 (0.002s) Memory: 0.7522 MB (Peak: 0.8743 MB) Zlib enabled. Server Time: 2017-07-26 18:40:58 UTC