ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
GFCI's pops in large numbers
by dsk - 10/21/21 02:03 AM
Need some info on Japanese outlets, 200V 15A
by andey - 10/20/21 08:05 AM
Wire sizing
by watersparkfalls - 10/19/21 07:27 AM
nec 110.3 (B)
by watersparkfalls - 10/19/21 07:09 AM
A 5-20(20a) receptacle is legal on a 15a circuit?
by libellis - 10/10/21 12:46 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 (), 16 guests, and 19 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#89678 10/12/04 05:29 PM
Joined: Feb 2004
Posts: 494
M
Member
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

2017 / 2014 NEC & Related Books and Study Guides
Joined: Jun 2004
Posts: 220
T
Member
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.

Joined: Feb 2004
Posts: 494
M
Member
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


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
Lostazhell
Lostazhell
Bakersfield, CA (Originally Orange Co.)
Posts: 1,438
Joined: February 2004
Top Posters(30 Days)
dsk 6
Popular Topics(Views)
284,723 Are you busy
217,349 Re: Forum
203,701 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5