ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Solar PV Wiring Errors
by renosteinke - 03/02/24 08:12 PM
Do You Wrap Your Receptacles?
by gfretwell - 02/20/24 10:48 PM
Cable Chase Code Requirement
by renosteinke - 02/16/24 07:00 PM
Do we need grounding?
by gfretwell - 02/16/24 10:37 AM
Cordless Tools: The Obvious Question
by gfretwell - 02/08/24 07:28 AM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
0 members (), 30 guests, and 20 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#89678 10/12/04 04:29 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

Stay up to Code with the Latest NEC:


>> 2023 NEC & Related Reference & Exam Prep
2023 NEC & Related Reference & Study Guides

Pass Your Exam the FIRST TIME with the Latest NEC & Exam Prep

>> 2020 NEC & Related Reference & 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
Powered by UBB.threads™ PHP Forum Software 7.7.5