 |
05-21-2008, 07:21 PM
|
#1
|
|
Member
Join Date: May 2008
Location: CA
Posts: 32
|
medium voltage burial
Does an underground conduit carrying medium voltage cable have to be encased in concrete?
The specs say to bury with sand, but the general says we must use concrete. I don't see anything about this in the NEC...
|
|
|
Join the #1 Electrician Forum Today - It's Totally Free!
ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!
Join ElectricianTalk.com - Click Here
|
Warning: The topics covered on this site include activities in which there exists the potential for serious injury
or death. ElectrcianTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!
|
05-23-2008, 12:52 AM
|
#2
|
|
Member
Join Date: May 2008
Location: CA
Posts: 32
|
is this the million dollar question or what?
no clues? 
hurry up.
|
|
|
|
|
05-23-2008, 01:02 AM
|
#3
|
|
Master Apprentice
Join Date: Jan 2008
Location: Eugene, Oregon
Posts: 293
|
What is it running under? As long as it is not under a driveway or road you shouldn't. I don't have my codebook on me so I can not find a reference for you at the moment.
__________________
Kletis... 
|
|
|
|
|
05-23-2008, 09:23 AM
|
#4
|
|
Junior Member
Join Date: May 2008
Location: Massachusetts
Posts: 3
|
MV cable is often in conduit which is sometimes encased in concrete but it is not required. Sometimes the cable is direct buried with no conduit at all.
|
|
|
|
|
05-23-2008, 10:34 AM
|
#5
|
|
Member
Join Date: Mar 2007
Location: New jersey
Posts: 76
|
depends what kind of conduit see art 330.50 and table 300.50 if non metalic see note 2-2 ( yes )depending on listing.My personal opinion is to install conduit on standoffs,encase with concrete,colored,backfill with sand,and metal marking tape.This is too much juice to do the min required.
|
|
|
|
|
05-23-2008, 04:04 PM
|
#6
|
|
"A" inside wireman
Join Date: Sep 2007
Location: Ocean, NJ
Posts: 3,951
|
Quote:
Originally Posted by DEA AGENT
Does an underground conduit carrying medium voltage cable have to be encased in concrete?
The specs say to bury with sand, but the general says we must use concrete. I don't see anything about this in the NEC...
|
What not just let the general decide? With a SN like "DEA AGENT" why aren't you posting on an ABC site
(CIA, DIA, NIA, NSA, NDA, FBI, ETC)?
__________________
A Veteran - whether active duty, retired, guard or reserve - is someone who, at one point in his life, wrote a blank check made payable to "The United States of America," for an amount of "up to and including my life."
"One Nation Under God"
|
|
|
|
|
05-23-2008, 07:26 PM
|
#7
|
|
Member
Join Date: May 2008
Location: CA
Posts: 32
|
Quote:
Originally Posted by Louieb
depends what kind of conduit see art 330.50 and table 300.50 if non metalic see note 2-2 ( yes )depending on listing.My personal opinion is to install conduit on standoffs,encase with concrete,colored,backfill with sand,and metal marking tape.This is too much juice to do the min required.
|
I agree. He isn't asking for red dye slurry, but 3,000 psi concrete. The only problem is that we will eat the cost, but oh well....not that big o' deal.
Quote:
What not just let the general decide? With a SN like "DEA AGENT" why aren't you posting on an ABC site
(CIA, DIA, NIA, NSA, NDA, FBI, ETC)?
|
ECT? I am not familliar with that department. It must be for super secret redneck robot alien pirate ninjas only.
|
|
|
|
|
05-23-2008, 11:20 PM
|
#8
|
|
"A" inside wireman
Join Date: Sep 2007
Location: Ocean, NJ
Posts: 3,951
|
Quote:
Originally Posted by DEA AGENT
I agree. He isn't asking for red dye slurry, but 3,000 psi concrete. The only problem is that we will eat the cost, but oh well....not that big o' deal.
ECT? I am not familliar with that department. It must be for super secret redneck robot alien pirate ninjas only.
|
It was stated ETC was that too many letters for you?
__________________
A Veteran - whether active duty, retired, guard or reserve - is someone who, at one point in his life, wrote a blank check made payable to "The United States of America," for an amount of "up to and including my life."
"One Nation Under God"
|
|
|
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
