ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Violation?
by HotLine1 - 01/19/23 09:10 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 112 guests, and 13 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#87925 05/04/04 12:35 PM
Joined: May 2004
Posts: 1
C
coulomb Offline OP
Junior Member
I would like to install underground wiring along a long curved driveway for very low profile light fixtures (path lighting). I don't want to stub up PVC 90 degree ells into above ground junction boxes. Can PVC
"T" fittings be buried and used as junction
boxes? What are my code approved options here? The driveway is 250 feet long and the fixtures will be 25 feet apart. Thanks!

Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

#87926 05/04/04 01:25 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
You really can not bury J-boxes or conduit bodys ("T"s)

Quote
314.29 Boxes and Conduit Bodies to Be Accessible.
Boxes and conduit bodies shall be installed so that the wiring contained in them can be rendered accessible without removing any part of the building or, in underground circuits, without excavating sidewalks, paving, earth, or other substance that is to be used to establish the finished grade.

Exception: Listed boxes shall be permitted where covered by gravel, light aggregate, or noncohesive granulated soil if their location is effectively identified and accessible for excavation.

The exception gives you a little leeway , but the box will have to be listed for direct burial.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#87927 05/04/04 03:59 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
That is darn little leeway, I can only think of one type of box that is listed for being installed in the ground & it is large & expensive.

How about Type UF cable? UF could be run up a post. There is a non-metallic post on the market that will conceal the cable where it comes up and the fixture can attach right to the post & it is available in a fairly low profile.

Tom


Few things are harder to put up with than the annoyance of a good example.

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Scott35
Scott35
Anaheim, CA. USA
Posts: 2,722
Joined: October 2000
Top Posters(30 Days)
BigB 9
triple 3
Popular Topics(Views)
302,347 Are you busy
231,744 Re: Forum
216,374 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5