ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
Anyone hiring inspectors?
by HotLine1. 03/27/17 08:03 AM
Old decora style outlets
by Admin. 03/25/17 11:40 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
fuse rejectors
by HotLine1. 03/24/17 07:53 AM
Another Forum Update
by Admin. 03/22/17 03:04 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,583 Are you busy
166,394 Re: Forum
160,691 Need opinion
Who's Online Now
1 registered members (HotLine1), 76 guests, and 15 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#90625 - 12/05/04 09:32 AM PVC run  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
Can PVC pipe be run outdoors from a panel down to the ground or up to the attic in a home? Can it be run the same places EMT is run? Is mechanical protection a problem?


The Golden Rule - "The man with the gold makes the rule"

2017 / 2014 NEC & Related Books and Study Guides

#90626 - 12/05/04 11:44 AM Re: PVC run  
CharlieE  Offline
Member
Joined: Apr 2004
Posts: 200
Indianapolis
You are not permitted to use PVC pipe for that application but you are permitted to use PVC conduit "where not subject to physical damage if identified for such use." If subject to physical damage, schedule 80 PVC conduit is to be used. [Linked Image]

- - - - - - - - - - - - - - - - - - - - - - - - - - -
Charlie Eldridge, Indianapolis, Utility Power Guy


Charlie Eldridge, Indianapolis Utility Power Guy

#90627 - 12/05/04 11:51 AM Re: PVC run  
earlydean  Offline
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
I have heard that of all the different types of rigid non-metallic conduit, only PVC is approved for use above ground. Asbestos, concrete, transite, Orangeburg, fiberglass conduit all have to be underground or in concrete.
Has anybody even installed any Orangeburg lately?


Earl

#90628 - 12/05/04 12:05 PM Re: PVC run  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
Schedule 80 is marked "Ridgid" but does that mean you can use it like Ridgid (or IMC) or just like emt is used?
Ridgid can be used 6" below ground, where PVC is 18".


The Golden Rule - "The man with the gold makes the rule"

#90629 - 12/05/04 12:17 PM Re: PVC run  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
Coming out of the bottom of a panel and into the ground, you would either have to run EMT, then convert to metal ridgid in the ground until it reaches 18" then convert to PVC. Or could we just run PVC all the way from the panel down to the ground and to the load?, if so, it seems we could stay at 6", or would it have to go to 18".
Or PVC from the panel to metal ridgid then back to PVC at 18"? All Schedule 80 Ridgid PVC if course. UMM..


The Golden Rule - "The man with the gold makes the rule"

#90630 - 12/05/04 01:57 PM Re: PVC run  
tdhorne  Offline
Member
Joined: Mar 2001
Posts: 345
Maryland, USA
You can run the PVC conduit of either grade from the panel into the ground unless it is subject to physical damage. One example would be in a grassy area were power trimmers might be used. All PVC conduit must be eighteen inches deep to the top of the conduit unless it is encased in concrete or protected by a concrete pad or guard above it. If the raceway is subject to severe physical damage you would use rigid or intermediate metal conduit. An example of severe physical damage exposure is a driveway next to a house or a surface run on the interior of a garage at a height that may be struck by a vehicle.
--
Tom H


Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison

#90631 - 12/05/04 04:48 PM Re: PVC run  
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Schedule 80 PVC conduit can be used in areas subject to physical damage.

This is the wording from the UL White Book.

UL MARK
The Listing Mark of Underwriters Laboratories Inc.


Schedule 80 conduit has a reduced cross-sectional area available for wiring space and is suitable for use wherever Schedule 40 conduit may be used. The marking ‘‘Schedule 80 PVC’’ identifies conduit suitable for use where exposed to physical damage and for installation on poles in accordance with the NEC.

Roger



Member Spotlight
HappyElectrician
HappyElectrician
Penn USA
Posts: 31
Joined: December 2011
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.019s Queries: 14 (0.003s) Memory: 0.7827 MB (Peak: 0.9341 MB) Zlib enabled. Server Time: 2017-03-27 20:31:41 UTC