Sch 20 PVC?

[JJWalecka]

Is schedual 20 (real thin) PVC only listed for concrete encasement? For the life of me I can not recall the trade name for it. Any feedback is appreciated?

JJ

 

[augie47]

I believe there is a type A which is approved for use encased in concrete (any location) and a type EB which is approved for concete encased in outdoor trenches. Both of these are thinner than (Sch 40) but 'Im not sure what schedule they might be considered.

 

[mdshunk]

it's called P&C duct

 

[JJWalecka]

It would have to be encased in concrete. Granulated fill would not suffice

JJ

 

[LarryFine]

Think of it as a concrete form that remains in place. Sort of make-yer-own concrete duct.

 

[acrwc10]

It would have to be encased in concrete. Granulated fill would not suffice

JJ

One of the local utilitys in my area used to allow it for under ground services, don't know if they still do, but it just needed to be in sand covering. Very cheap very thin.

 

[iwire]

Is schedule 20 (real thin) PVC only listed for concrete encasement? For the life of me I can not recall the trade name for it. Any feedback is appreciated?

JJ

As far as I know you can not use schedule 20 PVC for any NEC application.

Utilities can and do use it.

 

[sandsnow]

here is what UL lists for the thinner stuff

http://database.ul.com/cgi-bin/XYV/...n=versionless&parent_id=1073985967&sequence=1

 

[JJWalecka]

Thank you very much everyone

JJ

 

[raider1]

As far as I know you can not use schedule 20 PVC for any NEC application.

Utilities can and do use it.

Utility installations are the only place I have ever seen this type of PVC used.

Chris

 

[mdshunk]

As far as I know you can not use schedule 20 PVC for any NEC application.

Utilities can and do use it.

Actually, you can. If the installed conductors (cable, rather) is rated for direct burial, it doesn't matter that it happens to be pulled in P&C duct.

 

[iwire]

Actually, you can. If the installed conductors (cable, rather) is rated for direct burial, it doesn't matter that it happens to be pulled in P&C duct.

Then you are really not using it under the NEC are you?

 

[raider1]

As far as I know you can not use schedule 20 PVC for any NEC application.

If it is indeed listed as Type A rigid nonmetallic underground conduit the it can be installed in accordance with Articles 352 and 353. This information comes from the UL whitebook.

Also if you look in Chapter 9 Table 4 you will see a specific table for Type A rigid PVC conduit.

Chris

 

[acrwc10]

Is schedual 20 (real thin) PVC only listed for concrete encasement? For the life of me I can not recall the trade name for it. Any feedback is appreciated?

JJ

The local POCO uses "DB 120" for the under ground, And don't look at it cross eyed or it will break.

 

[JJWalecka]

The local POCO uses "DB 120" for the under ground, And don't look at it cross eyed or it will break.

Thus the reason I wondered if it should be concrete encased

JJ

 

[kbsparky]

Central vacuum pipe is made from this stuff, I believe ...

Got gobs of it in my house, works really well, too!

 

[iaov]

I know Sch. 40 & 80 are mentioned in the "Book" but I don't ever recall seeing Sch.20 mentioned. Based on that I would say no you can't use it.

 

[nakulak]

I thought that stuff fell under ENT ?

 

[iaov]

I thought that stuff fell under ENT ?

Could be. I never heard of it before this thread.

 

[acrwc10]

Could be. I never heard of it before this thread.

Article 362 is ENT, although it is not the same as P&C or DB120.