Schedule 80 PVC Conduitl; isnt schedule 80, schedule 80

[ChrisC]

What is the main difference between plain schedule 80 conduit and electrical schedule 80 conduit. The main differences I could find is that the electrical is sun resistant and it has a temperature rating of 90 degrees where the plain schedule 80 has a temperature rating of 140 degrees. In the code book just lists PCV as schedule 80; can I use either one, my application will never see a spec of light. The last question I have is in regards to the fittings; I am looking for a 45 degree fitting that is not a sweeping bending 45 per say but a sharp 45 angle fitting. They make them for the regular but not the electrical, so can you use a plain fitting with electrical schedule 80.
Thank You

 

[bdarnell]

Are you referring to Sch 80 PVC for water or sanitary use ? The main difference is Article 110, Section 110.2 to be specific. It's not listed or approved for the application.

 

[steve66]

How would you pull wire through a sharp 45 degree bend? If you could, byou would probably damage the wire.

Steve

 

[bphgravity]

From what I understand, white PVC is tested for internal pressure whereas gray PVC is tested for external pressures. This is at least one major difference.

 

[dlhoule]

How would you pull wire through a sharp 45 degree bend? If you could, byou would probably damage the wire.

Steve

Now Steve, sometimes there is no damage to wire, due to the pvc breaking before you damage the wire.

 

[pierre]

And sometimes there is no damage to the conductors or the PVC, because you cannot pull the conductors any further :shock:

 

[haskindm]

PVC Conduit is reffered to as Type RNC Rigid Nometallic Conduit, and as such must be installed according to Article 352. 352.6 (2002 edition) states that RNC and its fittings must be listed. Plain schedue 80 (or 40 for that matter) is not listed, so it cannot be used for electrical work. That "sharp 45 degree fitting" is also not listed for electrical use. Also 352.44 tells youthat all bends must conform to the radius shown in 344.24 for rigid metallic conduit, which again would prevent you from using the sharp 45 degree fitting.