HDPE Sch 40 Raceway

Status
Not open for further replies.
G

gary b

Member
Is it permissable to install heat trace cable with teflon tubing and wrapped together with fiberglass tape in HDPE conduit? If so, is it found in the NEC?
 
Look at it this way Gary....you posted at about 11:30pm on a Saturday night...here it is 12 hours later (11:30AM on a Sunday morning)...let the people come back from church/recover from hangovers and see what happens. :)


George or Pierre or Iwire will *probably* have an answer :)
 
First I would read the installation instructions for the heat tape. If there are no prohibitions, I would look to the temperature rating of HDPE which I believe (from memory) is 122 degrees F. If the heat tape does not violate this, and the instructions do not say no... maybe???

I have never seen this done. What are you attempting to perform with this installation?
Where is this installation (it would have to be outside and underground)?
 
Re: HDPE Sch 40 Raceway

gary b said:
Is it permissable to install heat trace cable with teflon tubing and wrapped together with fiberglass tape in HDPE conduit? If so, is it found in the NEC?
Click to expand...

what would be wrong with such an installation?

anything not specifically prohibited is allowed.

this is a pretty common way of heat tracing and insulating sample lines.
 
Tom? or Dick? or Harry? will *probably* have an answer

? - name changed to protect the innocent
? - name changed to protect the innocent
? - name changed to protect the innocent
 
Sounds to me like a good way to comply with 427.11.

Posted by Pierre:

I would look to the temperature rating of HDPE which I believe (from memory) is 122 degrees F.
Click to expand...

The conduit could be considered an additional form of protection, so I don't think you are limited to its temp. rating. In other words, you aren't using the HDPE for its intended purpose.

Steve
 
Status
Not open for further replies.
Top