Installation Scenarios

[George Stolz]

Is there actually a list?because I have a hard time figuring out alot of the abbreviations...

The Abbreviations are found in the FAQ in the NEC forum; here is a direct link.

 

[George Stolz]

Tom,
If is is marked "USE" without other ratings, as is most URD, then it is an "outside only" cable.

Even if it had other markings, the sections you quoted would forbid it's use indoors, wouldn't it?

 

[don_resqcapt19]

George,
If the product has more than one listing and one of those listing is as a conductor that is permitted inside a building, it is my opinion, that under that condition you could use it inside the building. Kind of like DLO (diesel locomotive wire) where if it is only marked DLO we can't use it for a NEC application, but if it is marked DLO/RHH or something like that we can.

 

[George Stolz]

Don

My supplier carries URD that is service entrance rated. I don't see how that would be a violation 338.12(B) 1

Here's the letter you asked me to post:

 

[A/A Fuel GTX]

Thanks George......Your computer skills are second to none...

 

[George Stolz]

Well, when I saw what you had, I did it the easiest way - what did you want to see?

edit to add:

Southwire Company
One Southwire Drive
Carrollton, Georgia 30119
Telephone (770) 832-4242
______________________________________________________________________________



Date: 8/4/08

REF: RHH/RHW/USE Conductors

There is some confusion about what conductors may be used inside buildings. NEC Article 338 states that USE cables shall not be used for interior wiring. This is because the USE aluminum conductors have the 1350 alloy instead of the 8000 series alloy required for use in side buildings. Also, the insulation is not flame retardant.
NEC Article 310.14 Aluminum Conductor Material
“Stranded aluminum conductors 8 awg through 1000 kcmil marked as Type RHH, RHW, XHHW, THW, THHW, THWN, THHN, service-entrance Type SE Style U and SE Style R shall be made of an AA-8000 series electrical grade aluminum alloy conductor material”.
With the triple rated RHH/RHW/USE aluminum conductor, the aluminum is the required 8000 series aluminum and the insulation is flame retardant so, it can be run in buildings.
This product may be used as USE outside the building and as a RHH/RHW conductor inside the building. Of course, when installed in conduit, it can be used outside as a RHW conductor also.
The single rated USE or USE-2 cable can not be used inside buildings.


If you have any questions, please call me.


Best regards,
Paul White
Manager, Electrical Applications
Electrical Division
Southwire Company

 

[LarryFine]

Thanks George......Your computer skills are second to none...

"Is this that new thing called 'sarcasm'?" ~ Shallow Hal

 

[A/A Fuel GTX]

what did you want to see?

edit to add:

I was just saying "thanks" for helping me get the letter posted. No sarcasm intended.....:smile:

 

[George Stolz]

Oh, okay. The comment combined with the :roll: left me thinking I had screwed something up.