Aluminum #2 triples direct burial cable

[mlnk]

Ramapo XLP EYS Aluminum #2 triplex (with outer jacket) direct burial power cable is rated 140 amps in above ground conduit. How would I determine what it is rated in underground conduit? What would it be rated for use in an attic with no conduit?

 

[ptonsparky]

Call the maker of the cable and ask for a chart. Ask your supplier.

 

[don_resqcapt19]

I would expect that is an "outside" only cable and cannot enter the building. #2 aluminum is not a 140 amp conductor in the NEC world.

 

[ptonsparky]

http://www.cable.alcan.com/NR/rdonlyres/36F004B9-2744-41E4-8721-D4E1530DAAF7/0/600VUndergroundBrochure.pdf

Note the note at the bottom of the page. Current ratings are not for use with NEC

 

[cdcengineer]

I have always used 310.16 (now 310.15(B)(16) to figure the ampacity, but I believe you must consider the terminal rating when figuring ampacity. I was told 500 AL USE could be used for 400A, but I don't agree. It's good for 350A or 310 A if ther terminals on the gear are rated at 75C.

 

[cdcengineer]

Would NEC table 310.60(C)(84) come into play with direct burial tri-plex? I thought we'd still be limited to 310.15(B)(16) because most gear is rated with 75C terminals

 

[Hv&Lv]

Ramapo XLP EYS Aluminum #2 triplex (with outer jacket) direct burial power cable is rated 140 amps in above ground conduit. How would I determine what it is rated in underground conduit? What would it be rated for use in an attic with no conduit?

Look at 338.12(B)
Also, the cable you are talking about is utility cable, meaning it may or not be listed for the purposes you propose to use it. It may or may not have the required markings required by listing agencies for use in NEC applications. The amperages are also for 90 degree terminations.


http://www.awcwire.com/ProductTOC.aspx?id=Low-Voltage-Underground-Power-Cable