URD

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frofro19

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Location
VA.
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Master Electrician
I read somewhere that URD wire is not approved from the NEC for direct burial. Such as the 2-2-2-4 AL Dyke wire. Any code preventing this application such as a feeder from a 24 KW Generator to a ATS?
 
If the URD is also listed as USE, you could use it for an NEC installation, otherwise, you can't as URD is not a wire or cable type found in the NEC.
 

URD cable and the NEC

My question is ... will the NEC allow URD Cable to be direct burial and terminated directly into a Service Panel on the inside of a building or will you have to transition on the outside of the building and bring another type cable into the panel . Thanks for your ideas:
forums.mikeholt.com

See if this article helps you.

Also from... ALUMINUM MOBILE HOME FEEDER CABLE VS. ALUMINUM URD TRIPLEX QUADRUPLEX CABLE: A COMPARISON

Common Facts Confusions about Additional Applications of A URD Cable​

  • URD aluminum cable translates as underground residential distribution cable.
  • A URD cable that carries nothing but a URD rating is not permitted for applications indoors. If the cable does not have additional ratings, it is only approved for utility work. In itself, URD cable is not the title recognized by the National Electrical Code for NEC applications.
  • However, the cable can be used for various other applications, including home feeders, electrical panels, and direct burial, if they have an additional rating required for this.
  • The confusion regarding URD cable stands from the fact that some electricians refer to aluminum cables in general as URD. However, if you wish to use these cables for anything other than utility service, you should always check additional ratings.
 
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