URD In Conduit sizing

[Mdsparky]

I am trying to size a PVC conduit Schd 80 for two sets of 250 kcmil -3conductor URD . Would I treat each cable as 1 conductor ? or are they to be treated as six conductors ? I seem to remember cables being treated as 1 conductor using the diameter to find the area of each cable? I'm in the 2023 and it's been changed a bit . Any help would be appreciated.

 

[Mdsparky]

I think I answered my own question .Chapter 9- Note 9. Tells me to treat them as individual conductors . Sorry for bugging you folks ... unless of course I'm mistaken ? ;-)

 

[LarryFine]

Is there an outside jacket or just the individual conductors?

 

[augie47]

A word of caution.. "URD" is not an approved NEC wiring method unless it is a dual rated conductor such as URD-USE, URD-RHW.
URD as a stand alone rating is a utility covered conductor.

 

[Mdsparky]

Is there an outside jacket or just the individual conductors?

No sheath .Sprialed conductors USE rated

 

[electrofelon]

Plexed conductors are not cables, however 2 plexed sets are going to not fit efficiently so I would use caution when sizing.