[clpcfd]

Where do if find allowed amps for urd in code

[stanfortyman]

Typically it would be in the old 310.15(B)(6), since URD is typically used for residential service entrance.

[tkrussell]

However, "URD" will not be found in the NEC, as it is a name for an assembly. Usually URD cable is aluminum wire that uses XLPE or XHHW insulation.

[stanfortyman]

Good point. I always forget to mention that.
Although in the resi service sizing chart they don't mention insulation, just size, right?
Now I have to go look it up. :/

[tkrussell]

Yes, Table 310.15(B)(6), does refer to applicable insulation types .

[stanfortyman]

Ah yes! In the title. Funny the things you overlook when you look st something so many times.

Table 310.15(B)(7) Conductor Types and Sizes for
120/240-Volt, 3-Wire, Single-Phase Dwelling Services and
Feeders. Conductor Types RHH, RHW, RHW-2, THHN,
THHW, THW, THW-2, THWN, THWN-2, XHHW,
XHHW-2, SE, USE, USE-2

[tkrussell]

Doncha just hate it when they hide stuff right in front of us? I do that all the time.