Free Shipping on ALL Wire Orders


Account & Orders

10-3 Copper UF-B Underground Feeder and Branch Circuit Cable




Southwire® copper UF-B cable is generally used as feeder to outside post lamps, pumps, and other loads or apparatus fed from a distribution point in an existing building as specified in the 2011 National Electrical Code. UF-B cable may be used underground, including direct burial. Multiple conductor UF-B cable may be used for interior branch circuit wiring in residential or agricultural buildings at conductor temperatures not to exceed 90°C (with ampacity limited to that for 60°C conductors) as specified by the National Electrical Code. UF-B can be used in applications permitted for NMC in Section 334.10(B) of the National Electrical Code. Voltage rating for UF-B cable is 600 volts.


Southwire® copper UF-B cable is manufactured as a 2 or 3 conductor cable, with or without a ground wire. Copper conductors are annealed (soft) copper, solid or compressed stranded. Phase conductors are polyvinyl chloride (PVC) insulated, nylon jacketed, color coded for identification purposes. Jacketed with sunlight, moisture and fungus resistant gray PVC.

Standards & References

Southwire® copper UF-B cable complies with the following:

  • ASTM – B3 and B-8
  • UL Standard 83
  • UL Standard 493
  • Federal Specification A-A-59544
  • National Electrical Code, NFPA 70, 2011 Edition

Additional information



Manufacturer Part Number




Conductor Types

3 – #10 AWG Solid Insulated Copper Conductors (Black, Red, and White)

Non-Conductor Wire

1 – #10 AWG Uninsulated (Bare) Solid Copper ground wire

Direct Burial Rated

YES, Direct earth burial rated cable


30 Amps

Jacket Type

PVC Jacket (Polyvinyl Chloride)

Temperature Rating


Voltage Rating

600 Volts

NEC Compliance

2023 NEC (Current Edition) Compliant




There are no reviews yet.

Be the first to review “10-3 Copper UF-B Underground Feeder and Branch Circuit Cable”

Your email address will not be published. Required fields are marked *