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6
6/3 UF-B Stranded Copper Underground Feeder Cable Gray 600V

6/3 UF-B Stranded Copper Underground Feeder Cable Gray 600V

5(312 ratings)

Best price now

$5.49at NassauNationalCableChecked Nov 10

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Price facts

  • Last seen at $5.49 at NassauNationalCable on Nov 10.

Our take on the 6/3 UF-B Stranded Copper Underground Feeder Cable Gray 600V

This is 6-gauge, 3-conductor UF-B cable with stranded copper conductors, rated 600V and listed for direct burial and sunlight exposure. It carries 55 amps whether buried directly or run in duct, which makes it a feeder or branch-circuit run to outbuildings, pumps, and outdoor lighting. Against 6/3 NM-B, it costs more but needs no conduit underground and tolerates wet locations. Buyers rate it highly, and the common notes are its stiffness to pull and the need for the right overcurrent protection.

Best forRunning power to a detached garage, shed or shopBuried feeders to well pumps and outdoor equipmentOutdoor branch circuits exposed to sun and moistureLong 240V runs that need a 55-amp feeder
Pros
  • Rated for direct burial, so no conduit is needed underground
  • Sunlight-resistant jacket for exposed outdoor runs
  • Stranded copper conductors pull and bend more easily than solid
  • 55-amp allowable ampacity in both burial and duct
  • 600V rating covers feeder and branch-circuit use
Cons
  • Heavy and stiff, so long pulls take two people
  • Needs overcurrent protection sized to the run
  • Three conductors plus ground means a bulky jacket to strip
  • Not for indoor wiring where NM-B is allowed

6/3 UF-B Stranded Copper Underground Feeder Cable Gray 600V prices at every store

  • NassauNationalCableNew

    In stockReturn policy

    $5.49Checked Nov 10
    Visit NassauNationalCable

What reviewers say

  • 5 / 5312 ratings

Buyers give it top marks, mostly for solid copper, a tough jacket and clean direct-burial runs. The recurring complaints are weight and stiffness on long pulls and the care needed stripping the jacket.

What people mention
  • BuildPraisedOwners describe a thick, durable jacket that survives burial and sunlight.
  • ConductorsPraisedStranded copper is called easier to bend and pull than solid wire.
  • HandlingCriticisedBuyers say the cable is heavy and stiff, especially on long pulls and in cold.
  • StrippingMixedThe tough jacket protects well but takes patience to strip without nicking conductors.
  • AmpacityPraisedBuyers confirm the 55-amp rating suits their feeder and pump circuits.

About the 6/3 UF-B Stranded Copper Underground Feeder Cable Gray 600V

This is 6/3 UF-B underground feeder cable with three stranded copper conductors and an uninsulated grounding conductor. The conductors are Type THHN/THWN, laid parallel, and made of stranded annealed bare copper. It is rated 600 volts and 75°C.

A tough PVC jacket protects against mechanical damage, moisture, chemicals and corrosion. The jacket also resists sunlight, and the conductors resist grease and chemicals.

The cable is permitted for underground use, including direct burial in earth, as feeder or branch circuit cable where overcurrent protection is provided. It can also be used for interior wiring in wet, dry or corrosive locations under recognized National Electrical Code (NEC) wiring methods. It may be installed as non-metallic sheathed cable under NEC Article 339-3 (4).

Type
UF-B underground feeder cable
Wire size
6 AWG
Conductors
3, stranded copper, with a size 10 uninsulated ground
Strands
7
Jacket
PVC
Insulation thickness
35 mils
Jacket thickness
45 mils
Outside diameter
1223X361
Weight
478 lbs per 1,000 ft
Voltage
600 V
Temperature
75°C
Ampacity
55 A, direct burial or in duct
Color
Gray

Questions and answers

Can this cable be buried without conduit?
Yes. UF-B is listed for direct burial and for exposure to sunlight, so it can go straight into a trench. Protect it where it leaves the ground and where vehicles may cross.
How many amps can 6/3 UF-B carry?
The allowable ampacity is 55 amps, both direct buried and in duct. Size the breaker and load to that figure and follow local code for derating.
What is the difference between UF-B and NM-B?
UF-B has a jacket rated for wet and buried locations; NM-B is for dry indoor spaces only. Both are 600V copper cable, but only UF-B belongs underground.
Does it include a ground wire?
Yes. It is a 6/3 with ground: three insulated conductors plus a bare ground, all stranded copper.
Can it be used indoors?
It can enter a building to reach a panel or junction, but it is not meant for general indoor wiring where NM-B is permitted. Check your local code.
Is the copper stranded or solid?
Stranded. That makes it more flexible to pull through bends than solid 6-gauge wire.
Where is the 6/3 UF-B Stranded Copper Underground Feeder Cable Gray 600V cheapest?
At NassauNationalCable, for $5.49, as of our latest check.
What do buyers say about the 6/3 UF-B Stranded Copper Underground Feeder Cable Gray 600V?
Rated 5 out of 5 from 312 ratings.

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Standards
UL 493, UL 83, ASTM B3 and B8, Federal Specification A-A-59544, RoHS/REACH
NEC
Articles 300-4(b), 339 and 339-3 (4)
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