6/3 UF-B Underground Feeder Cable - 600V | Nassau National Cable
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6/3 UF-B Stranded Copper Underground Feeder Cable 600V

6/3 UF-B Stranded Copper Underground Feeder Cable 600V
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6/3 UF-B Stranded Copper Underground Feeder Cable 600V
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6/3 UF-B Stranded Copper Underground Feeder Cable 600V
SKU: NNC3754X
underground-feeder-cable-uf-b-copper-600v

Availability: In stock

Min Length: 1 FT
Max Length: 10000 FT
Price:
Regular price
$3.58 /FT
Sale price
$3.58 /FT
Shipping Cost Calculated at Checkout. Standard Lead Time is 1 to 6 Business Days.
Free Shipping: On orders above $1000
Quantity must be 1 or more

Enter the required footage in the quantity box - Cut to one length

Customer Reviews

Based on 232 reviews
96%
(222)
4%
(10)
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D
Derek smith
Reasonable cost wire

Price was great delivery was quick and reliable.
Will buy again for sure.

J
Jeffrey Mahlmann

Delivered per order. 2nd Order. Both excellent

C
Chuck Conrad
Great Service

Very competitive price and fast shipping. They'll be my first stop from now on. Far exceeded my expectations.

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Product Information
Specification

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

  • Allowable Ampacity (Direct Burial): 55 amps

  • Allowable Ampacity (In Duct): 55 amps

Also Known As

  • 6/3 Copper Underground Feeder Cable

  • 6/3 Copper Direct Burial Feeder Cable

  • 6/3 Branch Circuit Wiring Cable

  • 6/3 UF-B Wire

  • 6/3 Copper Direct Earth Burial Cable

  • 6/3 Copper Branch Circuit Cable

  • 6/3 UF-B Direct Burial Wire

  • 6/3 UF Wire

  • Direct Burial Cable

  • 6/3 Underground Wire

Description

The 6/3 UF-B Underground Feeder Cable is designed to deliver power from residential, commercial, and industrial buildings to various outdoor installations. It is suitable for:

  • Direct burial without conduit

  • Sunlight exposure in outdoor environments

  • Feeder or branch circuits with appropriate overcurrent protection

With a 600-volt rating, this cable ensures reliable performance in outdoor, underground, and wet environments.

UF-B General Applications

  • Underground feeding

  • Outdoor lighting systems

  • Outdoor outlets and receptacles

  • Direct burial installations

  • Wet or damp locations

  • Pump systems

  • HVAC unit wiring

  • Underground branch circuits

  • Indoor wiring in areas exposed to moisture

Specific Applications for 6/3 UF-B Wire

  • 240V Circuits with Neutral: Ideal for large appliances or systems requiring both 240V and a neutral, such as ranges, dryers, and subpanels.

  • High-Capacity HVAC Systems: Perfect for powering larger HVAC units with significant current demands.

  • Well Pumps: Suitable for heavy-duty well pump systems.

Construction

Conductor:

  • Stranded Type THHN/THWN conductors laid parallel with an uninsulated grounding conductor

  • Made of stranded annealed bare copper

Insulation:

  • Insulated with a durable PVC jacket with a nylon covering

  • Resistant to:

    • Moisture

    • Grease

    • Corrosion

    • Sunlight

    • Chemicals

Specifications

  • Size (AWG): 6

  • Weight per 1,000 ft: 478 lbs

  • Outside Diameter: 1.223 x 0.361 inches

  • Number of Conductors: 3

  • Number of Strands: 7

  • Jacket Material: PVC

  • Insulation and Jacket Thickness: 35 mils

  • Jacket Thickness: 45 mils

  • Ground Size: 10

Standards and Compliance

  • UL Standard 493 for Thermoplastic-Insulated Underground Feeder and Branch Circuit Cables

  • ASTM B3 and B8

  • UL Standard 83

  • Federal Specification A-A-59544

  • Recognized for interior wiring in wet, dry, or corrosive locations under the National Electrical Code (NEC)

  • Compliant with NEC Article 339-3 (4) for Non-Metallic Sheathed Cable installation

  • Meets NEC Articles 300-4(b) and 339

  • RoHS / REACH Compliance

Compatible with Manufacturer

Service Wire & Co : UFB6/3G6
Southwire : 147827


*Data provided on this page is subject to change based on different manufacturers' variances
** Images are for display purposes only refer to Product Technical Details for accurate information on the product.
In the case the material only comes in a predetermined color or doesn’t come with any color
Download PDF Spec Sheet

FAQ's

What is UF-B Wire?

UF-B wire (Underground Feeder - Type B) is an electrical wire used for direct burial in the ground without needing additional conduit. It's water-resistant, sunlight-resistant, and suitable for outdoor and underground applications, particularly for powering outbuildings and exterior lighting.

What are the particular applications of 6/3 UF-B Cable?

6/3 UF-B wire with ground feeds power to large appliances and subpanels.

The applications include:

  • Feeding sub-panels
  • Large outdoor installations
  • Outdoor lighting systems
  • Power supply to outbuildings
What is the difference between UF-B wire with or without ground?

UF-B wire with ground is used for applications where additional safety is needed, such as when the wire is exposed to moisture. UF-B without ground can be used when local codes don't require grounding (f.e. lighting circuit where local code allows it).

What is UF-B cable permitted for use?

Article 340 of the NEC permits UF-B cable to be used for direct burial without the conduit. It also allows it for wet, damp, and corrosive locations. It can also be used above ground if UV-resistant and in conduit. UF-B is suitable for branch and feeder circuits for outbuilding and exterior applications.

Can UF-B wire be used indoors?

You can use UF-B indoors, but this is not a common practice. NEC does not ban UF-B indoors, but NM-B and THHN in conduit are more common interior cables that are easier to install.

What is the difference between 6/3 and 6/2 UF-B wire?

6/3 UF-B wire has three insulated conductors (black, white, red) and a ground, ideal for:

  • 240V Circuits with a Neutral (e.g., ranges, dryers, subpanels).
  • High-Demand HVAC Systems or large equipment.
  • Well Pumps with multiple loads.

In comparison, 6/2 UF-B wire is limited to simpler 240V or 120V circuits without a neutral.

Can UF-B be buried?

The cable is designed to be buried. The standard burial depth is 24 inches.

Can UF-B wire be put in conduit?

It is possible to run UF-B through PVC or metal conduit for underground applications, but THWN is a preferable option as it is easier to install.

Can UF-B wire be exposed?

UF-B wire can be exposed if it is UV-resistant and not subject to physical damage.

How to strip UF-B wire?
  • Turn off the power for safety.
  • Slice the gray outer jacket carefully without cutting the inner wires.
  • Peel back the jacket to expose the insulated wires.
  • Use wire strippers to remove the insulation from the ends of each wire, typically about 3/4 inch.
  • If there's a ground wire, strip it similarly if insulated.
Reviews

Customer Reviews

Based on 232 reviews
96%
(222)
4%
(10)
0%
(0)
0%
(0)
0%
(0)
D
Derek smith
Reasonable cost wire

Price was great delivery was quick and reliable.
Will buy again for sure.

J
Jeffrey Mahlmann

Delivered per order. 2nd Order. Both excellent

C
Chuck Conrad
Great Service

Very competitive price and fast shipping. They'll be my first stop from now on. Far exceeded my expectations.

Get in Touch
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Email info@nassaunationalcable.com

Call Us: 1-516-482-6313    Text Us: 1-516-703-3460

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