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12/3 UF-B Copper Cable

Underground feeder cable for direct burial branch circuits, with conductors molded into a solid PVC jacket. Rated 600 V, 90 C.

  • Conductor: solid copper
  • Voltage rating: 600 V
  • Temperature rating: 90 C
  • Listing: UL Listed, RoHS Compliant

Per foot at 25 ft$1.24/ft

Product image of UF-B, representative of the family

Choose colors and lengths

Color: Gray

By the foot: cut to your length, final sale. Spool: the factory put-up, returnable uncut, never more per foot than a cut. Cut wire is final sale.

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    • How to buy Gray, line 1
      $1.24/ft
      Ships by Fri, Oct 9
Total $0.001 line

Spools ship by Thu, Oct 8. Cut lengths ship by Fri, Oct 9.

For an order placed now. Orders after 12 PM ET, and on weekends and holidays, count from the next business day.

You get a tracking number by email the day it ships.

Free UPS Ground shipping from $499 to the lower 48. A reel over 150 lb ships by freight, charged in the cart.

Cut wire is final sale. Uncut spools can come back within 30 days for a 15 percent restocking fee. Returns policy

Questions about this wire?

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At a glance

Ampacity20 A (NEC Table 310.16, 60 C column)
Largest breaker20 A (NEC 240.4(D))
Voltage drop at 100 ft7.92 V, 6.6 percent at 20 A and 120 V single phase
Run length for 3 percent dropAbout 45 ft one way at 20 A and 120 V

Questions about this size

What breaker can 12/3 UF-B Copper Cable go on?
Up to 20 A. NEC 240.4(D) limits 12 AWG copper to 20 A of overcurrent protection whatever the ampacity table says.
How far can I run it before voltage drop is a problem?
At 20 A on a 120 V single phase circuit, about 45 ft one way keeps the drop at 3 percent, the figure an informational note to NEC 210.19(A) suggests for branch circuits. Try other loads in the voltage drop calculator.
Can it be buried directly in the ground?
Yes. It is rated for direct burial; the minimum cover is in NEC Table 300.5 (24 in. for direct burial under the general condition).
Can I buy it by the foot?
Yes, cut to length in whole feet from 25 ft, or on 250, 500, 1,000 ft spools. Cut wire is final sale; uncut spools can be returned within 30 days.

Voltage drop calculator

Full specifications

TypeUF-B
Gauge12/3
Conductors3
Conductorcopper
Strandingsolid
InsulationPVC
Voltage rating600 V
Temperature rating90 C
ListingUL Listed, RoHS Compliant
Ampacity, NEC Table 310.16, 60 C column20 A
Jacket colorGray
Sold by the footFrom 25 ft to 5,000 ft, in whole feet
Standard spools250, 500, 1,000 ft
Ships in1 to 2 business days from the order day

Insulation, ratings, listing and weight are confirmed from the manufacturer's sheet with your quote.

Spec sheet on request.

Questions

What is the smallest cut?
25 ft for this product, in whole feet, up to 5,000 ft per row. Each length ships on its own coil.
Can I return cut wire?
No. Cut wire is final sale. Uncut, unopened spools and boxes can come back within 30 days for a 15 percent restocking fee.
When does it ship?
The ship dates beside Add to cart are for this product and count business days in Eastern time. You get a tracking number by email the day it ships.
From $/ft