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UF-B
Building wire

UF-B

Underground feeder and branch-circuit cable with a robust overall sheath.

United States
Sizes, construction & electrical data
UF-B / TECHNICAL DATA

Sizes, construction & electrical data

Dimensional and electrical reference · Copper · 600 V

Conductor material
Copper (Cu)
Insulation material
PVC + nylon
Rated voltage
600 V
Maximum conductor temperature
90°C
Jacket / armour
PVC
Ampacity basis
2023 NEC Table 310.16; applicable correction and termination rules apply
Installation environment
Wet / dry, direct burial subject to code
Dimensional and electrical reference · Copper · 600 V
ConfigurationNominal area / conductormm²Conductor sizeAWG / kcmilInsulated conductorsDiameter over bare conductormmStrands per conductorInsulation wallmmBond / ground conductorNo. × AWGOuter jacket wallmmOverall dimensions / diametermmCopper weightkg/kmApproximate cable weightkg/kmMinimum bend radiusmmDC conductor resistance at 25°CΩ/kmAC resistance at 75°CΩ/kmInductive reactance at 60 HzΩ/kmReference ampacity, 60°C columnASelection
14/22.0811421.626Solid0.4061x140.7624.267x10.74455.1105.743.188.63210.7120.1915
14/32.0811431.626Solid0.4061x140.7624.267x14.75774.4144.458.428.63210.7120.1915
12/23.3091222.057Solid0.406—0.7624.648x9.80459.5105.738.15.4536.7680.17720
12/23.3091222.057Solid0.4061x120.7624.648x11.7687.8144.448.265.4536.7680.17720
12/33.3091232.057Solid0.406—0.7624.648x14.75787.8163.758.425.4536.7680.17720
12/33.3091232.057Solid0.4061x120.7624.648x15.9117.6194.963.55.4536.7680.17720
10/25.2611022.591Solid0.5331x100.7625.461x13.157136.9205.453.343.4124.2360.16430
10/35.2611032.591Solid0.5331x100.7625.461x18.466183284.273.663.4124.2360.16430
8/28.366823.60770.7871x101.1437.671x17.221197.9330.468.582.1422.6570.17140
8/38.366833.60770.7871x101.1438.103x26.899273.8511.9134.622.1422.6570.17140
6/213.302624.52170.7871x101.1438.585x19.558287.2450.978.741.3481.6730.16755
6/313.302634.52170.7871x101.1439.169x31.064407.8712.8154.941.3481.6730.16755

Typical applications

Outdoor lighting, pumps and permitted direct-burial circuits.

Design advantages

Moisture-resistant jacket for underground routing.

Selection notes

Follow burial depth and protection rules; indoor ampacity is limited to the 60°C column.

Standards to review

UL 493; NFPA 70 §340

Related cable families

TGS · VIETNAM

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