The 6/3 UF-B cable is widely used for direct burial underground feeder installations and wet or corrosive locations. This guide covers top options that balance durability, copper quality, and outdoor performance. Each product section highlights key specifications, suitable use cases, and practical considerations to help you choose a cable that meets local electrical codes and environmental conditions.
| Product | Length | Key Feature |
|---|---|---|
| NASSAU ELECTRICAL SUPPLY 6/3 UF (100FT) | 100 ft | Direct burial with 6 AWG copper conductors |
| Nassau Electrical Supply 150′ 6/3 UF Cable | 150 ft | Direct burial; PVC jacket |
| 6/3 UF-B Wire (75ft) | 75 ft | Soft copper; outdoor direct burial suitability |
| 6/3 UF-B Wire (125ft) | 125 ft | Direct burial; moisture and light resistance |
| Wirenco 6/3 UF-B Wire (100Ft Cut) | 100 ft | Direct burial; versatile indoor/outdoor use |
Whether you’re upgrading an existing system or running new feeders, selecting the right UF-B cable means considering copper quality, jacket durability, and the ability to withstand moisture, sunlight, and soil conditions. The products below, all listed for direct earth burial, provide sturdy options that align with common American residential and commercial wiring practices. Review the specs, assess your installation length, and match the jacket and conductor construction to your project’s environmental exposure.
NASSAU Electrical Supply 6/3 UF Cable 100FT
Product: Nassau Electrical Supply 6/3 UF (Underground Feeder – Direct Earth Burial) Cable, 100 feet. Conductor: 6 AWG copper. Insulation and jacket are designed for outdoor burial and wet locations. Weight per 1,000 ft is around 478 lbs, with an outside diameter specified as 1223X361, indicating robust physical dimensions suitable for underground routing. This option is ideal for long runs between a meter base and outdoor disconnects or service panels in buried installations.
Nassau Electrical Supply 150′ 6/3 UF Cable UF-B WG
Product: Nassau Electrical Supply 150′ 6/3 UF Cable UF-B WG Wire Direct Burial CU Feeder. Features include 6 AWG copper conductors and three-conductor layout with a PVC jacket suitable for direct burial. This length is practical for longer outdoor runs from service panels to remote outlets or sub-panels while maintaining rugged outdoor performance.
Stock Wire 6/3 UF-B Cable 75ft Cut
Product: Stock Wire 6/3 UF-B Wire, 75ft cut. The cable uses annealed (soft) copper conductors and is designed for direct burial outdoors. It is rated for wet or corrosive indoor locations, and offers resistance to sunlight and moisture. This option provides flexibility for shorter runs where direct earth burial is still required, without compromising electrical integrity.
Stock Wire 6/3 UF-B Cable 100ft Cut
Product: Stock Wire 6/3 UF-B Wire, 100ft Cut. With #6 AWG annealed copper conductors, this option is suitable for direct burial outdoors, offering resistance to light and moisture. It is designed for wet or corrosive indoor locations as needed, maintaining performance in exposed environments.
Stock Wire 6/3 UF-B Cable 125ft
Product: Stock Wire 6/3 UF-B Cable, 125ft. This selection emphasizes the same robust construction with annealed copper conductors and suitability for indoor wet or corrosive locations, as well as direct earth burial outdoors. The 125-foot length supports mid-range outdoor feeder runs with durable outdoor protection against environmental factors.
Wirenco 6/3 UF-B Wire 100Ft Cut
Product: Wirenco 6/3 UF-B Wire, 100Ft Cut. Features include #6 AWG copper conductors with annealed copper and suitability for indoor wet or corrosive locations as well as direct earth burial outdoors. This option emphasizes versatility for mixed-use installations that require reliability in challenging environments.
Wirenco 6/3 UF-B Wire 75Ft Cut
Product: Wirenco 6/3 UF-B Wire, 75Ft Cut. This shorter option maintains the same core construction with annealed copper conductors for direct burial and outdoor exposure, suitable for compact or limited-distance underground runs where reliability in wet environments is essential.
Buying Guide
Key considerations when choosing 6/3 UF-B cable include conductor material quality, jacket and insulation protection, and the cable’s suitability for direct burial. Look for copper conductors (not aluminum) for better conductivity and durability in buried applications. Ensure the jacket is rated for direct earth burial (UF-B) and moisture resistance, and verify that the outer sheath can withstand soil acidity, minerals, and potential UV exposure if any surface sections are used. Measure your run length precisely, account for bends and trenches, and plan for future expansion.
Other important factors are voltage rating, permissible temperature rating, and code compliance for your region. Some installations benefit from longer runs with fewer splices; others require flexibility for routing. If you are connecting to outdoor panels or service disconnects, verify compatibility with your panel’s lug sizes and conductor size. Consider availability of cut lengths for on-site splicing and whether you need direct burial-rated insulation versus indoor/outdoor versatility. Understanding these aspects helps you select a cable that minimizes maintenance and maximizes safety.
When in doubt, consult a licensed electrician to confirm correct gauge, insulation, and burial practice for your scenario. Different regions may have subtle code differences that affect acceptable burial depths, jacket materials, and installation methods. The listed products provide dependable options across common residential and commercial 6/3 UF-B applications, giving you practical choices for direct earth burial and underground feeders.