Best Direct Burial 12/2 With Ground Cables for Outdoor Wiring
Direct burial 12/2 with ground cables are designed to run underground without conduit to power outdoor lights, pumps, or outbuildings. This guide highlights five reliable options and provides practical buying considerations, from insulation and UV resistance to conductor type and voltage ratings. Each product below is suited for residential exterior wiring projects where moisture resistance and long-term durability matter.
| Product | Length | Brand | Key Advantage |
|---|---|---|---|
| Southwire UF-B Underground Feeder Cable, 12/2 AWG, 250 ft | 250 ft | Southwire | Long run with ground option; versatile for buried feeders |
| Southwire Outdoor Wire, 12/2WG UF 100 Ft Coil | 100 ft | Southwire | Outdoor suitability and UL listed |
| FIRMERST 12/2 UF Wire Outdoor Direct Burial Underground Feeder Cable 100ft | 100 ft | FIRMERST | ETL-listed direct burial, robust PVC jacket |
| FIRMERST 12/2 UF Wire Outdoor Direct Burial Underground Feeder Cable 150ft | 150 ft | FIRMERST | Solid copper with ground, strong moisture resistance |
| Southwire 12/2 Gray Solid CU UF-B W/G Wire 25 ft | 25 ft | Southwire | Short-run, flexible option for smaller outdoor projects |
Southwire UF-B Underground Feeder Cable, 12/2 AWG, 250 ft
The Southwire UF-B 12/2 underground feeder cable uses annealed copper conductors with PVC insulation and a color-coded nylon jacket. Available in configurations with two or three conductors and with or without a ground wire, this cable is designed for direct burial in residential outdoor wiring. The robust jacket resists moisture, enabling safe underground runs to lighting, outlets, or exterior equipment. This option is ideal for long runs when a single spool covers the project’s needs, reducing joint points and installation time.
Southwire Outdoor Wire, 12/2WG UF 100 Ft Coil
This UF insulated cable is coated with a sunlight-resistant jacket that is flame retardant and resistant to moisture and corrosion. It’s primarily used for direct burial applications, including outdoor feeders to lighting or exposed wiring in damp or dry locations. UL listing confirms compliance with safety standards, making it a dependable choice for outdoor residential installations where direct burial is permitted without conduit.
FIRMERST 12/2 UF Wire Outdoor Direct Burial Underground Feeder Cable 100ft
FIRMERST’s 12/2 UF-B cable features a solid copper conductor with a ground wire and a PVC jacket designed for direct burial. The 100-foot length supports typical outdoor runs for lighting, pumps, or outdoor outlets. ETL-listed for direct burial and suitable for both dry and wet locations, this cable combines durable insulation with UV resistance for long-term outdoor reliability. It is a practical choice when length, durability, and compliance are priorities.
FIRMERST 12/2 UF Wire Outdoor Direct Burial Underground Feeder Cable 150ft
This FIRMERST model provides a longer 150-foot run with a solid copper conductor and a ground wire. The 12/2 gauge is suitable for standard residential loads, including outdoor lighting and equipment. Its ETL-listed direct burial capability, combined with a corrosion- and UV-resistant PVC jacket, makes it a reliable option for demanding outdoor environments where longer cable runs are needed.
Southwire 13055921 25 ft. 12/2 Gray Solid CU UF-B W/G Wire
This shorter 25-foot option offers practical flexibility for smaller outdoor projects or tight spaces where a longer run isn’t necessary. The cable features solid copper conductors with a ground wire and a PVC jacket, making it suitable for direct burial in outdoor locations. It remains UL listed and appropriate for humid or damp environments, providing dependable performance in residential settings.
Buying Guide: Direct Burial 12/2 With Ground Cables
Conductor Type and Ground Wire
Most direct burial 12/2 cables include copper conductors with an integrated ground wire. A grounded configuration helps improve safety by providing a path to ground for fault currents. Solid copper conductors are generally stiffer but offer stable conductivity, while stranded copper provides flexibility for pulling through trenches or around obstacles.
Insulation and Jacket Materials
Look for a PVC insulation and jacket designed for direct burial. The jacket should resist moisture, UV exposure, and chemical contact. A color-coded jacket helps distinguish conductors and ensures correct wiring during installation. Some models add an additional weatherproof or flame-retardant outer layer for added protection.
Direct Burial Certification and Usage
Choose cables ETL-listed or UL-listed for direct burial to meet electrical code requirements. Verify that the product supports the intended location (dry, damp, or wet) and voltage rating (commonly 600 volts for outdoor feeders). Note that some cables are recommended for outdoor lighting and other exterior loads, while others are intended for feeders to remote structures.
Length, Splice Considerations, and Availability
Lengths range from 25 ft to 250 ft in the options above. Longer runs reduce the number of splices but may require careful trenching and protection against damage. Consider coil or spool form versus fixed lengths based on your project footprint. Availability and delivery times can affect project planning, especially for longer runs.
Durability and Environmental Resistance
Moisture resistance, UV stability, and flame retardancy contribute to cable longevity in outdoor settings. UV-resistant jackets and robust insulation are important for outdoor exposure. In corrosive soils or areas with chemical exposure, ensuring proper burial depth and protective measures is essential.
Electrical Code Compliance and Professional Considerations
Always check local electrical codes and, if needed, consult a licensed electrician. Direct burial installations typically require appropriate burial depth, protective conduit in some zones, and proper terminations at outdoor fixtures or panels. Safety and code compliance should guide product selection and installation practices.