Best 100 Amp Direct Burial Cables for Home Wiring
Choosing a reliable 100-amp direct burial cable is essential for secure outdoor power feeds to mobile homes, garages, and detached buildings. The following five products offer direct burial capability, 600V rating, and robust conductors designed for outdoor exposure. Each option varies by length and insulation, so you can match installation needs with performance expectations.
| Product | Length | Conductor Type | Voltage | Direct Burial |
|---|---|---|---|---|
| Relaxweex 2-2-2-4 Feeder Cable (100′) | 100 ft | Aluminum, 2-2-2-4 | 600V | Yes |
| FairySandy 75′ 1-1-1-3 SER Aluminum (100 Amp) | 75 ft | Aluminum, 1-1-1-3 | 600V | Yes |
| FairySandy 50′ 1-1-1-3 SER Aluminum (100 Amp) | 50 ft | Aluminum, 1-1-1-3 | 600V | Yes |
| Nassau Electrical Supply 100 ft 2-2-2-4 | 100 ft | Aluminum, 2-2-2-4 | 600V | Yes |
| Nassau Electrical Supply 200 ft 2-2-2-4 | 200 ft | Aluminum, 2-2-2-4 | 600V | Yes |
Relaxweex 100′ 2-2-2-4 Aluminum Direct Burial Cable
Direct Burial Design: The 2-2-2-4 aluminum direct burial wire can be buried underground without conduits, reducing installation steps and material costs. The sheath resists moisture, corrosion, and sunlight, ensuring durability in harsh environments. Temperature rating reaches up to 90°C (194°F), supporting stable performance and long service life in dry or humid conditions. Rated at 600V with a 100A capacity, this cable is suitable for connecting distribution panels in mobile homes, garages, studios, or as an outdoor main feeder to meet high-power needs.
Relaxweex 75′ 2-2-2-4 Aluminum Direct Burial Cable
Direct Burial and Durability: This 75-foot direct burial cable shares the same protective sheath and high-temperature rating as the longer version, rated for 600V and 100A. It’s engineered for outdoor installations feeding mobile homes, garages, or detached structures with a robust resistance to moisture, corrosion, and sun exposure. Ideal for outdoor main feeders and high-demand circuits.
FairySandy 75′ 1-1-1-3 SER Aluminum Cable
Three-Conductor Design: The 1-1-1-3 aluminum SER cable includes three insulated 1 AWG conductors plus a 3 AWG ground wire, designed for 600V direct burial use. This configuration is common for 100-amp residential service applications, offering reliable power delivery with a durable gray PVC jacket for outdoor installation.
FairySandy 50′ 1-1-1-3 Aluminum Direct Burial Cable
Compact Length, High Conductivity: This 50-foot roll uses AA-8000 series aluminum conductors and features three insulated 1 AWG wires plus a bare 3 AWG ground, rated for 600V. Direct burial capability makes it suitable for 100-amp service runs to mobile homes or outdoor feeders, with a rugged gray PVC jacket for weather resistance.
Nassau Electrical Supply 100 ft 2-2-2-4 URD Cable
Quadruplex URD Configuration: This 2-2-2-4 aluminum cable offers direct burial suitability for outdoor power distribution. The package indicates a 60-mil insulation thickness on a 2 AWG conductor with seven strands, delivering dependable performance for 100-amp service runs to mobile homes or exterior feeders in harsh environments.
Nassau Electrical Supply Ramapo 100 Amp Direct Burial Wire
Ramapo 600V Direct Burial: The Ramapo model is designed for 600V applications with a high ampacity (listed as 165 amps for direct burial). While labeled for 100-amp use in many residential contexts, it maintains robust insulation and conductor integrity for outdoor service cables, suitable for longer feeders and more demanding outdoor electrical layouts.
Relaxweex 50′ 2-2-2-4 Aluminum Direct Burial Cable
Outdoor Durability and Performance: The 50-foot direct burial variant shares the same direct burial design, moisture and sun resistance, and a 600V rating with 100A capacity. It’s suited for shorter feeder runs to mobile homes, detached garages, or outdoor panels needing a durable, weatherproof power feed.
Nassau Electrical Supply 200′ 2-2-2-4 URD Cable
Long-Distance Direct Burial: A 200-foot option in the 2-2-2-4 family supports longer outdoor feeder installations. It maintains a 600V rating, 100A capacity, and weather-resistant insulation suitable for exterior service runs to detached buildings or multi-outlet outdoor circuits.
Buying Guide: Key Considerations for 100 Amp Direct Burial Cables
- Voltage rating and ampacity: Ensure the cable is rated for 600V and supports at least 100A for main feeders or service entrances.
- Conductor material: Aluminum offers lighter weight and cost benefits; copper is more conductive but heavier and pricier.
- Direct burial suitability: Verify the jacket and insulation are designed for underground use and exposure to moisture, soil acidity, and UV light.
- Conductor configuration: Common options include 2-2-2-4, 1-1-1-3, or Ramapo/URD triplex/quadruplicate designs. Match to service requirements and local codes.
- Length and routing: Choose lengths that minimize splices and match the distance between panels and feeders. Plan for future expansion where possible.
- UL/CSA certifications and code compliance: Confirm compatibility with local electrical codes and any utility service requirements.
- Jacket material and jacket color: Gray PVC jackets are typical for outdoor use; consider UV resistance and chemical exposure.
- Installation considerations: Direct burial may require minimum trench depth, moisture protection, and adherence to local regulations; some installations may still benefit from conduit in rocky soil.
- Maintenance and inspection: Periodic checks for moisture ingress, cracking, or discoloration help ensure long-term reliability.