Best 4/0 Aluminum THHN Cables and Related Service Cables for Electrical Projects
When selecting large-diameter aluminum conductors for high-amps installations, 4/0 aluminum THHN and related service entrance cables are common choices. This guide highlights five relevant products, summarizing their construction, ampacity, and suitable applications. Each entry includes a direct Amazon link, an image, and key features to help compare options for feeders, underground residential distribution (URD), and service entrances. Use the Buying Guide to weigh factors like insulation type, conductor size, and installation environment.
Summary of chosen products:
| Product | Conductor Size / Type | Voltage / Construction | Notable Feature |
|---|---|---|---|
| Nassau Electrical Supply 50′ 4/0-4/0-2/0-4 Aluminum Mobile Home Feeder Cable | 4/0-4/0-2/0-4 Aluminum | 600V, Mobile Home Feeder | Grounding Conductor 4 AWG; 200A ampacity |
| Wirenco 4/0 AWG XHHW-2 Aluminum Building Wire (50 FT) | 4/0 AWG XHHW-2 | UL 44, ASTM B800/B801 | Ampacity 205A @ 90°C; compact stranded |
| Nassau Electrical Supply 100′ Wake Forest Quadruplex URD Cable | 4/0-4/0-4/0-2/0 | 600V URD, Underground | Underground direct burial; neutral 2/0 |
| Nassau Electrical Supply 50′ 4/0-4/0-4/0-2/0 SER Aluminum Service Entrance Cable | 4/0-4/0-4/0-2/0 | 600V, SER | Ground 2/0; aluminum conductor |
| Wirenco 4/0-4/0-4/0-2/0 SER Aluminum Service Entrance Cable (20FT) | 4/0-4/0-4/0-2/0 SER | Outdoor service entrance | Three #4/0 and one #2/0 ground; 1.496″ OD |
Nassau Electrical Supply 50′ 4/0-4/0-2/0-4 Aluminum Mobile Home Feeder Cable 600V
The Nassau feeder cable uses a 4/0-4/0-2/0-4 aluminum gauge set, designed for 600V service with a dedicated grounding conductor of 4 AWG. Its ampacity is listed at 200 amps, making it suitable for mobile home feeders and similar installations where robust aluminum conductors are required. The construction supports durable outdoor and underground applications with standardized insulation for reliability in varying climates.
Wirenco 4/0 AWG XHHW-2 Aluminum Building Wire (50 FT)
This Wirenco XHHW-2 aluminum building wire is specified for 4/0 AWG with UL 44 and ASTM B800/B801 certification, indicating strong compliance with standard electrical codes. The wire is compact and stranded, enabling easier pulling through conduits. The listed ampacity reaches 205 amps at 90°C, suitable for feeders or branch conductor runs that demand higher current capacity in a single cable.
Nassau Electrical Supply 100′ Wake Forest Quadruplex URD Cable
The Wake Forest URD cable features a quadruplex arrangement with 4/0 conductors and a 2/0 neutral, intended for underground distribution. Its 600V rating and URD designation indicate suitability for direct burial in residential underground installations, often used for service feeders and feeder runs from the street to the transformer or meter base.
Nassau Electrical Supply 50′ 4/0-4/0-4/0-2/0 SER Aluminum Service Entrance Cable 600V
The SER cable listed here uses three 4/0 conductors plus a 2/0 ground, all aluminum, with a 600V rating. SER cables are typically used for service entrance conduits, connecting the meter base to the distribution panel. The configuration supports efficient service entry for larger homes or light commercial builds where high-current capability is needed.
Wirenco 4/0-4/0-4/0-2/0 SER Aluminum Service Entrance (20FT)
This Wirenco 4/0-4/0-4/0-2/0 SER cable is designed to carry power from the service drop to the meter base and then to the distribution panel. It includes three #4/0 AWG conductors with a #2/0 AWG ground, with an outside diameter around 1.496 inches. The SER construction supports robust, weather-resistant service entrance runs in residential installations.
SER 4/0-4/0-4/0-4/0-2/0 Aluminum Service Entrance (50′)
This generic SER service entrance cable presents a 50-foot length with four 4/0 conductors and a 2/0 ground. Rated for 600V and using PVC/XHHW insulation, it is suitable for longer service runs in both residential and light commercial contexts where high current capacity is required and direct burial is anticipated.
Buying Guide
Key considerations when selecting 4/0 aluminum THHN and related SER/URD cables include conductor material, insulation type, ampacity, and installation environment. Aluminum conductors offer cost and weight advantages but require attention to corrosion resistance and termination compatibility. Common insulation and jacket types—such as XHHW-2 for dry and wet environments, PVC for service entrance, and URD insulation for direct burial—impact pullability, moisture resistance, and temperature ratings. Ampacity varies with insulation and temperature rating; always verify code-compliant ampacity for your specific installation and temperature conditions. For URD and underground runs, ensure direct burial suitability and protection from physical damage. When sizing multiple parallel conductors (as in SER configurations), check that the neutral and grounds are correctly sized to maintain system balance and safety. Consider future load growth, panel compatibility, and length to minimize voltage drop over longer runs. Always follow local electrical codes and consult product specs for installation guidance.