250 MCM THHN/THWN-2 Aluminum Cable PVC Insulation Nylon Jacket 600V

250 MCM THHN THWN-2 Aluminum Cable PVC Insulation Nylon Jacket 600V 

Allowable Ampacity for 250 MCM THHN/THWN-2 Aluminum Cable PVC Insulation Nylon Jacket 600V at 90°C: 230 Amps

Overview:

This 250 MCM THHN/THWN-2 aluminum wire is designed for heavy-duty power distribution in both wet and dry environments. With tough PVC insulation and a clear nylon jacket, it handles up to 600 volts and supports 230 amps at 90°C. Installed in conduit or raceway, it’s ideal for residential service entrances, commercial feeders, and industrial circuits.

Also Known As:

250 thhn cable, 250 thwn cable, 250 mcm thhn cable, 250 mcm thwn cable, 250 thhn aluminum, 250 pvc insulated, 250 pvc insulated wire, 250 pvc insulated aluminium wire, 250 pvc sheathed cable, 250 pvc flexible cable, 250 aluminum wire, 250 kcmil aluminum thhn, 250 mcm aluminum building wire

Why Choose 250 MCM THHN/THWN-2 Aluminum Wire?

250 MCM aluminum wire offers a high-capacity, cost-efficient alternative to copper for 230-amp service. It meets NEC standards, reduces weight during installation, and is ideal for long conduit runs, panel connections, and large-scale feeders.

Applications:

This 250 MCM aluminum THHN/THWN-2 wire supports up to 230 amps at 90°C, making it suitable for:

• Main service entrance and large feeder circuits

• High-load panelboard connections in commercial settings

• Conduit and raceway systems in wet or dry locations

• Industrial machinery, HVAC systems, and large motor loads

• Power distribution across commercial and industrial buildings

Standards:

• UL standard 83, 1685, CUL

• CSA C22.2 No. 75

• 1/0 & larger are rated for CT use

• Requirements of the National Electrical Code

• NEMA WC-70 construction requirements

• ASTM standards B 800, B 801, B836

• Federal Specification AA-59544

• Sunlight resistant

• RoHS Compliant

Construction

Conductors:

THHN / THWN-2 / T90 conductor is a soft drawn bare 8000 series aluminum, with Class B stranding per ASTM. Stranded conductors reduce power loss and are also easier to use in applications where flexibility is vital. 

Insulation:

THHN / THWN-2 / T90 has abrasion, heat, moisture, oil, and acid alkaline resistant polyvinyl chloride (PVC) insulation.

Jacket:

THHN / THWN-2 / T90 cables have a clear abrasion, heat, sunlight, moisture resistant, and low coefficient of friction nylon jacket. Standard stock colors include: black, red, blue, white, brown, orange, yellow, gray, purple, and green.

Specifications:

• Size AWG: 250

• Stranding: 35

• Conductor Diameter Inches: 0.52

• Insulation Thickness Inches: 0.65

• Jacket Thickness Inches: 0.008

• O.D. Inches:  0.656

• New Weight lb/1000FT: 296 lbs

• Ampacity at 90°C: 230 Amps