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

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

Allowable Ampacity for 350 MCM THHN/THWN-2 Aluminum Cable PVC Insulation Nylon Jacket 600V at 90°C: 280 Amps

Overview:

This 350 MCM THHN/THWN-2 aluminum cable is built for high-capacity power distribution in both dry and wet locations. It features durable PVC insulation and a clear nylon jacket that enhances protection against abrasion, moisture, and sunlight. Rated for 600 volts and up to 280 amps at 90°C, it’s installed in conduit or raceway for residential, commercial, and industrial applications.

Also Known As:

350 thhn cable, 350 thwn cable,  350 mcm thhn cable, 350 mcm thwn cable, 350 thhn aluminum, 350 pvc insulated, 350 pvc insulated wire, 350 pvc insulated aluminium wire, 350 pvc sheathed cable, 350 pvc flexible cable, thhn wire, thhn aluminum wire, thhn aluminum wire, 350 mcm aluminum wire, 350 kcmil thhn aluminum

Why Choose 350 MCM THHN/THWN-2 Aluminum Wire?

350 MCM THHN/THWN-2 aluminum wire is a reliable, NEC-compliant solution for 280-amp power systems. Lighter and more affordable than copper, it’s a great choice for long feeder runs, large subpanels, and industrial installations that require high current capacity and easy handling.

Applications:

This 350 MCM aluminum THHN/THWN-2 wire supports up to 280 amps at 90°C, making it ideal for:

• Main service entrance and high-capacity feeders

• Large commercial and industrial panel connections

• Conduit and raceway installations in wet or dry environments

• HVAC systems, large motors, and machinery

• Long-distance power distribution with minimal power loss

• AC wiring in large-scale solar installations

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: 350

• Stranding: 35

• Conductor Diameter Inches: 0.614

• Insulation Thickness Inches: 0.65

• Jacket Thickness Inches: 0.008

• O.D. Inches:  0.752

• New Weight lb/1000FT: 401 lbs

• Ampacity at 90°C: 280 Amps