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Our THHN 1/0 19 1/0 gauge wire is part of our Hook Up Wire / Lead Wire line. THHN 1/0 19 is a 1/0 awg wire with a soft drawn bare copper conductor, PVC insulation, and nylon jacket. The conductor stranding is 19/.0745 with a 0.474 nominal outer diameter. Weighing approximately 372 lbs/MFT, these cables have a voltage rating of 600 volts and an ampacity of 170 at 90°C. THHN electrical wire is intended for use as general purpose wiring for installation in conduit or other recognized raceway. It may also be used for machine tool, appliance, and control circuit wiring. THHN wire is gasoline and oil resistant to 75°C and is rated to 90°C in dry locations and 75°C in wet locations.