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- Comparison of THHN and THWN-2 Wires
Attribute THHN THWN-2 Sources Full Form Thermoplastic High Heat-resistant Nylon-coated Thermoplastic Heat and Water-resistant Nylon-coated 1 2 3 Temp. Rating (Dry) 90°C (194°F) 90°C (194°F) 1 2 3 Temp. Rating (Wet) 75°C (167°F) 90°C (194°F) 1 2 3 Water Resistance No Yes 1 2 3 Usage Dry locations, conduit, raceways Wet and dry locations, conduit, raceways 1 2 3 THHN is suitable for dry locations with high heat resistance, while THWN-2 is designed for both wet and dry conditions with superior water resistance. When choosing between the two, consider the environmental conditions and specific requirements of your project123.
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THHN Vs. THWN: Which Is The Better Building Wire?