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Thhn wire1/16/2024 ![]() ![]() The middle letters (HH) indicate it's high heat resistance, suitable for high-temperature use up to 90 degrees Celsius. The first letter T shows the insulation is a thermoplastic material made from polyvinyl chloride (PVC). /rebates/2fpd2fSouthwire-SIMpull-3-Power-Cord2f1000920800&252fpd252fSouthwire-SIMpull-3-Power-Cord252f100092080026tc3dbing-&idlowes&nameLowe27s&ra1. For indoor and outdoor applications where longevity is valued, THHN wire provides the peace of mind that contractors and homeowners demand. THHN wire has grown in popularity since it is a cost effective alternative compared to other types of building wire. It is also used as a conductor in NM-B, UF-B, SER, SEU and MC. ![]() For end users, this means greater flexibility for applications like push-button stations, fire alarm controls, and temperature control systems. (By-the-Foot) 6 Black Stranded CU SIMpull THHN Wire Southwire's THHN and THWN-2 is a multi-purpose Southwire's THHN and THWN-2 is a multi-purpose building wire used in conduit and cable trays for service, feeders and branch circuits in commercial and industrial applications. These characteristics make THHN wire an excellent choice for controlling outdoor factors that would otherwise alter the performance of wire cable. The wires inside the THHN handle high heat temperatures, making them suitable for most applications in buildings. ![]() The exterior easily strips for cutting and connecting the wiring. THWN is essentially the same as THHN, but can withstand higher temperatures in both dry and wet. What Is THHN Wire THHN cable has a thermoplastic insulation constructed of polyethylene (PE) and polyvinyl chloride (PVC). The different letters in THHN wire denote particular properties of the cable:įor wire also rated as THWN: Thermoplastic Heat and Water Resistant Nylon Coated. THHN is a thermoplastic, high-heat resistant, nylon coated wire. Designed to withstand heat up to 194 degrees Fahrenheit, this resistance drops to 167 degrees if oil exposure occurs. See 110.14(C), 240.4(D) and 310.15(B) for other limitations where applicable THHN Wire Properties THHN wire is the original version of the dual-rated cable. *Ampacity of conductors are based on the National Electrical Code (NFPA 70) Table 310.15(B)(16). ![]()
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