Thhn wire meaning: Specifications and Applications
THHN wire (Thermoplastic High Heat Resistant Nylon covered wire), is a type of electrical wire commonly used in homes and buildings. Thhn stranded wire are single stranded copper conductors wrapped in a PVC insulation and nylon sheath, which makes nylon wire more robust. And also makes thnn wire more heat resistant, improves the thhn copper wire‘s flame retardance, reduces friction, and reduces the risk of fire.
Thhn wire is rated at 90 degrees Celsius in a dry environment, and it has a voltage rating of 600v. The use of a nylon sheath allows the tnnh wire to be more malleable, making it easier to route through conduits, as well as the friction-resistant properties allow thhn wire to be installed with less external damage.
Thhn Wire Gauge
Thhn wire gauges are determined by the wiring installation requirements of the specific application. It represents the amount of current carrying capacity and cross-sectional area of thhn wire. Commonly used thhn wire sizes are: 10 thhn wire, 12 thhn wire, and 16 thhn wire (the numbers refer to the American Wire Gauge AWG), the larger the number, the smaller the size. .
Thhn Wire Gauge
Thhn wire gauges are determined by the wiring installation requirements of the specific application. It represents the amount of current carrying capacity and cross-sectional area of thhn wire. Commonly used thhn wire sizes are: 10 thhn wire, 12 thhn wire, and 16 thhn wire (the numbers refer to the American Wire Gauge AWG), the larger the number, the smaller the size. .
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FAQ about THHN Wire
If you need thhn wire for your project, then you can look for Central wires, Central Wires is a trustworthy manufacturer and supplier, you can buy nylon wire with the right gauge.
Thhn wire is very versatile and can be used both indoors and outdoors. Thhn cable is usually suitable for wiring motors and other electrical equipment. However, it is not advised to utilize it in wet locations.
Typically, if thhn wire is used with a copper conductor, the size required for 100 amps is either 4 AWG or 2 AWG; if an aluminium conductor is used, it is recommended to use a larger size, such as 2 AWG or 1 AWG, to ensure that 100 amps of current can be supplied.
THHN and THWN wires both use PVC insulation and nylon sheath, but they differ in that thhn wires are not as waterproof as thwn wires, thhn cannot be used underwater but thwn-2 wire can be used in wet environments. Also, their heat resistance is different, thhn wire is rated at 75 Degrees Celsius while thwn-2 wire is rated at 90 Degrees Celsius.
And there are a lot of electrical wires similar to thhn wires, some of them can be used instead of each other, in-depth understanding of the comparison of these electric wires can help us to have a clear understanding of thhn wire, such as: THHN VS XHHW Wire, THHN VS THWN Wire and XLPE VS THHN and so on, which we can get to know.
THHN wire is water-resistant but not waterproof. Thhn cable is not suitable for continuous usage in wet settings or underground burial unless it is marked as THWN (Thermoplastic Heat- and Water-resistant Nylon-coated) or THWN-2, which are approved for damp and wet locations.