01
Application
THHN and THWN Wire is the model of America standard. The biggest difference between both model is the working temperature, They both are suitable for supplying power for home lighting. THHN wire is suitable for 75℃, THWN Wire is 90℃.
Construction
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1. Copper Or Aluminum Conductor |
2. PVC insulation(Colour as request) | |
3. Transparent Nylon Jacket |
Specifications

AWG or kcmil | Strand | Nominal Insulation thickness | Nominal Jacket thickness | Nominal Overall Diameter | Cable weight | ||||
Inch/mm | Inch/mm | Inch/mm | Lbs/kft | kg/km | |||||
14 | 1 | 0.015 | 0.38 | 0.004 | 0.1 | 0.11 | 2.78 | 15.4 | 21 |
12 | 1 | 0.015 | 0.38 | 0.004 | 0.1 | 0.12 | 3.06 | 23.1 | 33 |
10 | 1 | 0.02 | 0.51 | 0.004 | 0.1 | 0.15 | 3.82 | 37.2 | 53 |
14 | 19 | 0.015 | 0.38 | 0.004 | 0.1 | 0.11 | 2.78 | 16.3 | 23.5 |
12 | 19 | 0.015 | 0.38 | 0.004 | 0.1 | 0.13 | 3.31 | 24.3 | 35 |
10 | 19 | 0.02 | 0.51 | 0.004 | 0.1 | 0.17 | 4.33 | 39.2 | 57 |
8 | 19 | 0.03 | 0.76 | 0.005 | 0.13 | 0.22 | 5.58 | 63.1 | 93 |
6 | 19 | 0.03 | 0.76 | 0.005 | 0.13 | 0.26 | 6.62 | 98.5 | 146 |
4 | 19 | 0.04 | 1.01 | 0.006 | 0.15 | 0.33 | 8.37 | 157.6 | 233 |
3 | 19 | 0.04 | 1.01 | 0.006 | 0.15 | 0.36 | 9.15 | 193.8 | 286 |
2 | 19 | 0.04 | 1.01 | 0.006 | 0.15 | 0.39 | 9.92 | 240.2 | 356 |
1 | 19 | 0.05 | 1.27 | 0.007 | 0.18 | 0.43 | 10.82 | 300.5 | 445 |
1/0 | 19 | 0.05 | 1.27 | 0.007 | 0.18 | 0.47 | 11.98 | 376.6 | 564 |
2/0 | 19 | 0.05 | 1.27 | 0.007 | 0.18 | 0.52 | 13.25 | 467.8 | 692 |
3/0 | 19 | 0.05 | 1.27 | 0.007 | 0.18 | 0.57 | 14.44 | 581.4 | 863 |
4/0 | 19 | 0.05 | 1.27 | 0.007 | 0.18 | 0.64 | 16.28 | 724.3 | 1079 |
250 | 37 | 0.06 | 1.52 | 0.008 | 0.2 | 0.69 | 17.55 | 856 | 1275 |
300 | 37 | 0.06 | 1.52 | 0.008 | 0.2 | 0.76 | 19.32 | 1023 | 1523 |
350 | 37 | 0.06 | 1.52 | 0.008 | 0.2 | 0.79 | 20.09 | 1195 | 1775 |
400 | 37 | 0.06 | 1.52 | 0.008 | 0.2 | 0.85 | 21.53 | 1346 | 2010 |
500 | 37 | 0.06 | 1.52 | 0.008 | 0.2 | 0.94 | 23.85 | 1669 | 2486 |
You must to know when use THHN Wire
In selecting the appropriate nylon thread size, it is essential to take into account a number of factors.
The current load is as follows: The size of the nylon wire should be selected in accordance with the current load that is to be transmitted, with due consideration given to the fact that the wire must be capable of carrying the requisite current without exceeding its capacity.
The voltage level is a further factor to be taken into consideration. The size of the nylon wire should be selected in accordance with the rated voltage of the electrical system, in order to guarantee that the wire is capable of withstanding the voltage of the system without breakdown.
The ambient temperature must also be taken into account. It is essential to consider the ambient temperature at the location where the wire is situated and select a nylon wire size that is capable of functioning optimally within that temperature range.
The method of installation is also a factor to be considered. The appropriate size of nylon wire should be selected according to the laying method employed, which may include air laying, buried laying, pipe laying, and so forth.
The bending radius is a crucial factor to be considered. It is essential to consider the bending radius requirements of the nylon wire during the laying process and select a size that can meet these requirements.
It is imperative to adhere to the pertinent national or regional standards and specifications when selecting the appropriate nylon thread size. This entails a comprehensive consideration of the aforementioned factors, with the objective of determining the optimal size in accordance with the specific usage requirements and environmental conditions. In the event of uncertainty, it is advisable to seek the expertise of a professional electrical engineer or electrician.