Stock Code:300252

GB cable and non - standard cable

author:kingsignal time:2017/08/22

As we all know the country for each power cable and cable resistance values are clearly defined, the difference between the national standard cable and non-standard cable is the most fundamental way to measure the cable at room temperature 20 ℃ DC resistance, measured resistance and calculated resistance value comparison, To see whether the standard requirements (cable a certain diameter, conductivity, length is not greater than a certain resistance), the resistance value is less than or equal to the national standard as the national standard, resistance value of the national standard as non-standard cable.


Due to the general consumer, factory, engineering procurement rarely sent to the quality inspection departments to detect, and secondly there is no testing equipment to measure resistance; and we share a simple distinction between GB and non-standard cable method, the detection tool only need to use To a thousand points card (hardware stores have to buy).


For everyone to calculate a 150mm2 cable conductor of the actual square of the calculation method:


150 mm2 Our conductor structure is: 30 x 2.62 (diameter).

So the actual square number of our 150 mm2 cable is about 161.65 mm2,

Calculated as follows:

First diameter ÷ 2 to get the radius, radius x radius x pi x count ≈ the actual square

Converted as follows: 2.62 ÷ 2 = 1.31, 1.31 x 1.31 x 3.14 x 30 ≈ 161.65 mm2


The above is a brief description of the causes of the heat generated during the operation of the power cable. To learn more about the power cable, please pay attention to kingsignal's official website

  1. Previous:Cable precautions
Domestic Business: 0755-26016250
Overseas Business: 0086-755-86319150-636