you can try to strip the cable gently and check it with a micrometer if you have it, although I recognize cables ranging from 0.5mm to a few mm if they are not marked by eye. the method with a micrometer will not give 100% certainty because it can always happen that you will slightly bend the cable, but the margin of error will be rather small, let`s say that if the cable is 1 mm and comes out 0.8 mm, then the matter is obvious
It is easy to notice and measure differences with larger cross-sections, e.g.: 4mm² is 2.256mm diameter, 2.5mm² is 1.78mm 1.5 mm² is 1.38 mm 1 mm² is 1.12 mm 0.75mm² is 0.97mm 0.5 mm² is 0.80 mm As you can see, with a cross-section below 1 mm², it is difficult to measure the diameter and be sure because if the measurement result is 0.85 mm, you are not sure what the cross-section is. But with larger ones, you can easily measure the diameters and you won`t be wrong.
I am rather interested in wires with diameters above 1.5 mm2. Let`s assume I measure the diameter of the cable (with a caliper, we don`t measure it so precisely at work that we need to use a micrometer) and it is 2.2mm2, then you can guess that it is a 2.5mm2 cable. And for larger diameters, e.g. 8, 10, 35, 50, 70mm2, etc. Is there any formula for this? Is it intuitive?
Diameter in square meters? You can use a caliper to measure the regular diameter (in mm) and convert it to cross-sectional area using formulas known from primary school.
The cross-section of the wire is in mm² and its formula is pi • r². You measure the diameter of the wire, which is in mm, not the cross-section. If the diameter you measure is, for example, 2.2 mm, then you calculate the cross-section: r=1/2 d, i.e. r=1/2 x 2.2 mm= 1.1 mm. Cross-section = 3.14 In the previous post I wrote what diameter corresponds to the cross-section of 4, 2.5, 1.5, 1, 0.75 and 0.5mm²
Thanks for the answer, and is it the same in the case of thicker cables, e.g. a cable diameter of 70 mm, would it mean that the cross-section would be 3845.5 mm2? There is no such thing??!!
I don`t know, but I haven`t come across a 7cm cable (it`s a power cable). The formula for the area of a circle (i.e. cross-section) is P=pi x r² and you will not change it. You did the calculation correctly, so maybe the diameter is not 70 mm, but either less or more.
The discussion focuses on techniques for identifying the cross-section of electrical cables through visual inspection and measurement. Users suggest using tools like micrometers and calipers to measure the diameter of the cable, which can then be converted to cross-sectional area using the formula for the area of a circle (A = πr²). Specific diameters corresponding to common cross-sectional areas (e.g., 0.5 mm² to 4 mm²) are provided, highlighting that larger diameters are easier to measure accurately. The conversation also touches on the challenges of measuring smaller cross-sections and the potential for error in measurements. A user inquires about the applicability of these methods for thicker cables, and the group confirms that the same principles apply, although they express skepticism about the existence of extremely large diameters like 70 mm. Summary generated by the language model.
You can use a caliper to measure the regular diameter (in mm) and convert it to cross-sectional area using formulas known from primary school.
