Here, d (inch) is the diameter in inches, and d (mm) is measured in mm. The R is the ratio of wire’s diameter to that of standard Gauge (AWG#36) Step1– In this, you will calculate ratio R. To calculate the wire gauge with the help of diameter, you can use the following formula. Here n (from 36 to 0) is the AWG size, the value of n=-1 for Nr.00, n=-2 for AWG 000, n=-3 for AWG 0000. To calculate the diameter of an AWG wire, you can use the following formula.ĭ n =0.005inch*92 (36-n)/39 = 0.127mm*92 (36-n)/39 In contrast, the percentage of diameter for gauges two steps apart is (1.12293) ² ≈ 1.26098.
so, for these two, the diameter ratio is 1.12293. Now suppose A and B are two successive gauges, and their diameters are dia A and dia B. As a result, the diameter increases with the falling gauge number.
Now, as the gauge number decreases, the cross-sectional area increases. The ratio of these two diameters is 1.92. There are 40 gauges between these largest and smallest sizes, or you can say 39 steps. The diameters of these two are 0.005 inches and 0.46 inches, respectively. Image: different colored wires AWG FormulasĪccording to the American Wire Gauge (AWG) method, the highest Gauge of a wire is Nr. With this method, you can specify gauges for solid, nonferrous, and round electrically conductive wires. The AWG method is a standard method developed in the United States. Industries use the American Wire Gauge method to measure the thickness of a wire. The higher the number, the thinner the wire is. The Gauge of an electrical wire means the thickness of the wire.
#Wire gauge chart how to
How to get the same performance as copper wire However, if you’re going to power speakers with a lot of power or if you have a high-performance home stereo or car audio system, you can’t use a standard wire gauge of CCA speaker wire as you won’t get the same performance. CCA wire for everyday use and how to get the same performanceįor everyday, average listening and low or moderate power levels, it’s not really a problem and you’ll be fine. That also means you’ll need a larger CCA wire size to get the same power handling, capacity, and resistance as real copper wire. This means that when comparing two equal size wires made of aluminum and copper, you don’t get the same performance. In other words, it has 39% more resistance to the electrical current that powers your speakers. That’s because aluminum wire has 61% of the conductivity of compared to true copper wire. From the outside you’ll see the copper finish and it looks the same…but it is NOT the same wire quality! While copper wire simply a bunch of fine strands of real copper conductors, copper-clad aluminum wire uses aluminum wire cores surrounded by a very thin copper plating. It’s very common to not know what you’re getting for your money and manufacturers can be intentionally misleading.
TIP: These days if a roll of speaker wire does not say “copper” or “100% copper” on the packaging, it’s most likely CCA wire.
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