Wire cross-sectional area test and requirements– ChangZhou Sun-Rise Electronic Co.,Ltd.

AWG (American wire gauge) is a standard for distinguishing wire diameters, also known as Brown & Sharpe wire gauge. This standardized wire gauge system has been in use in the United States since 1857. In addition, AWG is also the abbreviation of Arrayed Waveguide Grating.

The standard for distinguishing wire diameters in the United States, also known as B&S thread (ie Brown & Sharps thread), copper wire diameter is usually measured in AWG (American Wire Gauge). The value in front of AWG (such as 24AWG, 26AWG) indicates the number of holes that the wire passes through before forming the final diameter. The larger the value, the more holes the wire passes through, and the smaller the diameter of the wire.Thicker wires have better physical strength and lower resistance, but the thicker the wires, the more copper is needed to make the cable, which makes the cable heavier, harder to install, and more expensive. The challenge with cable design is to use Wires with the smallest diameter possible (to reduce cost and installation complexity), while ensuring the maximum capacity of the wires under the necessary voltage and frequency. In our cable industry, there are special specifications for conductors in the UL758 specification The detailed description of the standard, its standard is the AWG mentioned above, which is the American Wire Guage, which is the standard referred to by various cable companies. It divides the conductor into single copper (single copper conductor) and twisted copper (multiple copper conductors) Stranded copper conductor), single copper is divided into specifications according to diameter; twisted copper is divided into specifications according to cross-sectional area, as shown in the following table:

Calculation method of cross-sectional area of copper wire

s: cross-sectional area of single strand core S: cross-sectional area of wire D: diameter r: radius π: pi = 3.1415

1. Cross-sectional area of single strand core s = π(D/2)⊃2;=πr⊃2;=3.1415×r⊃2;

2. Cross-sectional area of wire = cross-sectional area of single-strand core × number of core strands

Extract a core as follows

2.3 Then the cross-sectional area of the wire core is

s = π(D/2)⊃2;=3.1415×(0.173/2)⊃2;=3.1415×0.0865×0.0865=0.0235mm²

2.4 The cross-sectional area of the wire is

S=s×Number of core strands=0.0235mm²×34 (shares)=0.7991mm²＜0.824mm²

3. According to the above formula, select the qualified wire with cross-sectional area > 0.824mm²

Sun-Rise Electronic / Calukii US Store

August 29th, 2023