What does awg mean?

AWG (American wire gauge) American wire gauge is a standard for distinguishing wire diameters, also known as Brown & Sharpe wire gauge. This standardized wire gauge system was used in the United States starting in 1857.

The value in front of AWG (such as 24AWG, 26AWG) indicates the number of holes that the wire must pass through before forming the final diameter. The larger the value, the more holes the wire passes through. The diameter of the wire is also smaller. (Recommended learning: PHP video tutorial)

Thick wires have better physical strength and lower resistance, but the thicker the wires, the more copper is needed to make the cable, which will This makes the cable heavier, more difficult to install, and more expensive. The challenge in cable design is to use the smallest possible diameter of conductor (reducing cost and installation complexity) while maintaining the maximum capacity of the conductor at the necessary voltage and frequency.

The UK and US use wire number notation. Wire number, also known as wire gauge, is expressed in the numerical order of 0, 1, 2, 3...the larger the number, the thinner the wire.

300 years ago, rolling and extrusion had not yet been born, and wire blanks were still prepared by forging. The measuring tools at that time were also very rough. In this case, the number of drawings was used as a sign of wire thickness. Each pull adds one number, and the wire blank is number 0. Because there are many workshops and their techniques are different, many wire size standards have emerged.

Of course this is very inconvenient in trade and exchanges, but there is no "Qin Shihuang" to give them unified measurement. After 300 years of elimination, mergers and changes, some countries have changed to diameter measurement, but in the United Kingdom and the United States, the wire number representation is still used today. Commonly used today are American Wire Gauge (AWG), Birmingham Wire Gauge (BWG) and British Empire Standard Wire Gauge (SWG).

The meaning of cable

In the design of Ethernet and xDSL access networks, methods such as 24AWG, 26AWG, etc. are often encountered to express cable diameter. In fact, AWG (American Wire Gauge) is the abbreviation of the American wire standard. The AWG value is a function of the thickness of the wire (in inches). Among them, 4/0 represents 0000, 3/0 represents 000, 2/0 represents 00, and 1/0 represents 0. For example, the diameter of commonly used telephone wire is 26AWG, which is about 0.4mm.

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