Most 3/0 gauge wires with 85.00 mm2 cross-section are rated up to 600 volts. They can work in temperatures between -58°F and +221°F. Increasing gauge numbers denote logarithmically decreasing wire diameters, which is similar to many other non-metric gauging systems such as British Standard Wire Gauge (SWG). However, AWG is dissimilar to IEC 60228, the metric wire-size standard used in most parts of the world, based directly on the wire cross-section area (in square millimetres, mm²). The AWG originated in the number of drawing operations used to produce a given gauge of wire. Very fine wire (for example, 30gauge) required more passes through the drawing dies than 0gauge wire did. Manufacturers of wire formerly had proprietary wire gauge systems; the development of standardized wire gauges rationalized selection of wire for a particular purpose. You can consult the wire ampacity chart from the 1st Chapter and see that the most appropriate wire size for 80 amps is 4 AWG wire. In the 2nd Chapter, we answer the most common question about AWG wire sizes. Namely, which wire is a 30 amp wire size, 50 amp wire size, 100 amp wire size, and so on. We cover all common wires that can handle as little as 10 amps to the big ones that can handle 200 amps. This overview article about AWG gauge wires will give you all the info you need about wire sizing. You can use it as a professional electrician but it’s primarily structured in such a way that anybody can get a good understanding of AWG gauge wire.

gauge battery cables. This is usually an 8 gauge power wire that can carry more than 1000 watts of electrical power with 24-volt batteries. You can read the diameter (in inches or mm), cross-section (in mm2), and ampacity – ie. the number of amps such a wire can handle (wire gauge to amps) – for every wire. In the subchapters below, we cover each AWG gauge wire, in turn, to give you a crystal clear idea of what all these wire specifications truly mean, and their implications. American Wire Gauge ( AWG) is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous, electrically conducting wire. Dimensions of the wires are given in ASTM standard B 258. [1] The cross-sectional area of each gauge is an important factor for determining its current-carrying capacity.The ampacity of the 00 gauge wire is determined primarily by the cross-section. The complete cross-section of 2/0 gauge wire in mm2 is 67.4 mm2. 2/0 gauge wire is thus smaller than 3/0 gauge wire but bigger than 1/0 gauge wire we cover further on. You can consult the wire ampacity chart from the 1st Chapter and see that the most appropriate wire size for 90 amps is 3 AWG wire. How many amps can a 1/0 gauge wire handle? At 75°C, the 1/0 copper wire ampacity is 150 amps; essentially, the 1/0 W wire is a 150 amp wire size. At 60°C, it can handle up to 125 amps, and it can handle up to 170 amps at higher temperatures (90°C). You can consult the wire ampacity chart from the 1st Chapter and see that the most appropriate wire size for 70 amps is 4 AWG wire.

In this AWG wire gauge chart for a standard copper wire, you can find every AWG wire; from the biggest 10+ mm wires (such as 4/0 AWG and 3/0 AWG wires) to the smallest below 0.01 mm wires like 39 and 40 AWG wires. You can consult the wire ampacity chart from the 1st Chapter and see that the most appropriate wire size for 15 amps is 16 AWG wire. Let’s cover the basics of 10 gauge wire in mm and mm2. 10 AWG wire has a diameter of 2.588 mm and the diameter of 5.26 mm2.In short, 12 gauge wire can handle 25 amps; it has an ampacity of 25A at 75°C. It’s many times used as your go-to 20 amp size wire for a number of different applications.