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American wire gauge (AWG) size calculator and chart. * @ 68°F or 20°C. ** Diameter and cross sectional area do not include the insulation. *** Results may change with real wires: different resistivity of material and number of strands in wire. Voltage drop calculator .
The following chart is a guideline of ampacity or copper wire current carrying capacity following the Handbook of Electronic Tables and Formulas for American Wire Gauge. As you might guess, the rated ampacities are just a rule of thumb .
American Wire Gauge “AWG” is one of the important and standard tools in the US NEC (National Electrical Codes) used to sizing different cables and wires for multiple applications. Similarly to the SWG (Standard Wire Gauge) used in the UK, AWG is used to determine the ampacity of copper and aluminum wires for electrical wiring installations etc.
A wire gauge chart lists the American Wire Gauge (AWG) sizes for electrical cables and converts them to inches and millimeters. Wire properties such as cross-sectional area, ampacity and resistance are also listed.
A Wire Gauge consists of a list of popular and commonly used AWG size of wires in a small circular disc. To determine the correct gauge size, remove the insulation around the main conductor and insert the wire in the slot (not the hole) of the wire gauge.
Here is the full AWG wire size chart (including wire ampacity chart): 4/0 or 0000 AWG gauge wire is the thickest wire used in the standard AWG (ie. Brown & Sharpe wire gauge) system. It is one of the two AWG wires that have a 10+ mm diameter (4/0 AWG wire to mm equals 11.684 mm).
American Wire Gauge (AWG) is the standard system used in the U.S. to measure the diameter of electrical wires. In the AWG system, numbers represent wire sizes. The system might seem counterintuitive at first: the higher the gauge number, the thinner the wire.