If it is fixed properly in the slot (not hole), this is the exact gauge size (printed on that specific slot) of the wire. To use the wire gauge tool to find the suitable gauge size for a particular wire, simply remove the outer insulation and insert the wire conductor in the wire gauge slot one by one. It is a small circular shaped disc where different but common numbers are printed on it in accordance with the specific slots and holes. If you are on the job site and need to know the wire size gauge for the particular load, one of the quick solutions is to use the handy device known as wire gauge tool. AWG/SWG to mm/mm 2, inch/inch 2 & kcmil Calculator & Conversion.Standard Wire Gauge “SWG” Calculator – SWG Size Chart & Table.American Wire Gauge “AWG” Calculator – AWG Size Chart & Table.Good to know: The American Wire Gauge (AWG) is also known as B and S Gauge (Brown & Sharpe Gauge). the higher the AWG size, the lower the ampacity and vise versa. In short, the ampacity is inversely proportional to the size of AWG integers (from 0000AWG to 40AWG) e.g. For example, the 14AWG size is a suitable wire for a 15Amp circuit breaker, whereas the 8AWG size is most appropriate for 40Amps of circuit breakers and load points. One thing should be noted about the AWG that the larger the integer, the smaller the thickness and diameter of wire. One of the most important roles of American Wire Gauge is to measure the current carrying capacity in Amps of wire (aka Wire Ampacity = The amount of maximum current that a conductor can carry continuously without exceeding its temperature rating. The AWG is used to exactly measure the diameter of a particular conductor (such as solid, stranded, round and non-ferrous (alloys or metals that do not contain any appreciable amounts of iron) materials e.g. That’s where the AWG (American Wire Gauge) has played an important role since 1857. It is impossible to measure the exact amount of resistance in ohms of a wire having specific length for precise wire diameter.

NEC Wire Size Table 310.15(B)(16) (Previously Table 310.16) & Chart based on AWG.Wire Size Ampacity & Breaker Size Charts Based on AWG.Calculation of Wire Diameter in mm & Inch, Cross Sectional Area in mm2, inch2 & kcmil & Resistance from it AWG Size.

Why are Wire Gauge Charts & Tables Important?.

Mcm wire size chart