Request A Quote PowerFlex Subscribe To Email AWG to MM2 Explained Wire Size Conversion Chart - American Wire Gauge to square millimeters The table below illustrates the conversion of AWG to MM2 (or MM2 to AWG) for easy conversion of wire gauge to mm2.

As a general rule of thumb, for every 6 gauge decrease, the wire diameter doubles, and every 3 gauge decrease doubles the cross-sectional area.

standardized wire gauge system used to note the diameter of rounded, non-ferrous electrical wiring. You can take resistance R and multiply by the number of kilometers for ohms, meters for milliohms.Toggle Sub-Nav Wire Gauge Size Chart: American Wire Gauge (AWG) to Square Millimeters (MM2)Īmerican Wire Gauge (AWG) is the U.S. If temperature is a factor in resistance measurements, take the resistance per kilometer above (we'll label that R 0), and for copper wire, resistance related to temperature is R = R 0 * (1 + 0.004 * (T - 20)) where the temperature T is in Celcius. Resistance - Although much of the time you can design circuits thinking that wires have near zero electrical resistance to current flow, there are times where you must choose wire so that resistance is not a big factor.Alternatively, if you run accross some solid telephone wire from a recent installation, it's a tad smaller but works. It is best to buy some wire specifically marketed for breadboards, most often 22 gauge. Too large a wire will bend out a hole or just not fit. Too small a wire and it falls out or makes a poor connection.

Breadboards - typically breadboard holes only handle a small range of wire gauges.

This goes for wearables also - do not sew too many power hungry LEDs with the thinnest wire that cannot handle the current draw. The size is based on handling the current while remaining cool plus providing lower resistance.

Power - if you have high current requirements in a curcuit like large motors or many LED lights, select thicker wire starting at 18 AWG and lower.

Here are some things to consider for choosing a gauge: The smaller odd sizes are not seen as often.įor a majority of projects, getting the exact gauge of wire is not a critical factor - close enough is usually fine. It is common to see the even size gauges in sizes 10 AWG and above.

Hole size for 30 awg wire