Copper Wire Table: AWG to Metric







Ampacity Rating 



































































































































































Notes
* Stranded wire sizes. Solid wire sizes are shown in brackets.
Copper wire resistance is 10.37 ohms per circular mil per foot.
Aluminum wire resistance is 16.06 ohms per circular mil per foot.
To convert feet to meters or ohms per foot to ohms per meter, divide by .3048.
MCM is thousand circular mils. Circular mils is a measurement of area:
1 CM = .000001 square inch.
1 MCM = .001 square inch.
This chart has been compiled from several sources. Some data such as ohms per meter, ohms per foot and nominal diameter in mm have been calculated from equivalents and constants.
Home Dunlite Renewable Energy Emergency Preparedness Pearen History Modeland History