Cable ampacity determines the amp the wire you are using can carry safely. It is all ways best to use a voltage calculator to determine ampacity before you do a wiring job on your home are business. In the American Wire Gauge (AWG), diameters can be calculated by applying a formula. This formular can help in determining ampacity. For more information on this subject click the link provided here.
. http://www.interfacebus.com/Copper_Wire_AWG_SIze.html
