At West Florida Components, we get asked very often about wire bending radius. It is important to have guidelines when working with wire or cable in your projects, particularly projects that involve curves, ductwork and buildings. There are a few rules of thumb that come into play when you think about the bending radius of wire and cable. Following these rules will ensure that your wire and cable projects go off without a hitch!
Here is a chart to use: http://www.westfloridacomponents.com/wire-bending-radius.html