You are really looking for minumum bend radius. Here are a few links: http://www.engineersedge.com/sheet_metal.htm http://www.thefabricator.com/Bending/Bending_Article.cfm?ID=52
to get the diameter from the radius you simply multiply the radius by 2 since the radius is half the diameter. d=2r where d = diameter and r = radius
The radius of the circle.
A= Area of the circle¶= Pi (About 3.14)r= Radius squared (Radius times radius)3.14 * Radius squared
Circumference = 2 * Pi * radius Radius = 23 / (2 * Pi) Radius = 3.66 inches
It depends on the cable. 0 to 5000 volts the minimum bending radius is 6 x diameter of the cable. Above 5000 volts the minimum bending radius is 8 x the diameter of the cable.
Typically, wires have a bend radius of 10 times the diameter of the wire. Measuring the inside. This is basically to prevent injury or changes in impedance at the bend. Also note that the tighter the bend can damage the insulation in coaxial or triaxial cables and cause lower dielectric strength between layers. Best to install cables where ripples don't form on the surface and moderate force is recommended. MIL-W-5088 has more information.
I believe you want to know the MINIMUM bending radius of sheet metal. The maximum bend would be 180 degrees.
Minimum Bend RadiusCable TypeFixedInstallationModerateFlexCableTracksUnshieldedCables4 x CableDiameter6 x CableDiameter8 x CableDiameterShielded Cable4 x CableDiameter8 x CableDiameter12 x CableDiameterExample:A 19/C 18 AWG flex cable - .565" diameter - has a minimum bend radius of 4.5 (.565" x 8 = 4.5).
cable radius
The radius of the curve of the inner edge of the bends shall be at least 6 times the external diameter for armoured cable.
Every bending mechanism gets governed by the simple bending equation M/I=F/y=E/R
Sharp bending, cable pinch, spyware, worm virus, sending or receiving of large email, streaming.
In a HT cable there are 2 layers of semiconductor one on the conductor and second on the XLPE insulation. As we know semiconductor behaves as conductor when temperature rises. So when the HT cable is on load its conductor temperature rises due to this the semicon layer which is on conductor behaves like conductor and as a result overall cross section area is increased. now the second semicon layer which is over XLPE on temp rise behaves as conductor and used for dessipating heat out of conductor as the cable heat due to load.
Frist putt of the main incomer HT side then Rack out the breaker and put the LOTO after that Discharge the cable Both side (HT/LT).
6x od
It is twice its radius or its circumference/pi