The opposite is true when the temperature drops, making the wire more rigid. The higher the temperature, the more the wire or cable will bend. Stranded wire typically bends more than a single solid conductor. For example, aluminum has a smaller bend radius than copper because it is more malleable. Make/Metalīend radius changes based on the type of metal used and how the conductors are fashioned. Both controlled and uncontrolled factors may impact how the wire reacts in its environment. Wire size is only one of several variables used to determine bend radius. Pipes, hoses, and other products have similar safety measures to prevent damage. Minimum Bend Radius = Outside Diameter of the cable (O.D.) x Cable Multiplier (based on type of wire)īend radius isn’t limited to wire and cable installs, either. Once you know the outside diameter, you can use the formula below to find the minimum bend radius. Thicker cables have a larger minimum bend radius than smaller ones, and more conductors bend less than a single conductor. Typically, this information is on the manufacturer’s spec sheet and varies based on cable type, insulation, and conductor count. To determine the bend radius, you must know the OVERALL cable diameter. The bend radius is the radius of the circular curve made (radius) when you bend a wire back onto itself. Simply put, a minimum bend radius is how tightly you can bend a wire or cable without damaging it or compromising its mechanical and electrical performance.
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