What will be the length of the wire

For torsion springs , the process is also the same but you will add the leg lengths to the result. The formulas describing these calculations are provided below. Search Entire Catalog. Basic Search Search More Fields. The current carrying capacity of a wire does not change with its length.

The longer the distance, the lower the the gauge larger diameter , to maintain the service voltage at the point of load.

The National Electrical Code NEC recommends a maximum voltage drop of 3 percent for individual household circuits known as branch circuits. Both these cases will give you longer maximum lengths. The first concept is ampacity. This is a thermal limit based on assumptions. In order to avoid having the wire get too hot for the insulation, you have to use a wire with the proper ampacity. Length doesn't matter. Insulation temperature rating of the insulation does matter.

Also the details of how the wire is routed in conduit or behind insulation, etc matter. You should never use wire above its ampacity rating unless you know what you are doing. The melting point of copper is pretty high. So you may be able to run a lot of current through bare copper wire, or wire with high temperature insulation. I don't think there are tables for that.

We can say that it is a perfect conductor. Superconductivity is also connected with levitation, which we have described in our magnetic permeability calculator. Both conductance and resistance depend on the geometrical dimensions of a wire. Our wire resistance calculator uses the following resistance formula:. Have you already computed resistance of your wire? Try our series resistor calculator and parallel resistor calculator to learn how you can calculate equivalent resistance of various electrical circuits.

You can also check out our wheatstone bridge calculator to learn how to measure unknown resistances. Materials such as copper and aluminum have low levels of resistivity, making these materials ideal for the production of electrical wire and cables.

You should remember that resistivity and therefore conductivity is affected by temperature. Find out the resistivity of the material the wire is made of at the desired temperature. Divide the length of the wire by its cross-sectional area. Multiply the result from step 3 with the resistivity of the material. The resistance of a wire is directly proportional to its length.

Hence the longer the wire, the higher its resistance since the electrons have to travel a longer distance through the wire and suffer more collisions. This makes it more difficult for the current to flow, and causes resistance. The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions as they pass through. The relationship between resistance and wire length is proportional.