How Do You Calculate Wire Temperature Resistance When Power Is Known?
Metal wire rods, strands and filaments exhibit resistance values that are based on their metallic composition, cross-sectional area and operating temperature at steady state current flow conditions. The resistance of metallic conductors increases at higher temperatures, which allows for a terminal high temperature with power, in watts, with the nickel-chrome wires used in electric stove elements, for example. Knowing the power flow allows a simple calculation of ohms resistance at a given working voltage, or an approximation of temperature based on comparative resistance values if the type of metal forming the wire is known. Define the resistance application. In this example of an electric stove, a nickel-chrome, or nichrome, wire in a large coiled electric stove element is rated for 2400 watts at full operating power when glowing cherry red, which is about 1600 degrees F. The operating voltage of the stove is 230-volts AC, or alternating current. With this information, you can calcula
