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## Main Question or Discussion Point

I'm building an electric furnace using a coiled resistance heating element. The wire is a high temp alloy made for kilns and furnaces (Kanthal A-1 if you care.) Anyway... I can't find a way to calculate how hot the wire will get based on the current load and amount of wire. If the wire is too long then it won't get hot enough and too short and it will melt. The element has to be at least as hot as what I'm melting of course so I need to calculate before I buy the wire. Now I know how to calculate power consumption/dissipation in watts, but not how to translate that into an actual temperature for the wire.

So, what's the relationship between power dissipation and temperature? If a wire 8 feet long is dissipating 6700 watts how hot would it get? I'm sure it's based on the diameter and properties of the wire but I just need the equation!

Thanks,

Alan

So, what's the relationship between power dissipation and temperature? If a wire 8 feet long is dissipating 6700 watts how hot would it get? I'm sure it's based on the diameter and properties of the wire but I just need the equation!

Thanks,

Alan