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Wire Temperature Rise with Current increase

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dave1200

Electrical
Joined
Apr 29, 2003
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Location
US
I'm looking for a guide for expected thermal rise as a function of increasing amperage on 16 ga. multi-strand wire. This is a Automotive application (12.0 -13.5 V).
 
A knuckle-dragger's thermo approach to EE:

I'm sure one can easily obtain the resistance per unit length of the copper wire. The heat power emitted is the power loss = I^2*R. If you have the temperature at one or two states, I'm sure you can calculate the rest. There would be a linear relationship between power and surface temperature when holding other conditions constant.

[bat]Someday, someone may kill you with your own gun, but they should have to beat you to death with it because it is empty.[bat]
 


such data is in a number of electrical handbooks. it is a function of how many wires are in the bundle and the type of insulation, etc. standard electrical stuff.

 
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