Hello everyone;

I am looking for a chart or an equation that will allow me to find the copper thickness needed in relation to current.  I have the chart that is given by IPC but this chart dose not give current ranges or copper thicknesses high enough for my application.  I need to how thick of copper to use for 80 amps and what the minimum trace width that can be used.  If any of you have any information on this I would appreciate it.

Thank you.

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