It depends on what temperature rise you you expect as well as the length of
the trace.
Any PCB trace can handle 30.0 A; however the smaller the trace thickness
the higher the temperature of the trace will be. If the temperature rises
too much, the trace will burn out.
Given that 30.0 A is a fair amount of current to route on a PCB, 16.3 mm
(645 mils) is not unreasonable.
On Fri, Dec 4, 2015 at 10:39 AM, Harini Ranjith <hariniparthiv@xxxxxxxxx>
wrote:
hi Experts,
I need some guidance on how to calculate the trace width for High Voltage
AC line (80-240V) in PCB and maximum current shall go to 30A.
If I use conventional Trace width calculators available in web, it
calculates to very large trace widths 645mills in external layers and
248mills in internal layers with 2oz copper thickness.
Thanks in Advance
Harini
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