Scott, I thought those traces were wider. I ran the values through the PCB calculator and it came out to 6.4 A for a 20 degree C rise at 25 degree C room temp. A more reasonable 15 degree C rise gave 5.6A for the 100 mil trace width.
For 10A the trace width would need to be 230 mils and 20A would be 580 mils asuming a 15 degree C rise. Larry K7YBZ > The VN920 is rated at 30 amps. The traces are 100 mils wide, 1 oz > copper, and maybe 1/2 inch long. It's mostly a matter of how much > temperature rise you can tolerate in the traces, so it's going to depend > on the duty cycle. > > Scott
